# ========
# captured on: Tue Sep 22 14:52:24 2015
# hostname : aphost2
# os release : 2.6.32-358.23.2.el6.x86_64
# perf version : 2.6.32-358.23.2.el6.x86_64.debug
# arch : x86_64
# nrcpus online : 16
# nrcpus avail : 16
# cpudesc : Intel(R) Xeon(R) CPU E5-4650 0 @ 2.70GHz
# cpuid : GenuineIntel,6,45,7
# total memory : 264414484 kB
# cmdline : /usr/bin/perf record -g -p 108443 
# event : name = cycles, type = 0, config = 0x0, config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, excl_host = 0, excl_guest = 1, precise_ip = 0, id = { 5 }
# HEADER_CPU_TOPOLOGY info available, use -I to display
# HEADER_NUMA_TOPOLOGY info available, use -I to display
# ========
#
# Samples: 49K of event 'cycles'
# Event count (approx.): 35553728344
#
# Overhead   Command                  Shared Object                                   Symbol
# ........  ........  .............................  .......................................
#
    15.86%  postgres  postgres                       [.] HeapTupleSatisfiesMVCC             
            |
            --- HeapTupleSatisfiesMVCC

     7.68%  postgres  postgres                       [.] varstr_cmp                         
            |
            --- varstr_cmp

     6.89%  postgres  [kernel.kallsyms]              [k] copy_user_generic_string           
            |
            --- copy_user_generic_string
                file_read_actor
                generic_file_aio_read
                do_sync_read
                vfs_read
                sys_read
                system_call
                __GI___libc_read

     6.76%  postgres  postgres                       [.] bcTruelen                          
            |
            --- bcTruelen

     4.98%  postgres  postgres                       [.] slot_deform_tuple                  
            |
            --- slot_deform_tuple

     4.69%  postgres  postgres                       [.] hash_search_with_hash_value        
            |
            --- hash_search_with_hash_value
               |          
               |--0.04%-- 0x1d5917000000000
                --99.96%-- [...]

     4.67%  postgres  [kernel.kallsyms]              [k] page_fault                         
            |
            --- page_fault
               |          
               |--97.17%-- HeapTupleSatisfiesMVCC
               |          
               |--1.04%-- hash_search_with_hash_value
               |          
               |--0.96%-- LWLockAcquire
               |          
               |--0.57%-- StrategyGetBuffer
                --0.26%-- [...]

     3.98%  postgres  postgres                       [.] heap_getnext                       
            |
            --- heap_getnext

     3.90%  postgres  postgres                       [.] ExecMakeFunctionResultNoSets       
            |
            --- ExecMakeFunctionResultNoSets

     2.72%  postgres  postgres                       [.] slot_getattr                       
            |
            --- slot_getattr

     2.23%  postgres  postgres                       [.] bpcharle                           
            |
            --- bpcharle

     2.04%  postgres  postgres                       [.] ExecScan                           
            |
            --- ExecScan

     1.87%  postgres  [kernel.kallsyms]              [k] find_get_page                      
            |
            --- find_get_page
               |          
               |--87.42%-- find_lock_page
               |          shmem_getpage_gfp
               |          shmem_fault
               |          __do_fault
               |          handle_pte_fault
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          |          
               |          |--97.89%-- HeapTupleSatisfiesMVCC
               |          |          
               |          |--1.24%-- hash_search_with_hash_value
               |           --0.87%-- [...]
               |          
               |--11.50%-- generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
               |--0.76%-- shmem_getpage_gfp
               |          shmem_fault
               |          __do_fault
               |          handle_pte_fault
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          HeapTupleSatisfiesMVCC
                --0.33%-- [...]

     1.75%  postgres  postgres                       [.] heapgetpage                        
            |
            --- heapgetpage

     1.58%  postgres  postgres                       [.] heap_page_prune_opt                
            |
            --- heap_page_prune_opt

     1.29%  postgres  postgres                       [.] LWLockAcquire                      
            |
            --- LWLockAcquire

     1.22%  postgres  [kernel.kallsyms]              [k] radix_tree_lookup_slot             
            |
            --- radix_tree_lookup_slot
               |          
               |--97.18%-- find_get_page
               |          |          
               |          |--80.05%-- find_lock_page
               |          |          shmem_getpage_gfp
               |          |          shmem_fault
               |          |          __do_fault
               |          |          handle_pte_fault
               |          |          handle_mm_fault
               |          |          __do_page_fault
               |          |          do_page_fault
               |          |          page_fault
               |          |          |          
               |          |          |--97.65%-- HeapTupleSatisfiesMVCC
               |          |          |          
               |          |          |--1.28%-- LWLockAcquire
               |          |          |          
               |          |          |--0.86%-- hash_search_with_hash_value
               |          |           --0.21%-- [...]
               |          |          
               |           --19.95%-- generic_file_aio_read
               |                     do_sync_read
               |                     vfs_read
               |                     sys_read
               |                     system_call
               |                     __GI___libc_read
               |          
               |--1.49%-- find_lock_page
               |          shmem_getpage_gfp
               |          shmem_fault
               |          __do_fault
               |          handle_pte_fault
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          HeapTupleSatisfiesMVCC
               |          
                --1.33%-- generic_file_aio_read
                          do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     1.20%  postgres  postgres                       [.] ExecEvalScalarVarFast              
            |
            --- ExecEvalScalarVarFast

     1.18%  postgres  postgres                       [.] ExecQual                           
            |
            --- ExecQual

     1.18%  postgres  [kernel.kallsyms]              [k] mem_cgroup_update_file_mapped      
            |
            --- mem_cgroup_update_file_mapped
               |          
               |--98.80%-- page_add_file_rmap
               |          __do_fault
               |          handle_pte_fault
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          |          
               |          |--99.83%-- HeapTupleSatisfiesMVCC
               |           --0.17%-- [...]
               |          
                --1.20%-- __do_fault
                          handle_pte_fault
                          handle_mm_fault
                          __do_page_fault
                          do_page_fault
                          page_fault
                          HeapTupleSatisfiesMVCC

     1.10%  postgres  postgres                       [.] ExecEvalConst                      
            |
            --- ExecEvalConst

     0.97%  postgres  postgres                       [.] ExecStoreTuple                     
            |
            --- ExecStoreTuple

     0.76%  postgres  [kernel.kallsyms]              [k] handle_mm_fault                    
            |
            --- handle_mm_fault
               |          
               |--97.33%-- __do_page_fault
               |          do_page_fault
               |          page_fault
               |          |          
               |          |--97.75%-- HeapTupleSatisfiesMVCC
               |          |          
               |          |--1.37%-- LWLockAcquire
               |          |          
               |          |--0.60%-- StrategyGetBuffer
               |           --0.27%-- [...]
               |          
                --2.67%-- do_page_fault
                          page_fault
                          HeapTupleSatisfiesMVCC

     0.74%  postgres  [kernel.kallsyms]              [k] __do_fault                         
            |
            --- __do_fault
               |          
               |--97.27%-- handle_pte_fault
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          |          
               |          |--98.60%-- HeapTupleSatisfiesMVCC
               |          |          
               |          |--0.56%-- StrategyGetBuffer
               |           --0.84%-- [...]
               |          
                --2.73%-- handle_mm_fault
                          __do_page_fault
                          do_page_fault
                          page_fault
                          HeapTupleSatisfiesMVCC

     0.72%  postgres  postgres                       [.] LWLockRelease                      
            |
            --- LWLockRelease

     0.69%  postgres  [kernel.kallsyms]              [k] __wake_up_bit                      
            |
            --- __wake_up_bit
               |          
               |--98.83%-- unlock_page
               |          __do_fault
               |          handle_pte_fault
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          |          
               |          |--97.57%-- HeapTupleSatisfiesMVCC
               |          |          
               |          |--1.77%-- LWLockAcquire
               |           --0.66%-- [...]
               |          
                --1.17%-- __do_fault
                          handle_pte_fault
                          handle_mm_fault
                          __do_page_fault
                          do_page_fault
                          page_fault
                          HeapTupleSatisfiesMVCC

     0.68%  postgres  postgres                       [.] SeqNext                            
            |
            --- SeqNext

     0.64%  postgres  postgres                       [.] pg_detoast_datum_packed            
            |
            --- pg_detoast_datum_packed

     0.63%  postgres  postgres                       [.] check_stack_depth                  
            |
            --- check_stack_depth

     0.62%  postgres  [kernel.kallsyms]              [k] shmem_getpage_gfp                  
            |
            --- shmem_getpage_gfp
               |          
               |--99.02%-- shmem_fault
               |          __do_fault
               |          handle_pte_fault
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          |          
               |          |--97.36%-- HeapTupleSatisfiesMVCC
               |          |          
               |          |--0.99%-- LWLockAcquire
               |          |          
               |          |--0.99%-- heap_page_prune_opt
               |          |          
               |           --0.66%-- StrategyGetBuffer
               |          
                --0.98%-- __do_fault
                          handle_pte_fault
                          handle_mm_fault
                          __do_page_fault
                          do_page_fault
                          page_fault
                          HeapTupleSatisfiesMVCC

     0.55%  postgres  [kernel.kallsyms]              [k] find_lock_page                     
            |
            --- find_lock_page
               |          
               |--98.51%-- shmem_getpage_gfp
               |          shmem_fault
               |          __do_fault
               |          handle_pte_fault
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          |          
               |          |--99.62%-- HeapTupleSatisfiesMVCC
               |           --0.38%-- [...]
               |          
                --1.49%-- shmem_fault
                          __do_fault
                          handle_pte_fault
                          handle_mm_fault
                          __do_page_fault
                          do_page_fault
                          page_fault
                          HeapTupleSatisfiesMVCC

     0.54%  postgres  postgres                       [.] CheckForSerializableConflictOut    
            |
            --- CheckForSerializableConflictOut

     0.53%  postgres  postgres                       [.] pgstat_init_function_usage         
            |
            --- pgstat_init_function_usage

     0.49%  postgres  [kernel.kallsyms]              [k] page_waitqueue                     
            |
            --- page_waitqueue
               |          
               |--99.18%-- unlock_page
               |          __do_fault
               |          handle_pte_fault
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          |          
               |          |--97.52%-- HeapTupleSatisfiesMVCC
               |          |          
               |          |--0.83%-- StrategyGetBuffer
               |          |          
               |          |--0.83%-- LWLockAcquire
               |          |          
               |           --0.83%-- hash_search_with_hash_value
               |          
                --0.82%-- __do_fault
                          handle_pte_fault
                          handle_mm_fault
                          __do_page_fault
                          do_page_fault
                          page_fault
                          HeapTupleSatisfiesMVCC

     0.44%  postgres  postgres                       [.] pgstat_end_function_usage          
            |
            --- pgstat_end_function_usage
               |          
               |--2.29%-- add_var
               |          
               |--1.83%-- 0xc23cc00497ac1
               |          
               |--1.38%-- 0xc23d500497ac1
               |          
               |--1.38%-- 0xc23da00497ac1
               |          
               |--1.37%-- 0xc23c900497ac1
               |          
               |--0.92%-- 0xc23df00497ac1
               |          
               |--0.92%-- 0xc23de00497ac1
               |          
               |--0.92%-- 0xc23d300497ac1
               |          
               |--0.92%-- 0xc23ca00497ac1
               |          
               |--0.92%-- 0xc23cb00497ac1
               |          
               |--0.92%-- 0xc23e000497ac1
               |          
               |--0.92%-- 0xc23e500497ac1
               |          
               |--0.92%-- 0xc23e400497ac1
               |          
               |--0.46%-- 0xae3ec00497ac1
               |          
               |--0.46%-- 0x15d1e200497ac1
               |          
               |--0.46%-- 0x14ac8f00497ac1
               |          
               |--0.46%-- 0x11a9d100497ac1
               |          
               |--0.46%-- 0x11fb8e00497ac1
               |          
               |--0.46%-- 0x8965a00497ac1
               |          
               |--0.46%-- 0xa494900497ac1
               |          
               |--0.46%-- 0x5472100497ac1
               |          
               |--0.46%-- 0x3806b00497ac1
               |          
               |--0.46%-- 0xf6ee000497ac1
               |          
               |--0.46%-- 0x4250900497ac1
               |          
               |--0.46%-- 0x324f600497ac1
               |          
               |--0.46%-- 0x1712400497ac1
               |          
               |--0.46%-- 0x5d64600497ac1
               |          
               |--0.46%-- 0xfbfe600497ac1
               |          
               |--0.46%-- 0x9a39a00497ac1
               |          
               |--0.46%-- 0x13fa0d00497ac1
               |          
               |--0.46%-- 0xcd7e00497ac1
               |          
               |--0.46%-- 0x150a4900497ac1
               |          
               |--0.46%-- 0x1e03c00497ac1
               |          
               |--0.46%-- 0x154f2000497ac1
               |          
               |--0.46%-- 0x137b8300497ac1
               |          
               |--0.46%-- 0xbfb4e00497ac1
               |          
               |--0.46%-- 0x998e900497ac1
               |          
               |--0.46%-- 0x3a54200497ac1
               |          
               |--0.46%-- 0x16bacd00497ac1
               |          
               |--0.46%-- 0xeebf700497ac1
               |          
               |--0.46%-- 0xbfe1f00497ac1
               |          
               |--0.46%-- 0x16555e00497ac1
               |          
               |--0.46%-- 0xdf1d00497ac1
               |          
               |--0.46%-- 0xe85a00497ac1
               |          
               |--0.46%-- 0xca30a00497ac1
               |          
               |--0.46%-- 0x61c2f00497ac1
               |          
               |--0.46%-- 0x154ec600497ac1
               |          
               |--0.46%-- 0xc487600497ac1
               |          
               |--0.46%-- 0xff62800497ac1
               |          
               |--0.46%-- 0xe90f00497ac1
               |          
               |--0.46%-- 0x1391e600497ac1
               |          
               |--0.46%-- 0x118ae200497ac1
               |          
               |--0.46%-- 0x61fa00497ac1
               |          
               |--0.46%-- 0xa8b7900497ac1
               |          
               |--0.46%-- 0x3989b00497ac1
               |          
               |--0.46%-- 0x3e96d00497ac1
               |          
               |--0.46%-- 0x6ffd700497ac1
               |          
               |--0.46%-- 0xc711700497ac1
               |          
               |--0.46%-- 0x16d83400497ac1
               |          
               |--0.46%-- 0x9dbc200497ac1
               |          
               |--0.46%-- 0xf574200497ac1
               |          
               |--0.46%-- 0x15fe6200497ac1
               |          
               |--0.46%-- 0x83cad00497ac1
               |          
               |--0.46%-- 0x28c7100497ac1
               |          
               |--0.46%-- 0x11e37700497ac1
               |          
               |--0.46%-- 0x4c92a00497ac1
               |          
               |--0.46%-- 0x7e4d400497ac1
               |          
               |--0.46%-- 0xd5f1a00497ac1
               |          
               |--0.46%-- 0x1e54800497ac1
               |          
               |--0.46%-- 0xe153d00497ac1
               |          
               |--0.46%-- 0x176ae200497ac1
               |          
               |--0.46%-- 0x46aae00497ac1
               |          
               |--0.46%-- 0x176a3500497ac1
               |          
               |--0.46%-- 0x32edd00497ac1
               |          
               |--0.46%-- 0x14def200497ac1
               |          
               |--0.46%-- 0x9df5800497ac1
               |          
               |--0.46%-- 0xbd7d500497ac1
               |          
               |--0.46%-- 0x15571400497ac1
               |          
               |--0.46%-- 0x7f60700497ac1
               |          
               |--0.46%-- 0xd953600497ac1
               |          
               |--0.46%-- 0x6b43a00497ac1
               |          
               |--0.46%-- 0x7073100497ac1
               |          
               |--0.46%-- 0xc23db00497ac1
               |          
               |--0.46%-- 0xc23e100497ac1
               |          
               |--0.46%-- 0xc23e600497ac1
               |          
               |--0.46%-- 0xc23cf00497ac1
               |          
               |--0.46%-- 0xc23e200497ac1
               |          
               |--0.46%-- 0xc23e700497ac1
               |          
               |--0.46%-- 0xc23d100497ac1
               |          
               |--0.46%-- 0xc23d400497ac1
               |          
               |--0.46%-- 0xc23ce00497ac1
               |          
               |--0.46%-- 0xc23d200497ac1
                --48.16%-- [...]

     0.44%  postgres  postgres                       [.] XidInMVCCSnapshot                  
            |
            --- XidInMVCCSnapshot

     0.43%  postgres  postgres                       [.] ReadBuffer_common                  
            |
            --- ReadBuffer_common

     0.40%  postgres  postgres                       [.] PinBuffer                          
            |
            --- PinBuffer

     0.39%  postgres  postgres                       [.] StrategyGetBuffer                  
            |
            --- StrategyGetBuffer

     0.38%  postgres  postgres                       [.] hash_any                           
            |
            --- hash_any

     0.35%  postgres  postgres                       [.] lc_collate_is_c                    
            |
            --- lc_collate_is_c

     0.35%  postgres  [kernel.kallsyms]              [k] __do_page_fault                    
            |
            --- __do_page_fault
               |          
               |--91.91%-- do_page_fault
               |          page_fault
               |          |          
               |          |--93.71%-- HeapTupleSatisfiesMVCC
               |          |          
               |          |--2.51%-- hash_search_with_hash_value
               |          |          
               |          |--1.89%-- LWLockAcquire
               |          |          
               |          |--1.26%-- StrategyGetBuffer
               |          |          
               |           --0.63%-- heap_page_prune_opt
               |          
                --8.09%-- page_fault
                          HeapTupleSatisfiesMVCC

     0.35%  postgres  [kernel.kallsyms]              [k] put_page                           
            |
            --- put_page
               |          
               |--97.11%-- generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
               |--1.73%-- do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --1.16%-- __do_fault
                          handle_pte_fault
                          handle_mm_fault
                          __do_page_fault
                          do_page_fault
                          page_fault
                          StrategyGetBuffer

     0.34%  postgres  [kernel.kallsyms]              [k] shmem_fault                        
            |
            --- shmem_fault
               |          
               |--95.18%-- __do_fault
               |          handle_pte_fault
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          |          
               |          |--95.57%-- HeapTupleSatisfiesMVCC
               |          |          
               |          |--2.53%-- hash_search_with_hash_value
               |          |          
               |          |--1.27%-- LWLockAcquire
               |          |          
               |           --0.63%-- StrategyGetBuffer
               |          
                --4.82%-- handle_pte_fault
                          handle_mm_fault
                          __do_page_fault
                          do_page_fault
                          page_fault
                          HeapTupleSatisfiesMVCC

     0.33%  postgres  postgres                       [.] UnpinBuffer.clone.0                
            |
            --- UnpinBuffer.clone.0

     0.32%  postgres  [kernel.kallsyms]              [k] page_add_file_rmap                 
            |
            --- page_add_file_rmap
               |          
               |--97.44%-- __do_fault
               |          handle_pte_fault
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          HeapTupleSatisfiesMVCC
               |          
                --2.56%-- handle_pte_fault
                          handle_mm_fault
                          __do_page_fault
                          do_page_fault
                          page_fault
                          HeapTupleSatisfiesMVCC

     0.31%  postgres  [kernel.kallsyms]              [k] handle_pte_fault                   
            |
            --- handle_pte_fault
               |          
               |--92.72%-- handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          |          
               |          |--98.57%-- HeapTupleSatisfiesMVCC
               |          |          
               |           --1.43%-- StrategyGetBuffer
               |          
                --7.28%-- __do_page_fault
                          do_page_fault
                          page_fault
                          |          
                          |--90.92%-- HeapTupleSatisfiesMVCC
                          |          
                           --9.08%-- hash_search_with_hash_value

     0.30%  postgres  [kernel.kallsyms]              [k] __inc_zone_state                   
            |
            --- __inc_zone_state
               |          
               |--91.16%-- __inc_zone_page_state
               |          page_add_file_rmap
               |          __do_fault
               |          handle_pte_fault
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          HeapTupleSatisfiesMVCC
               |          
                --8.84%-- page_add_file_rmap
                          __do_fault
                          handle_pte_fault
                          handle_mm_fault
                          __do_page_fault
                          do_page_fault
                          page_fault
                          HeapTupleSatisfiesMVCC

     0.29%  postgres  [kernel.kallsyms]              [k] _spin_lock                         
            |
            --- _spin_lock
               |          
               |--85.32%-- __do_fault
               |          handle_pte_fault
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          HeapTupleSatisfiesMVCC
               |          
               |--4.89%-- do_timer
               |          tick_do_update_jiffies64
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--42.85%-- heap_getnext
               |          |          
               |          |--14.29%-- do_page_fault
               |          |          page_fault
               |          |          HeapTupleSatisfiesMVCC
               |          |          
               |          |--14.29%-- pg_detoast_datum_packed
               |          |          
               |          |--14.29%-- find_lock_page
               |          |          shmem_getpage_gfp
               |          |          shmem_fault
               |          |          __do_fault
               |          |          handle_pte_fault
               |          |          handle_mm_fault
               |          |          __do_page_fault
               |          |          do_page_fault
               |          |          page_fault
               |          |          HeapTupleSatisfiesMVCC
               |          |          
               |           --14.27%-- varstr_cmp
               |          
               |--2.80%-- handle_pte_fault
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          HeapTupleSatisfiesMVCC
               |          
               |--2.80%-- scheduler_tick
               |          update_process_times
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--50.01%-- HeapTupleSatisfiesMVCC
               |          |          
               |          |--25.01%-- heapgetpage
               |          |          
               |           --24.98%-- GetPrivateRefCountEntry
               |          
               |--1.40%-- update_vsyscall
               |          timekeeping_update
               |          do_timer
               |          tick_do_update_jiffies64
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--50.01%-- slot_getattr
               |          |          
               |           --49.99%-- varstr_cmp
               |          
               |--0.70%-- task_rq_lock
               |          try_to_wake_up
               |          default_wake_function
               |          autoremove_wake_function
               |          __wake_up_common
               |          __wake_up
               |          release_sock
               |          udpv6_sendmsg
               |          inet_sendmsg
               |          sock_sendmsg
               |          sys_sendto
               |          system_call
               |          __libc_send
               |          
               |--0.70%-- perf_adjust_freq_unthr_context
               |          perf_event_task_tick
               |          scheduler_tick
               |          update_process_times
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          HeapTupleSatisfiesMVCC
               |          
               |--0.70%-- force_quiescent_state
               |          __rcu_process_callbacks
               |          rcu_process_callbacks
               |          __do_softirq
               |          call_softirq
               |          do_softirq
               |          irq_exit
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          lc_collate_is_c
               |          
                --0.70%-- tick_do_update_jiffies64
                          tick_sched_timer
                          __run_hrtimer
                          hrtimer_interrupt
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          file_read_actor
                          generic_file_aio_read
                          do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.28%  postgres  postgres                       [.] GetPrivateRefCountEntry            
            |
            --- GetPrivateRefCountEntry

     0.27%  postgres  [kernel.kallsyms]              [k] unlock_page                        
            |
            --- unlock_page
               |          
               |--94.81%-- __do_fault
               |          handle_pte_fault
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          |          
               |          |--96.09%-- HeapTupleSatisfiesMVCC
               |          |          
               |          |--2.34%-- LWLockAcquire
               |          |          
               |          |--0.78%-- StrategyGetBuffer
               |          |          
               |           --0.78%-- hash_search_with_hash_value
               |          
                --5.19%-- handle_pte_fault
                          handle_mm_fault
                          __do_page_fault
                          do_page_fault
                          page_fault
                          HeapTupleSatisfiesMVCC

     0.25%  postgres  [kernel.kallsyms]              [k] up_read                            
            |
            --- up_read
               |          
               |--92.80%-- __do_page_fault
               |          do_page_fault
               |          page_fault
               |          |          
               |          |--99.14%-- HeapTupleSatisfiesMVCC
               |          |          
               |           --0.86%-- LWLockAcquire
               |          
                --7.20%-- do_page_fault
                          page_fault
                          HeapTupleSatisfiesMVCC

     0.24%  postgres  [kernel.kallsyms]              [k] find_vma                           
            |
            --- find_vma
               |          
               |--95.00%-- __do_page_fault
               |          do_page_fault
               |          page_fault
               |          |          
               |          |--94.74%-- HeapTupleSatisfiesMVCC
               |          |          
               |          |--1.76%-- StrategyGetBuffer
               |          |          
               |          |--1.75%-- heap_page_prune_opt
               |          |          
               |           --1.75%-- hash_search_with_hash_value
               |          
                --5.00%-- do_page_fault
                          page_fault
                          HeapTupleSatisfiesMVCC

     0.23%  postgres  postgres                       [.] MemoryContextReset                 
            |
            --- MemoryContextReset

     0.23%  postgres  postgres                       [.] bpchareq                           
            |
            --- bpchareq

     0.22%  postgres  postgres                       [.] TransactionIdPrecedes              
            |
            --- TransactionIdPrecedes

     0.18%  postgres  [kernel.kallsyms]              [k] down_read_trylock                  
            |
            --- down_read_trylock
               |          
               |--95.45%-- __do_page_fault
               |          do_page_fault
               |          page_fault
               |          |          
               |          |--94.05%-- HeapTupleSatisfiesMVCC
               |          |          
               |          |--3.57%-- StrategyGetBuffer
               |          |          
               |          |--1.19%-- LWLockAcquire
               |          |          
               |           --1.19%-- hash_search_with_hash_value
               |          
                --4.55%-- do_page_fault
                          page_fault
                          |          
                          |--75.00%-- HeapTupleSatisfiesMVCC
                          |          
                           --25.00%-- LWLockAcquire

     0.17%  postgres  [kernel.kallsyms]              [k] generic_file_aio_read              
            |
            --- generic_file_aio_read
                do_sync_read
                vfs_read
                sys_read
                system_call
                __GI___libc_read

     0.17%  postgres  [kernel.kallsyms]              [k] error_entry                        
            |
            --- error_entry
               |          
               |--96.34%-- HeapTupleSatisfiesMVCC
               |          
               |--2.44%-- hash_search_with_hash_value
               |          
                --1.22%-- LWLockAcquire

     0.16%  postgres  [kernel.kallsyms]              [k] file_read_actor                    
            |
            --- file_read_actor
               |          
               |--96.15%-- generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --3.85%-- do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.15%  postgres  [kernel.kallsyms]              [k] system_call                        
            |
            --- system_call
               |          
               |--96.00%-- __GI___libc_read
               |          
               |--2.67%-- hash_search_with_hash_value
               |          
                --1.33%-- ReadBuffer_common

     0.15%  postgres  postgres                       [.] ResourceOwnerForgetBuffer          
            |
            --- ResourceOwnerForgetBuffer

     0.14%  postgres  [kernel.kallsyms]              [k] __audit_syscall_exit               
            |
            --- __audit_syscall_exit
               |          
               |--97.14%-- sysret_audit
               |          __GI___libc_read
               |          
                --2.86%-- __GI___libc_read

     0.14%  postgres  [kernel.kallsyms]              [k] do_page_fault                      
            |
            --- do_page_fault
               |          
               |--86.77%-- page_fault
               |          |          
               |          |--96.61%-- HeapTupleSatisfiesMVCC
               |          |          
               |          |--1.69%-- heap_page_prune_opt
               |          |          
               |           --1.69%-- hash_search_with_hash_value
               |          
                --13.23%-- HeapTupleSatisfiesMVCC

     0.13%  postgres  [kernel.kallsyms]              [k] vfs_read                           
            |
            --- vfs_read
                sys_read
                system_call
                __GI___libc_read

     0.13%  postgres  [kernel.kallsyms]              [k] native_set_pte_at                  
            |
            --- native_set_pte_at
               |          
               |--85.71%-- __do_fault
               |          handle_pte_fault
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          |          
               |          |--98.15%-- HeapTupleSatisfiesMVCC
               |          |          
               |           --1.85%-- LWLockAcquire
               |          
                --14.29%-- handle_pte_fault
                          handle_mm_fault
                          __do_page_fault
                          do_page_fault
                          page_fault
                          HeapTupleSatisfiesMVCC

     0.12%  postgres  [kernel.kallsyms]              [k] sys_read                           
            |
            --- sys_read
               |          
               |--89.83%-- system_call
               |          __GI___libc_read
               |          
                --10.17%-- __GI___libc_read

     0.11%  postgres  libc-2.12.so                   [.] memcpy                             
            |
            --- memcpy

     0.11%  postgres  postgres                       [.] ReadBufferExtended                 
            |
            --- ReadBufferExtended

     0.10%  postgres  [kernel.kallsyms]              [k] lookup_page_cgroup                 
            |
            --- lookup_page_cgroup
               |          
               |--90.20%-- mem_cgroup_update_file_mapped
               |          page_add_file_rmap
               |          __do_fault
               |          handle_pte_fault
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          HeapTupleSatisfiesMVCC
               |          
                --9.80%-- page_add_file_rmap
                          __do_fault
                          handle_pte_fault
                          handle_mm_fault
                          __do_page_fault
                          do_page_fault
                          page_fault
                          HeapTupleSatisfiesMVCC

     0.10%  postgres  postgres                       [.] LockBuffer                         
            |
            --- LockBuffer

     0.10%  postgres  [kernel.kallsyms]              [k] touch_atime                        
            |
            --- touch_atime
               |          
               |--93.75%-- generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --6.25%-- do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.09%  postgres  [kernel.kallsyms]              [k] _cond_resched                      
            |
            --- _cond_resched
               |          
               |--46.68%-- find_lock_page
               |          shmem_getpage_gfp
               |          shmem_fault
               |          __do_fault
               |          handle_pte_fault
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          HeapTupleSatisfiesMVCC
               |          
               |--20.01%-- __do_page_fault
               |          do_page_fault
               |          page_fault
               |          HeapTupleSatisfiesMVCC
               |          
               |--19.98%-- generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
               |--8.88%-- do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
               |--2.22%-- alloc_pages_current
               |          pte_alloc_one
               |          __pte_alloc
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          HeapTupleSatisfiesMVCC
               |          
                --2.22%-- do_page_fault
                          page_fault
                          HeapTupleSatisfiesMVCC

     0.09%  postgres  [kernel.kallsyms]              [k] rw_verify_area                     
            |
            --- rw_verify_area
               |          
               |--95.24%-- vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --4.76%-- sys_read
                          system_call
                          __GI___libc_read

     0.08%  postgres  postgres                       [.] TerminateBufferIO                  
            |
            --- TerminateBufferIO

     0.08%  postgres  postgres                       [.] FileRead                           
            |
            --- FileRead

     0.08%  postgres  libc-2.12.so                   [.] __GI___libc_read                   
            |
            --- __GI___libc_read

     0.08%  postgres  [kernel.kallsyms]              [k] audit_syscall_entry                
            |
            --- audit_syscall_entry
               |          
               |--97.44%-- auditsys
               |          __GI___libc_read
               |          
                --2.56%-- __GI___libc_read

     0.07%  postgres  postgres                       [.] ss_report_location                 
            |
            --- ss_report_location

     0.06%  postgres  postgres                       [.] ReleaseBuffer                      
            |
            --- ReleaseBuffer

     0.06%  postgres  libc-2.12.so                   [.] __memcmp_sse4_1                    
            |
            --- __memcmp_sse4_1

     0.06%  postgres  postgres                       [.] do_numeric_accum                   
            |
            --- do_numeric_accum
               |          
               |--93.33%-- 0x0
                --6.67%-- [...]

     0.06%  postgres  [kernel.kallsyms]              [k] fget_light                         
            |
            --- fget_light
                sys_read
                system_call
                __GI___libc_read

     0.06%  postgres  postgres                       [.] ResourceOwnerEnlargeBuffers        
            |
            --- ResourceOwnerEnlargeBuffers

     0.06%  postgres  postgres                       [.] ExecProject                        
            |
            --- ExecProject

     0.06%  postgres  postgres                       [.] StartBufferIO                      
            |
            --- StartBufferIO

     0.05%  postgres  [kernel.kallsyms]              [k] __inc_zone_page_state              
            |
            --- __inc_zone_page_state
               |          
               |--85.18%-- page_add_file_rmap
               |          __do_fault
               |          handle_pte_fault
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          HeapTupleSatisfiesMVCC
               |          
                --14.82%-- __do_fault
                          handle_pte_fault
                          handle_mm_fault
                          __do_page_fault
                          do_page_fault
                          page_fault
                          HeapTupleSatisfiesMVCC

     0.05%  postgres  postgres                       [.] BufTableLookup                     
            |
            --- BufTableLookup

     0.05%  postgres  postgres                       [.] advance_aggregates                 
            |
            --- advance_aggregates

     0.05%  postgres  [kernel.kallsyms].vsyscall_fn  [.] vread_tsc                          
            |
            --- vread_tsc
               |          
               |--95.83%-- 0x7fff59744814
               |          0x7fff597448bc
               |          __gettimeofday
               |          
                --4.17%-- 0x7fff597448bc
                          __gettimeofday

     0.05%  postgres  [kernel.kallsyms]              [k] generic_segment_checks             
            |
            --- generic_segment_checks
               |          
               |--79.16%-- generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --20.84%-- do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.05%  postgres  [kernel.kallsyms]              [k] clear_page_c                       
            |
            --- clear_page_c
                __alloc_pages_nodemask
                alloc_pages_current
                pte_alloc_one
                __pte_alloc
                handle_mm_fault
                __do_page_fault
                do_page_fault
                page_fault
                HeapTupleSatisfiesMVCC

     0.05%  postgres  postgres                       [.] DataChecksumsEnabled               
            |
            --- DataChecksumsEnabled

     0.04%  postgres  postgres                       [.] ResourceOwnerRememberBuffer        
            |
            --- ResourceOwnerRememberBuffer

     0.04%  postgres  postgres                       [.] add_abs                            
            |
            --- add_abs

     0.04%  postgres  [kernel.kallsyms]              [k] kfree                              
            |
            --- kfree
               |          
               |--76.19%-- __audit_syscall_exit
               |          sysret_audit
               |          __GI___libc_read
               |          
                --23.81%-- sysret_audit
                          __GI___libc_read

     0.04%  postgres  postgres                       [.] FileSeek                           
            |
            --- FileSeek

     0.04%  postgres  [kernel.kallsyms]              [k] retint_swapgs                      
            |
            --- retint_swapgs
                HeapTupleSatisfiesMVCC

     0.04%  postgres  postgres                       [.] AllocSetAlloc                      
            |
            --- AllocSetAlloc

     0.04%  postgres  postgres                       [.] PageIsVerified                     
            |
            --- PageIsVerified

     0.04%  postgres  [kernel.kallsyms]              [k] error_exit                         
            |
            --- error_exit
               |          
               |--94.44%-- HeapTupleSatisfiesMVCC
               |          
                --5.56%-- heap_page_prune_opt

     0.04%  postgres  [kernel.kallsyms]              [k] sysret_check                       
            |
            --- sysret_check
                __GI___libc_read

     0.03%  postgres  postgres                       [.] IncrBufferRefCount                 
            |
            --- IncrBufferRefCount

     0.03%  postgres  postgres                       [.] advance_transition_function        
            |
            --- advance_transition_function

     0.03%  postgres  postgres                       [.] get_hash_value                     
            |
            --- get_hash_value

     0.03%  postgres  postgres                       [.] IsCatalogClass                     
            |
            --- IsCatalogClass

     0.03%  postgres  postgres                       [.] LWLockConditionalAcquire           
            |
            --- LWLockConditionalAcquire

     0.03%  postgres  [kernel.kallsyms]              [k] inotify_inode_queue_event          
            |
            --- inotify_inode_queue_event
               |          
               |--73.34%-- vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --26.66%-- sys_read
                          system_call
                          __GI___libc_read

     0.03%  postgres  [kernel.kallsyms]              [k] fsnotify                           
            |
            --- fsnotify
               |          
               |--80.01%-- vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --19.99%-- sys_read
                          system_call
                          __GI___libc_read

     0.03%  postgres  postgres                       [.] ExecClearTuple                     
            |
            --- ExecClearTuple

     0.03%  postgres  postgres                       [.] make_result                        
            |
            --- make_result

     0.03%  postgres  [kernel.kallsyms]              [k] do_sync_read                       
            |
            --- do_sync_read
               |          
               |--92.86%-- vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --7.14%-- sys_read
                          system_call
                          __GI___libc_read

     0.03%  postgres  postgres                       [.] fetch_input_tuple                  
            |
            --- fetch_input_tuple

     0.03%  postgres  [kernel.kallsyms]              [k] unroll_tree_refs                   
            |
            --- unroll_tree_refs
               |          
               |--53.84%-- __audit_syscall_exit
               |          sysret_audit
               |          __GI___libc_read
               |          
                --46.16%-- sysret_audit
                          __GI___libc_read

     0.02%  postgres  [kernel.kallsyms]              [k] restore_args                       
            |
            --- restore_args
               |          
               |--91.68%-- HeapTupleSatisfiesMVCC
               |          
                --8.32%-- hash_search_with_hash_value

     0.02%  postgres  [kernel.kallsyms]              [k] apic_timer_interrupt               
            |
            --- apic_timer_interrupt
               |          
               |--25.01%-- HeapTupleSatisfiesMVCC
               |          
               |--25.00%-- varstr_cmp
               |          
               |--24.98%-- file_read_actor
               |          generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
               |--8.34%-- heap_page_prune_opt
               |          
               |--8.34%-- ReadBufferExtended
               |          
                --8.34%-- shmem_getpage_gfp
                          shmem_fault
                          __do_fault
                          handle_pte_fault
                          handle_mm_fault
                          __do_page_fault
                          do_page_fault
                          page_fault
                          HeapTupleSatisfiesMVCC

     0.02%  postgres  [vdso]                         [.] 0x00007fff5974481f                 
            |          
            |--16.68%-- 0x7fff597448a4
            |          __gettimeofday
            |          
            |--16.66%-- 0x7fff59744826
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--16.66%-- 0x7fff5974481f
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--8.34%-- 0x7fff59744803
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--8.34%-- 0x7fff597448d8
            |          __gettimeofday
            |          
            |--8.34%-- 0x7fff59744830
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--8.33%-- 0x7fff597448c0
            |          __gettimeofday
            |          
            |--8.33%-- 0x7fff597448b0
            |          __gettimeofday
            |          
             --8.33%-- 0x7fff597448d4
                       __gettimeofday

     0.02%  postgres  postgres                       [.] int4_sum                           
            |
            --- int4_sum

     0.02%  postgres  [kernel.kallsyms]              [k] _spin_lock_irqsave                 
            |
            --- _spin_lock_irqsave
               |          
               |--63.63%-- ntp_tick_length
               |          do_timer
               |          tick_do_update_jiffies64
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--28.55%-- file_read_actor
               |          |          generic_file_aio_read
               |          |          do_sync_read
               |          |          vfs_read
               |          |          sys_read
               |          |          system_call
               |          |          __GI___libc_read
               |          |          
               |          |--14.29%-- do_page_fault
               |          |          page_fault
               |          |          HeapTupleSatisfiesMVCC
               |          |          
               |          |--14.29%-- heap_getnext
               |          |          
               |          |--14.29%-- bcTruelen
               |          |          
               |          |--14.29%-- HeapTupleSatisfiesMVCC
               |          |          
               |           --14.28%-- XidInMVCCSnapshot
               |          
               |--18.18%-- rcu_process_dyntick
               |          force_quiescent_state
               |          __rcu_process_callbacks
               |          rcu_process_callbacks
               |          __do_softirq
               |          call_softirq
               |          do_softirq
               |          irq_exit
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--50.03%-- varstr_cmp
               |          |          
               |           --49.97%-- file_read_actor
               |                     generic_file_aio_read
               |                     do_sync_read
               |                     vfs_read
               |                     sys_read
               |                     system_call
               |                     __GI___libc_read
               |          
               |--9.10%-- do_timer
               |          tick_do_update_jiffies64
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          ExecScan
               |          
                --9.09%-- __rcu_process_callbacks
                          rcu_process_callbacks
                          __do_softirq
                          call_softirq
                          do_softirq
                          irq_exit
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          bpcharle

     0.02%  postgres  postgres                       [.] ExecStoreMinimalTuple              
            |
            --- ExecStoreMinimalTuple

     0.02%  postgres  postgres                       [.] mdread                             
            |
            --- mdread

     0.02%  postgres  postgres                       [.] IsToastNamespace                   
            |
            --- IsToastNamespace

     0.02%  postgres  postgres                       [.] ReservePrivateRefCountEntry        
            |
            --- ReservePrivateRefCountEntry

     0.02%  postgres  postgres                       [.] isTempToastNamespace               
            |
            --- isTempToastNamespace

     0.02%  postgres  [kernel.kallsyms]              [k] __alloc_pages_nodemask             
            |
            --- __alloc_pages_nodemask
                alloc_pages_current
                pte_alloc_one
                __pte_alloc
                handle_mm_fault
                __do_page_fault
                do_page_fault
                page_fault
                HeapTupleSatisfiesMVCC

     0.02%  postgres  [kernel.kallsyms]              [k] trace_clock_local                  
            |
            --- trace_clock_local
               |          
               |--77.78%-- rb_reserve_next_event
               |          ring_buffer_lock_reserve
               |          trace_buffer_lock_reserve
               |          trace_current_buffer_lock_reserve
               |          |          
               |          |--85.71%-- ftrace_raw_event_id_softirq
               |          |          |          
               |          |          |--50.01%-- ftrace_raw_event_softirq_raise
               |          |          |          raise_softirq
               |          |          |          rcu_check_callbacks
               |          |          |          update_process_times
               |          |          |          tick_sched_timer
               |          |          |          __run_hrtimer
               |          |          |          hrtimer_interrupt
               |          |          |          smp_apic_timer_interrupt
               |          |          |          apic_timer_interrupt
               |          |          |          |          
               |          |          |          |--33.34%-- shmem_fault
               |          |          |          |          __do_fault
               |          |          |          |          handle_pte_fault
               |          |          |          |          handle_mm_fault
               |          |          |          |          __do_page_fault
               |          |          |          |          do_page_fault
               |          |          |          |          page_fault
               |          |          |          |          HeapTupleSatisfiesMVCC
               |          |          |          |          
               |          |          |          |--33.34%-- bcTruelen
               |          |          |          |          
               |          |          |           --33.33%-- slot_getattr
               |          |          |          
               |          |          |--33.35%-- ftrace_raw_event_softirq_exit
               |          |          |          __do_softirq
               |          |          |          call_softirq
               |          |          |          do_softirq
               |          |          |          irq_exit
               |          |          |          smp_apic_timer_interrupt
               |          |          |          apic_timer_interrupt
               |          |          |          |          
               |          |          |          |--50.01%-- bcTruelen
               |          |          |          |          
               |          |          |           --49.99%-- HeapTupleSatisfiesMVCC
               |          |          |          
               |          |           --16.64%-- ftrace_raw_event_softirq_entry
               |          |                     __do_softirq
               |          |                     call_softirq
               |          |                     do_softirq
               |          |                     irq_exit
               |          |                     smp_apic_timer_interrupt
               |          |                     apic_timer_interrupt
               |          |                     ExecEvalScalarVarFast
               |          |          
               |           --14.29%-- ftrace_raw_event_sched_stat_runtime
               |                     update_curr
               |                     task_tick_fair
               |                     scheduler_tick
               |                     update_process_times
               |                     tick_sched_timer
               |                     __run_hrtimer
               |                     hrtimer_interrupt
               |                     smp_apic_timer_interrupt
               |                     apic_timer_interrupt
               |                     PinBuffer
               |          
                --22.22%-- ring_buffer_lock_reserve
                          trace_buffer_lock_reserve
                          trace_current_buffer_lock_reserve
                          |          
                          |--50.01%-- ftrace_raw_event_sched_stat_runtime
                          |          update_curr
                          |          task_tick_fair
                          |          scheduler_tick
                          |          update_process_times
                          |          tick_sched_timer
                          |          __run_hrtimer
                          |          hrtimer_interrupt
                          |          smp_apic_timer_interrupt
                          |          apic_timer_interrupt
                          |          do_page_fault
                          |          page_fault
                          |          HeapTupleSatisfiesMVCC
                          |          
                           --49.99%-- ftrace_raw_event_id_softirq
                                     ftrace_raw_event_softirq_exit
                                     __do_softirq
                                     call_softirq
                                     do_softirq
                                     irq_exit
                                     smp_apic_timer_interrupt
                                     apic_timer_interrupt
                                     slot_getattr

     0.02%  postgres  postgres                       [.] int64_to_numericvar                
            |
            --- int64_to_numericvar

     0.02%  postgres  postgres                       [.] ExecAgg                            
            |
            --- ExecAgg

     0.02%  postgres  libc-2.12.so                   [.] __gettimeofday                     
            |
            --- __gettimeofday

     0.02%  postgres  [kernel.kallsyms]              [k] rcu_process_callbacks              
            |
            --- rcu_process_callbacks
               |          
               |--55.55%-- __do_softirq
               |          call_softirq
               |          do_softirq
               |          irq_exit
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--20.02%-- do_page_fault
               |          |          page_fault
               |          |          HeapTupleSatisfiesMVCC
               |          |          
               |          |--20.02%-- __do_page_fault
               |          |          do_page_fault
               |          |          page_fault
               |          |          HeapTupleSatisfiesMVCC
               |          |          
               |          |--20.00%-- file_read_actor
               |          |          generic_file_aio_read
               |          |          do_sync_read
               |          |          vfs_read
               |          |          sys_read
               |          |          system_call
               |          |          __GI___libc_read
               |          |          
               |          |--19.99%-- generic_file_aio_read
               |          |          do_sync_read
               |          |          vfs_read
               |          |          sys_read
               |          |          system_call
               |          |          __GI___libc_read
               |          |          
               |           --19.98%-- bcTruelen
               |          
                --44.45%-- call_softirq
                          do_softirq
                          irq_exit
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          |          
                          |--50.03%-- bcTruelen
                          |          
                          |--24.98%-- file_read_actor
                          |          generic_file_aio_read
                          |          do_sync_read
                          |          vfs_read
                          |          sys_read
                          |          system_call
                          |          __GI___libc_read
                          |          
                           --24.98%-- HeapTupleSatisfiesMVCC

     0.02%  postgres  postgres                       [.] _mdfd_getseg                       
            |
            --- _mdfd_getseg

     0.02%  postgres  [kernel.kallsyms]              [k] mark_page_accessed                 
            |
            --- mark_page_accessed
               |          
               |--88.89%-- generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --11.11%-- do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.02%  postgres  [kernel.kallsyms]              [k] native_read_tsc                    
            |
            --- native_read_tsc
               |          
               |--62.50%-- native_sched_clock
               |          sched_clock
               |          trace_clock_local
               |          rb_reserve_next_event
               |          ring_buffer_lock_reserve
               |          trace_buffer_lock_reserve
               |          trace_current_buffer_lock_reserve
               |          ftrace_raw_event_id_softirq
               |          |          
               |          |--60.00%-- ftrace_raw_event_softirq_exit
               |          |          __do_softirq
               |          |          call_softirq
               |          |          do_softirq
               |          |          irq_exit
               |          |          smp_apic_timer_interrupt
               |          |          apic_timer_interrupt
               |          |          |          
               |          |          |--33.34%-- do_page_fault
               |          |          |          page_fault
               |          |          |          HeapTupleSatisfiesMVCC
               |          |          |          
               |          |          |--33.33%-- bcTruelen
               |          |          |          
               |          |           --33.33%-- bpcharle
               |          |          
               |           --40.00%-- ftrace_raw_event_softirq_entry
               |                     __do_softirq
               |                     call_softirq
               |                     do_softirq
               |                     irq_exit
               |                     smp_apic_timer_interrupt
               |                     apic_timer_interrupt
               |                     |          
               |                     |--50.02%-- find_get_page
               |                     |          find_lock_page
               |                     |          shmem_getpage_gfp
               |                     |          shmem_fault
               |                     |          __do_fault
               |                     |          handle_pte_fault
               |                     |          handle_mm_fault
               |                     |          __do_page_fault
               |                     |          do_page_fault
               |                     |          page_fault
               |                     |          HeapTupleSatisfiesMVCC
               |                     |          
               |                      --49.98%-- HeapTupleSatisfiesMVCC
               |          
                --37.50%-- read_tsc
                          |          
                          |--66.65%-- ktime_get
                          |          |          
                          |          |--50.03%-- tick_sched_timer
                          |          |          __run_hrtimer
                          |          |          hrtimer_interrupt
                          |          |          smp_apic_timer_interrupt
                          |          |          apic_timer_interrupt
                          |          |          ExecScan
                          |          |          
                          |           --49.97%-- tick_dev_program_event
                          |                     tick_program_event
                          |                     hrtimer_interrupt
                          |                     smp_apic_timer_interrupt
                          |                     apic_timer_interrupt
                          |                     LWLockAcquire
                          |          
                           --33.35%-- do_timer
                                     tick_do_update_jiffies64
                                     tick_sched_timer
                                     __run_hrtimer
                                     hrtimer_interrupt
                                     smp_apic_timer_interrupt
                                     apic_timer_interrupt
                                     page_add_file_rmap
                                     __do_fault
                                     handle_pte_fault
                                     handle_mm_fault
                                     __do_page_fault
                                     do_page_fault
                                     page_fault
                                     HeapTupleSatisfiesMVCC

     0.02%  postgres  [kernel.kallsyms]              [k] __rcu_process_callbacks            
            |
            --- __rcu_process_callbacks
                rcu_process_callbacks
                __do_softirq
                call_softirq
                do_softirq
                irq_exit
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--25.00%-- do_page_fault
               |          page_fault
               |          HeapTupleSatisfiesMVCC
               |          
               |--12.51%-- HeapTupleSatisfiesMVCC
               |          
               |--12.51%-- unlock_page
               |          __do_fault
               |          handle_pte_fault
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          HeapTupleSatisfiesMVCC
               |          
               |--12.50%-- ExecMakeFunctionResultNoSets
               |          
               |--12.50%-- shmem_getpage_gfp
               |          shmem_fault
               |          __do_fault
               |          handle_pte_fault
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          HeapTupleSatisfiesMVCC
               |          
               |--12.49%-- TransactionIdPrecedes
               |          
                --12.49%-- file_read_actor
                          generic_file_aio_read
                          do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.02%  postgres  postgres                       [.] slot_getsomeattrs                  
            |
            --- slot_getsomeattrs

     0.02%  postgres  postgres                       [.] tag_hash                           
            |
            --- tag_hash

     0.02%  postgres  [kernel.kallsyms]              [k] auditsys                           
            |
            --- auditsys
                __GI___libc_read

     0.02%  postgres  postgres                       [.] mdopen                             
            |
            --- mdopen

     0.01%  postgres  [kernel.kallsyms]              [k] account_user_time                  
            |
            --- account_user_time
               |          
               |--71.45%-- account_process_tick
               |          update_process_times
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--40.00%-- hash_search_with_hash_value
               |          |          
               |          |--40.00%-- HeapTupleSatisfiesMVCC
               |          |          
               |           --20.00%-- slot_getattr
               |          
                --28.55%-- update_process_times
                          tick_sched_timer
                          __run_hrtimer
                          hrtimer_interrupt
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          |          
                          |--50.03%-- HeapTupleSatisfiesMVCC
                          |          
                           --49.97%-- do_numeric_accum

     0.01%  postgres  [kernel.kallsyms]              [k] rb_reserve_next_event              
            |
            --- rb_reserve_next_event
                ring_buffer_lock_reserve
                trace_buffer_lock_reserve
                trace_current_buffer_lock_reserve
               |          
               |--85.71%-- ftrace_raw_event_id_softirq
               |          |          
               |          |--50.00%-- ftrace_raw_event_softirq_exit
               |          |          __do_softirq
               |          |          call_softirq
               |          |          do_softirq
               |          |          irq_exit
               |          |          smp_apic_timer_interrupt
               |          |          apic_timer_interrupt
               |          |          |          
               |          |          |--33.35%-- HeapTupleSatisfiesMVCC
               |          |          |          
               |          |          |--33.33%-- ExecMakeFunctionResultNoSets
               |          |          |          
               |          |           --33.32%-- heap_getnext
               |          |          
               |          |--33.33%-- ftrace_raw_event_softirq_entry
               |          |          __do_softirq
               |          |          call_softirq
               |          |          do_softirq
               |          |          irq_exit
               |          |          smp_apic_timer_interrupt
               |          |          apic_timer_interrupt
               |          |          |          
               |          |          |--50.01%-- do_page_fault
               |          |          |          page_fault
               |          |          |          HeapTupleSatisfiesMVCC
               |          |          |          
               |          |           --49.99%-- CheckForSerializableConflictOut
               |          |          
               |           --16.67%-- ftrace_raw_event_softirq_raise
               |                     raise_softirq
               |                     run_local_timers
               |                     update_process_times
               |                     tick_sched_timer
               |                     __run_hrtimer
               |                     hrtimer_interrupt
               |                     smp_apic_timer_interrupt
               |                     apic_timer_interrupt
               |                     bpcharle
               |          
                --14.29%-- ftrace_raw_event_sched_stat_runtime
                          update_curr
                          task_tick_fair
                          scheduler_tick
                          update_process_times
                          tick_sched_timer
                          __run_hrtimer
                          hrtimer_interrupt
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          HeapTupleSatisfiesMVCC

     0.01%  postgres  [kernel.kallsyms]              [k] native_write_msr_safe              
            |
            --- native_write_msr_safe
               |          
               |--71.42%-- intel_pmu_disable_all
               |          x86_pmu_disable
               |          perf_pmu_disable
               |          perf_adjust_freq_unthr_context
               |          perf_event_task_tick
               |          scheduler_tick
               |          update_process_times
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--39.98%-- bcTruelen
               |          |          
               |          |--20.01%-- HeapTupleSatisfiesMVCC
               |          |          
               |          |--20.01%-- page_add_file_rmap
               |          |          __do_fault
               |          |          handle_pte_fault
               |          |          handle_mm_fault
               |          |          __do_page_fault
               |          |          do_page_fault
               |          |          page_fault
               |          |          HeapTupleSatisfiesMVCC
               |          |          
               |           --20.00%-- ExecMakeFunctionResultNoSets
               |          
                --28.58%-- intel_pmu_enable_all
                          x86_pmu_enable
                          perf_pmu_enable
                          |          
                          |--99.94%-- perf_adjust_freq_unthr_context
                          |          perf_event_task_tick
                          |          scheduler_tick
                          |          update_process_times
                          |          tick_sched_timer
                          |          __run_hrtimer
                          |          hrtimer_interrupt
                          |          smp_apic_timer_interrupt
                          |          apic_timer_interrupt
                          |          |          
                          |          |--50.02%-- HeapTupleSatisfiesMVCC
                          |          |          
                          |           --49.98%-- ExecMakeFunctionResultNoSets
                           --0.06%-- [...]

     0.01%  postgres  [kernel.kallsyms]              [k] rcu_process_gp_end                 
            |
            --- rcu_process_gp_end
               |          
               |--57.13%-- __rcu_process_callbacks
               |          rcu_process_callbacks
               |          __do_softirq
               |          call_softirq
               |          do_softirq
               |          irq_exit
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--50.01%-- HeapTupleSatisfiesMVCC
               |          |          
               |          |--25.03%-- varstr_cmp
               |          |          
               |           --24.97%-- ExecScan
               |          
                --42.87%-- rcu_process_callbacks
                          __do_softirq
                          call_softirq
                          do_softirq
                          irq_exit
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          |          
                          |--33.35%-- varstr_cmp
                          |          
                          |--33.33%-- bcTruelen
                          |          
                           --33.31%-- HeapTupleSatisfiesMVCC

     0.01%  postgres  [kernel.kallsyms]              [k] __do_softirq                       
            |
            --- __do_softirq
               |          
               |--85.72%-- call_softirq
               |          do_softirq
               |          irq_exit
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--33.31%-- file_read_actor
               |          |          generic_file_aio_read
               |          |          do_sync_read
               |          |          vfs_read
               |          |          sys_read
               |          |          system_call
               |          |          __GI___libc_read
               |          |          
               |          |--16.68%-- hash_search_with_hash_value
               |          |          
               |          |--16.67%-- varstr_cmp
               |          |          
               |          |--16.67%-- ExecMakeFunctionResultNoSets
               |          |          
               |           --16.67%-- AllocSetFree
               |          
                --14.28%-- do_softirq
                          irq_exit
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          slot_deform_tuple

     0.01%  postgres  [kernel.kallsyms]              [k] scheduler_tick                     
            |
            --- scheduler_tick
               |          
               |--85.70%-- update_process_times
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--33.32%-- file_read_actor
               |          |          generic_file_aio_read
               |          |          do_sync_read
               |          |          vfs_read
               |          |          sys_read
               |          |          system_call
               |          |          __GI___libc_read
               |          |          
               |          |--16.68%-- ExecScan
               |          |          
               |          |--16.68%-- page_add_file_rmap
               |          |          __do_fault
               |          |          handle_pte_fault
               |          |          handle_mm_fault
               |          |          __do_page_fault
               |          |          do_page_fault
               |          |          page_fault
               |          |          HeapTupleSatisfiesMVCC
               |          |          
               |          |--16.66%-- memcpy
               |          |          
               |           --16.66%-- ExecStoreTuple
               |          
                --14.30%-- tick_sched_timer
                          __run_hrtimer
                          hrtimer_interrupt
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          do_page_fault
                          page_fault
                          HeapTupleSatisfiesMVCC

     0.01%  postgres  postgres                       [.] init_var_from_num                  
            |
            --- init_var_from_num
               |          
               |--57.18%-- 0x0
               |          
                --42.82%-- slot_getsomeattrs

     0.01%  postgres  [kernel.kallsyms]              [k] mcount                             
            |
            --- mcount
                page_fault
                HeapTupleSatisfiesMVCC

     0.01%  postgres  postgres                       [.] TupleHashTableHash                 
            |
            --- TupleHashTableHash
               |          
               |--16.68%-- 0x1d72000
                --83.32%-- [...]

     0.01%  postgres  [kernel.kallsyms]              [k] task_tick_fair                     
            |
            --- task_tick_fair
               |          
               |--66.68%-- scheduler_tick
               |          update_process_times
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--25.01%-- varstr_cmp
               |          |          
               |          |--25.00%-- bcTruelen
               |          |          
               |          |--25.00%-- HeapTupleSatisfiesMVCC
               |          |          
               |           --24.99%-- heap_page_prune_opt
               |          
                --33.32%-- update_process_times
                          tick_sched_timer
                          __run_hrtimer
                          hrtimer_interrupt
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          |          
                          |--50.00%-- bpcharle
                          |          
                           --50.00%-- file_read_actor
                                     generic_file_aio_read
                                     do_sync_read
                                     vfs_read
                                     sys_read
                                     system_call
                                     __GI___libc_read

     0.01%  postgres  [kernel.kallsyms]              [k] ring_buffer_lock_reserve           
            |
            --- ring_buffer_lock_reserve
               |          
               |--83.33%-- trace_buffer_lock_reserve
               |          trace_current_buffer_lock_reserve
               |          ftrace_raw_event_id_softirq
               |          |          
               |          |--79.99%-- ftrace_raw_event_softirq_raise
               |          |          |          
               |          |          |--75.03%-- raise_softirq
               |          |          |          |          
               |          |          |          |--66.65%-- run_local_timers
               |          |          |          |          update_process_times
               |          |          |          |          tick_sched_timer
               |          |          |          |          __run_hrtimer
               |          |          |          |          hrtimer_interrupt
               |          |          |          |          smp_apic_timer_interrupt
               |          |          |          |          apic_timer_interrupt
               |          |          |          |          |          
               |          |          |          |          |--50.03%-- heap_getnext
               |          |          |          |          |          
               |          |          |          |           --49.97%-- ExecQual
               |          |          |          |          
               |          |          |           --33.35%-- rcu_check_callbacks
               |          |          |                     update_process_times
               |          |          |                     tick_sched_timer
               |          |          |                     __run_hrtimer
               |          |          |                     hrtimer_interrupt
               |          |          |                     smp_apic_timer_interrupt
               |          |          |                     apic_timer_interrupt
               |          |          |                     bcTruelen
               |          |          |          
               |          |           --24.97%-- enqueue_to_backlog
               |          |                     netif_rx
               |          |                     0xffffffffa05a1097
               |          |                     __netif_receive_skb
               |          |                     netif_receive_skb
               |          |                     napi_skb_finish
               |          |                     napi_gro_receive
               |          |                     igb_poll
               |          |                     net_rx_action
               |          |                     __do_softirq
               |          |                     call_softirq
               |          |                     do_softirq
               |          |                     irq_exit
               |          |                     do_IRQ
               |          |                     ret_from_intr
               |          |                     file_read_actor
               |          |                     generic_file_aio_read
               |          |                     do_sync_read
               |          |                     vfs_read
               |          |                     sys_read
               |          |                     system_call
               |          |                     __GI___libc_read
               |          |          
               |           --20.01%-- ftrace_raw_event_softirq_entry
               |                     __do_softirq
               |                     call_softirq
               |                     do_softirq
               |                     irq_exit
               |                     smp_apic_timer_interrupt
               |                     apic_timer_interrupt
               |                     find_get_page
               |                     find_lock_page
               |                     shmem_getpage_gfp
               |                     shmem_fault
               |                     __do_fault
               |                     handle_pte_fault
               |                     handle_mm_fault
               |                     __do_page_fault
               |                     do_page_fault
               |                     page_fault
               |                     HeapTupleSatisfiesMVCC
               |          
                --16.67%-- trace_current_buffer_lock_reserve
                          ftrace_raw_event_id_softirq
                          ftrace_raw_event_softirq_entry
                          __do_softirq
                          call_softirq
                          do_softirq
                          irq_exit
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          HeapTupleSatisfiesMVCC

     0.01%  postgres  postgres                       [.] pfree                              
            |
            --- pfree

     0.01%  postgres  postgres                       [.] RecoveryInProgress                 
            |
            --- RecoveryInProgress

     0.01%  postgres  postgres                       [.] FileAccess                         
            |
            --- FileAccess

     0.01%  postgres  postgres                       [.] BufTableInsert                     
            |
            --- BufTableInsert

     0.01%  postgres  [kernel.kallsyms]              [k] sysret_signal                      
            |
            --- sysret_signal
                __GI___libc_read

     0.01%  postgres  [kernel.kallsyms]              [k] __fsnotify_parent                  
            |
            --- __fsnotify_parent
               |          
               |--66.67%-- vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --33.33%-- sys_read
                          system_call
                          __GI___libc_read

     0.01%  postgres  [kernel.kallsyms]              [k] list_del                           
            |
            --- list_del
               |          
               |--41.31%-- __alloc_pages_nodemask
               |          alloc_pages_current
               |          pte_alloc_one
               |          __pte_alloc
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          |          
               |          |--52.59%-- StrategyGetBuffer
               |          |          
               |           --47.41%-- HeapTupleSatisfiesMVCC
               |          
               |--19.59%-- get_page_from_freelist
               |          __alloc_pages_nodemask
               |          alloc_pages_current
               |          pte_alloc_one
               |          __pte_alloc
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          HeapTupleSatisfiesMVCC
               |          
               |--19.58%-- __rmqueue
               |          get_page_from_freelist
               |          __alloc_pages_nodemask
               |          alloc_pages_current
               |          pte_alloc_one
               |          __pte_alloc
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          HeapTupleSatisfiesMVCC
               |          
                --19.52%-- napi_complete
                          igb_poll
                          net_rx_action
                          __do_softirq
                          call_softirq
                          do_softirq
                          irq_exit
                          do_IRQ
                          ret_from_intr
                          file_read_actor
                          generic_file_aio_read
                          do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.01%  postgres  [kernel.kallsyms]              [k] irq_exit                           
            |
            --- irq_exit
               |          
               |--79.99%-- smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--50.02%-- HeapTupleSatisfiesMVCC
               |          |          
               |          |--25.01%-- ExecEvalConst
               |          |          
               |           --24.97%-- GetPrivateRefCountEntry
               |          
                --20.01%-- apic_timer_interrupt
                          heap_getnext

     0.01%  postgres  [kernel.kallsyms]              [k] dyntick_save_progress_counter      
            |
            --- dyntick_save_progress_counter
                rcu_process_dyntick
                force_quiescent_state
                __rcu_process_callbacks
                rcu_process_callbacks
                __do_softirq
                call_softirq
                do_softirq
                irq_exit
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--20.01%-- HeapTupleSatisfiesMVCC
               |          
               |--20.01%-- PinBuffer
               |          
               |--20.01%-- heap_page_prune_opt
               |          
               |--20.00%-- slot_deform_tuple
               |          
                --19.97%-- FileRead

     0.01%  postgres  [kernel.kallsyms]              [k] do_timer                           
            |
            --- do_timer
                tick_do_update_jiffies64
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--40.02%-- HeapTupleSatisfiesMVCC
               |          
               |--20.00%-- hash_search_with_hash_value
               |          
               |--20.00%-- heap_page_prune_opt
               |          
                --19.98%-- file_read_actor
                          generic_file_aio_read
                          do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.01%  postgres  [kernel.kallsyms]              [k] do_softirq                         
            |
            --- do_softirq
                irq_exit
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--40.00%-- LWLockAcquire
               |          
               |--20.01%-- heap_page_prune_opt
               |          
               |--20.01%-- hash_search_with_hash_value
               |          
                --19.99%-- find_get_page
                          generic_file_aio_read
                          do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.01%  postgres  postgres                       [.] alloc_var                          
            |
            --- alloc_var

     0.01%  postgres  [kernel.kallsyms]              [k] native_sched_clock                 
            |
            --- native_sched_clock
               |          
               |--59.98%-- trace_clock_local
               |          rb_reserve_next_event
               |          ring_buffer_lock_reserve
               |          trace_buffer_lock_reserve
               |          trace_current_buffer_lock_reserve
               |          ftrace_raw_event_id_softirq
               |          |          
               |          |--66.70%-- ftrace_raw_event_softirq_raise
               |          |          raise_softirq
               |          |          run_local_timers
               |          |          update_process_times
               |          |          tick_sched_timer
               |          |          __run_hrtimer
               |          |          hrtimer_interrupt
               |          |          smp_apic_timer_interrupt
               |          |          apic_timer_interrupt
               |          |          |          
               |          |          |--50.04%-- slot_deform_tuple
               |          |          |          
               |          |           --49.96%-- file_read_actor
               |          |                     generic_file_aio_read
               |          |                     do_sync_read
               |          |                     vfs_read
               |          |                     sys_read
               |          |                     system_call
               |          |                     __GI___libc_read
               |          |          
               |           --33.30%-- ftrace_raw_event_softirq_exit
               |                     __do_softirq
               |                     call_softirq
               |                     do_softirq
               |                     irq_exit
               |                     smp_apic_timer_interrupt
               |                     apic_timer_interrupt
               |                     ExecQual
               |          
                --40.02%-- sched_clock
                          trace_clock_local
                          rb_reserve_next_event
                          ring_buffer_lock_reserve
                          trace_buffer_lock_reserve
                          trace_current_buffer_lock_reserve
                          ftrace_raw_event_id_softirq
                          ftrace_raw_event_softirq_exit
                          __do_softirq
                          call_softirq
                          do_softirq
                          irq_exit
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          |          
                          |--50.00%-- CheckForSerializableConflictOut
                          |          
                           --50.00%-- varstr_cmp

     0.01%  postgres  postgres                       [.] BufTableDelete                     
            |
            --- BufTableDelete

     0.01%  postgres  [kernel.kallsyms]              [k] run_timer_softirq                  
            |
            --- run_timer_softirq
                __do_softirq
                call_softirq
                do_softirq
                irq_exit
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--20.02%-- slot_getattr
               |          
               |--20.02%-- unlock_page
               |          __do_fault
               |          handle_pte_fault
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          HeapTupleSatisfiesMVCC
               |          
               |--20.00%-- pg_detoast_datum_packed
               |          
               |--19.98%-- varstr_cmp
               |          
                --19.96%-- file_read_actor
                          generic_file_aio_read
                          do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.01%  postgres  postgres                       [.] PinBuffer_Locked                   
            |
            --- PinBuffer_Locked

     0.01%  postgres  [kernel.kallsyms]              [k] inotify_dentry_parent_queue_event  
            |
            --- inotify_dentry_parent_queue_event
               |          
               |--60.01%-- vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --39.99%-- sys_read
                          system_call
                          __GI___libc_read

     0.01%  postgres  postgres                       [.] LookupTupleHashEntry               
            |
            --- LookupTupleHashEntry
               |          
               |--60.07%-- 0x1d5917000000000
                --39.93%-- [...]

     0.01%  postgres  [kernel.kallsyms]              [k] __rb_reserve_next                  
            |
            --- __rb_reserve_next
                rb_reserve_next_event
                ring_buffer_lock_reserve
                trace_buffer_lock_reserve
                trace_current_buffer_lock_reserve
               |          
               |--74.01%-- ftrace_raw_event_id_softirq
               |          |          
               |          |--66.66%-- ftrace_raw_event_softirq_entry
               |          |          __do_softirq
               |          |          call_softirq
               |          |          do_softirq
               |          |          irq_exit
               |          |          smp_apic_timer_interrupt
               |          |          apic_timer_interrupt
               |          |          |          
               |          |          |--50.02%-- shmem_fault
               |          |          |          __do_fault
               |          |          |          handle_pte_fault
               |          |          |          handle_mm_fault
               |          |          |          __do_page_fault
               |          |          |          do_page_fault
               |          |          |          page_fault
               |          |          |          HeapTupleSatisfiesMVCC
               |          |          |          
               |          |           --49.98%-- heap_page_prune_opt
               |          |          
               |           --33.34%-- ftrace_raw_event_softirq_exit
               |                     __do_softirq
               |                     call_softirq
               |                     do_softirq
               |                     irq_exit
               |                     smp_apic_timer_interrupt
               |                     apic_timer_interrupt
               |                     HeapTupleSatisfiesMVCC
               |          
                --25.99%-- ftrace_raw_event_id_net_dev_template
                          ftrace_raw_event_netif_rx
                          netif_rx
                          loopback_xmit
                          dev_hard_start_xmit
                          dev_queue_xmit
                          ip6_output_finish
                          ip6_output2
                          ip6_output
                          ip6_local_out
                          ip6_push_pending_frames
                          udp_v6_push_pending_frames
                          udpv6_sendmsg
                          inet_sendmsg
                          sock_sendmsg
                          sys_sendto
                          system_call
                          __libc_send

     0.01%  postgres  postgres                       [.] AllocSetFree                       
            |
            --- AllocSetFree

     0.01%  postgres  [kernel.kallsyms]              [k] error_swapgs                       
            |
            --- error_swapgs
                HeapTupleSatisfiesMVCC

     0.01%  postgres  [kernel.kallsyms]              [k] error_sti                          
            |
            --- error_sti
                HeapTupleSatisfiesMVCC

     0.01%  postgres  [kernel.kallsyms]              [k] get_page_from_freelist             
            |
            --- get_page_from_freelist
                __alloc_pages_nodemask
                alloc_pages_current
                pte_alloc_one
                __pte_alloc
                handle_mm_fault
                __do_page_fault
                do_page_fault
                page_fault
                HeapTupleSatisfiesMVCC

     0.01%  postgres  postgres                       [.] execTuplesMatch                    
            |
            --- execTuplesMatch

     0.01%  postgres  [kernel.kallsyms]              [k] ftrace_raw_event_id_softirq        
            |
            --- ftrace_raw_event_id_softirq
               |          
               |--50.01%-- ftrace_raw_event_softirq_raise
               |          raise_softirq
               |          run_local_timers
               |          update_process_times
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--50.01%-- page_add_file_rmap
               |          |          __do_fault
               |          |          handle_pte_fault
               |          |          handle_mm_fault
               |          |          __do_page_fault
               |          |          do_page_fault
               |          |          page_fault
               |          |          heap_page_prune_opt
               |          |          
               |           --49.99%-- heapgetpage
               |          
                --49.99%-- ftrace_raw_event_softirq_entry
                          __do_softirq
                          call_softirq
                          do_softirq
                          irq_exit
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          |          
                          |--50.02%-- do_page_fault
                          |          page_fault
                          |          HeapTupleSatisfiesMVCC
                          |          
                           --49.98%-- bcTruelen

     0.01%  postgres  [kernel.kallsyms]              [k] update_cfs_shares                  
            |
            --- update_cfs_shares
               |          
               |--50.01%-- scheduler_tick
               |          update_process_times
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--50.00%-- __inc_zone_page_state
               |          |          page_add_file_rmap
               |          |          __do_fault
               |          |          handle_pte_fault
               |          |          handle_mm_fault
               |          |          __do_page_fault
               |          |          do_page_fault
               |          |          page_fault
               |          |          HeapTupleSatisfiesMVCC
               |          |          
               |           --50.00%-- hash_search_with_hash_value
               |          
                --49.99%-- task_tick_fair
                          scheduler_tick
                          update_process_times
                          tick_sched_timer
                          __run_hrtimer
                          hrtimer_interrupt
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          HeapTupleSatisfiesMVCC

     0.01%  postgres  postgres                       [.] hash_search                        
            |
            --- hash_search
               |          
               |--75.01%-- 0x1d5917000000000
               |          
                --24.99%-- 0x1d72000

     0.01%  postgres  postgres                       [.] int8_avg_accum                     
            |
            --- int8_avg_accum

     0.01%  postgres  [kernel.kallsyms]              [k] ktime_get                          
            |
            --- ktime_get
               |          
               |--50.00%-- tick_dev_program_event
               |          tick_program_event
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--50.01%-- page_add_file_rmap
               |          |          __do_fault
               |          |          handle_pte_fault
               |          |          handle_mm_fault
               |          |          __do_page_fault
               |          |          do_page_fault
               |          |          page_fault
               |          |          HeapTupleSatisfiesMVCC
               |          |          
               |           --49.99%-- HeapTupleSatisfiesMVCC
               |          
                --50.00%-- tick_sched_timer
                          __run_hrtimer
                          hrtimer_interrupt
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          |          
                          |--50.04%-- shmem_fault
                          |          __do_fault
                          |          handle_pte_fault
                          |          handle_mm_fault
                          |          __do_page_fault
                          |          do_page_fault
                          |          page_fault
                          |          HeapTupleSatisfiesMVCC
                          |          
                           --49.96%-- varstr_cmp

     0.01%  postgres  [kernel.kallsyms]              [k] ftrace_trace_userstack             
            |
            --- ftrace_trace_userstack
                trace_nowake_buffer_unlock_commit
               |          
               |--49.98%-- ftrace_raw_event_id_softirq
               |          ftrace_raw_event_softirq_entry
               |          __do_softirq
               |          call_softirq
               |          do_softirq
               |          irq_exit
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--50.02%-- bcTruelen
               |          |          
               |           --49.98%-- slot_getattr
               |          
               |--25.01%-- ftrace_raw_event_id_net_dev_template
               |          ftrace_raw_event_netif_rx
               |          netif_rx
               |          0xffffffffa05a1097
               |          __netif_receive_skb
               |          netif_receive_skb
               |          napi_skb_finish
               |          napi_gro_receive
               |          igb_poll
               |          net_rx_action
               |          __do_softirq
               |          call_softirq
               |          do_softirq
               |          irq_exit
               |          do_IRQ
               |          ret_from_intr
               |          HeapTupleSatisfiesMVCC
               |          
                --25.01%-- ftrace_raw_event_sched_stat_runtime
                          update_curr
                          task_tick_fair
                          scheduler_tick
                          update_process_times
                          tick_sched_timer
                          __run_hrtimer
                          hrtimer_interrupt
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          HeapTupleSatisfiesMVCC

     0.01%  postgres  postgres                       [.] palloc                             
            |
            --- palloc

     0.01%  postgres  [kernel.kallsyms]              [k] copy_user_generic                  
            |
            --- copy_user_generic
               |          
               |--75.00%-- generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --25.00%-- file_read_actor
                          generic_file_aio_read
                          do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.01%  postgres  [kernel.kallsyms]              [k] current_kernel_time                
            |
            --- current_kernel_time
               |          
               |--50.01%-- auditsys
               |          __GI___libc_read
               |          
                --49.99%-- audit_syscall_entry
                          auditsys
                          __GI___libc_read

     0.01%  postgres  [kernel.kallsyms]              [k] cap_file_permission                
            |
            --- cap_file_permission
                rw_verify_area
                vfs_read
                sys_read
                system_call
                __GI___libc_read

     0.01%  postgres  [kernel.kallsyms]              [k] sysret_audit                       
            |
            --- sysret_audit
                __GI___libc_read

     0.01%  postgres  [kernel.kallsyms]              [k] security_file_permission           
            |
            --- security_file_permission
               |          
               |--50.01%-- vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --49.99%-- rw_verify_area
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.01%  postgres  postgres                       [.] InstrStopNode                      
            |
            --- InstrStopNode

     0.01%  postgres  [kernel.kallsyms]              [k] alloc_pages_current                
            |
            --- alloc_pages_current
                pte_alloc_one
                __pte_alloc
                handle_mm_fault
                __do_page_fault
                do_page_fault
                page_fault
                HeapTupleSatisfiesMVCC

     0.01%  postgres  postgres                       [.] memcmp@plt                         
            |
            --- memcmp@plt

     0.01%  postgres  postgres                       [.] InstrStartNode                     
            |
            --- InstrStartNode

     0.01%  postgres  [kernel.kallsyms]              [k] raise_softirq                      
            |
            --- raise_softirq
                run_local_timers
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--33.34%-- HeapTupleSatisfiesMVCC
               |          
               |--33.33%-- ReadBuffer_common
               |          
                --33.33%-- slot_deform_tuple

     0.01%  postgres  postgres                       [.] DirectFunctionCall1Coll            
            |
            --- DirectFunctionCall1Coll

     0.01%  postgres  [kernel.kallsyms]              [k] perf_event_task_tick               
            |
            --- perf_event_task_tick
                scheduler_tick
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--33.34%-- bcTruelen
               |          
               |--33.33%-- slot_getattr
               |          
                --33.33%-- find_lock_page
                          shmem_getpage_gfp
                          shmem_fault
                          __do_fault
                          handle_pte_fault
                          handle_mm_fault
                          __do_page_fault
                          do_page_fault
                          page_fault
                          HeapTupleSatisfiesMVCC

     0.01%  postgres  postgres                       [.] ExecStoreVirtualTuple              
            |
            --- ExecStoreVirtualTuple

     0.01%  postgres  [kernel.kallsyms]              [k] ring_buffer_event_data             
            |
            --- ring_buffer_event_data
                trace_current_buffer_lock_reserve
                ftrace_raw_event_id_softirq
                ftrace_raw_event_softirq_raise
                raise_softirq
                run_local_timers
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--33.34%-- slot_getattr
               |          
               |--33.34%-- HeapTupleSatisfiesMVCC
               |          
                --33.31%-- __GI___libc_read

     0.01%  postgres  postgres                       [.] free_var                           
            |
            --- free_var

     0.01%  postgres  [kernel.kallsyms]              [k] ktime_get_update_offsets           
            |
            --- ktime_get_update_offsets
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--33.35%-- do_page_fault
               |          page_fault
               |          HeapTupleSatisfiesMVCC
               |          
               |--33.35%-- bcTruelen
               |          
                --33.31%-- CheckForSerializableConflictOut

     0.01%  postgres  postgres                       [.] ExecProcNode                       
            |
            --- ExecProcNode

     0.01%  postgres  postgres                       [.] hashbpchar                         
            |
            --- hashbpchar

     0.01%  postgres  [kernel.kallsyms]              [k] rb_end_commit                      
            |
            --- rb_end_commit
                ring_buffer_unlock_commit
                trace_nowake_buffer_unlock_commit
                ftrace_raw_event_id_softirq
                ftrace_raw_event_softirq_raise
                raise_softirq
                run_local_timers
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--33.35%-- HeapTupleSatisfiesMVCC
               |          
               |--33.34%-- pg_detoast_datum_packed
               |          
                --33.31%-- heapgetpage

     0.01%  postgres  [kernel.kallsyms]              [k] hrtimer_run_pending                
            |
            --- hrtimer_run_pending
                __do_softirq
                call_softirq
                do_softirq
                irq_exit
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--33.36%-- find_get_page
               |          find_lock_page
               |          shmem_getpage_gfp
               |          shmem_fault
               |          __do_fault
               |          handle_pte_fault
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          HeapTupleSatisfiesMVCC
               |          
               |--33.35%-- HeapTupleSatisfiesMVCC
               |          
                --33.30%-- file_read_actor
                          generic_file_aio_read
                          do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.01%  postgres  [kernel.kallsyms]              [k] _spin_unlock_irqrestore            
            |
            --- _spin_unlock_irqrestore
               |          
               |--33.36%-- __rcu_process_callbacks
               |          rcu_process_callbacks
               |          __do_softirq
               |          call_softirq
               |          do_softirq
               |          irq_exit
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          bcTruelen
               |          
               |--33.33%-- ntp_tick_length
               |          do_timer
               |          tick_do_update_jiffies64
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          varstr_cmp
               |          
                --33.31%-- rcu_process_gp_end
                          __rcu_process_callbacks
                          rcu_process_callbacks
                          __do_softirq
                          call_softirq
                          do_softirq
                          irq_exit
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          LWLockRelease

     0.01%  postgres  postgres                       [.] BufTableHashCode                   
            |
            --- BufTableHashCode

     0.01%  postgres  postgres                       [.] FunctionCall2Coll                  
            |
            --- FunctionCall2Coll

     0.01%  postgres  [kernel.kallsyms]              [k] update_cpu_load                    
            |
            --- update_cpu_load
                scheduler_tick
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--33.36%-- HeapTupleSatisfiesMVCC
               |          
               |--33.35%-- find_get_page
               |          find_lock_page
               |          shmem_getpage_gfp
               |          shmem_fault
               |          __do_fault
               |          handle_pte_fault
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          HeapTupleSatisfiesMVCC
               |          
                --33.28%-- file_read_actor
                          generic_file_aio_read
                          do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.01%  postgres  [kernel.kallsyms]              [k] timekeeping_update                 
            |
            --- timekeeping_update
                do_timer
                tick_do_update_jiffies64
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--33.36%-- HeapTupleSatisfiesMVCC
               |          
               |--33.32%-- slot_getattr
               |          
                --33.32%-- file_read_actor
                          generic_file_aio_read
                          do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.01%  postgres  postgres                       [.] int8_numeric                       
            |
            --- int8_numeric

     0.01%  postgres  postgres                       [.] IsCatalogRelation                  
            |
            --- IsCatalogRelation

     0.01%  postgres  postgres                       [.] smgrread                           
            |
            --- smgrread

     0.01%  postgres  [kernel.kallsyms]              [k] tick_do_update_jiffies64           
            |
            --- tick_do_update_jiffies64
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--66.64%-- file_read_actor
               |          generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --33.36%-- ExecMakeFunctionResultNoSets

     0.01%  postgres  [kernel.kallsyms]              [k] tick_dev_program_event             
            |
            --- tick_dev_program_event
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--33.36%-- bpcharle
               |          
               |--33.32%-- ExecStoreTuple
               |          
                --33.32%-- varstr_cmp

     0.01%  postgres  [kernel.kallsyms]              [k] update_curr                        
            |
            --- update_curr
                task_tick_fair
                scheduler_tick
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--33.34%-- bcTruelen
               |          
               |--33.34%-- slot_deform_tuple
               |          
                --33.32%-- UnpinBuffer.clone.0

     0.00%  postgres  [kernel.kallsyms]              [k] __local_bh_enable                  
            |
            --- __local_bh_enable
               |          
               |--50.01%-- __do_softirq
               |          call_softirq
               |          do_softirq
               |          irq_exit
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          find_lock_page
               |          shmem_getpage_gfp
               |          shmem_fault
               |          __do_fault
               |          handle_pte_fault
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          HeapTupleSatisfiesMVCC
               |          
                --49.99%-- call_softirq
                          do_softirq
                          irq_exit
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          __do_page_fault
                          do_page_fault
                          page_fault
                          HeapTupleSatisfiesMVCC

     0.00%  postgres  [kernel.kallsyms]              [k] native_apic_mem_write              
            |
            --- native_apic_mem_write
                apic_timer_interrupt
               |          
               |--50.00%-- heap_page_prune_opt
               |          
                --50.00%-- bcTruelen

     0.00%  postgres  [kernel.kallsyms]              [k] idle_cpu                           
            |
            --- idle_cpu
               |          
               |--50.02%-- irq_enter
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          ExecScan
               |          
                --49.98%-- irq_exit
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          varstr_cmp

     0.00%  postgres  [kernel.kallsyms]              [k] update_rt_offset                   
            |
            --- update_rt_offset
               |          
               |--50.00%-- do_timer
               |          tick_do_update_jiffies64
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          find_lock_page
               |          shmem_getpage_gfp
               |          shmem_fault
               |          __do_fault
               |          handle_pte_fault
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          HeapTupleSatisfiesMVCC
               |          
                --50.00%-- timekeeping_update
                          do_timer
                          tick_do_update_jiffies64
                          tick_sched_timer
                          __run_hrtimer
                          hrtimer_interrupt
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          find_lock_page
                          shmem_getpage_gfp
                          shmem_fault
                          __do_fault
                          handle_pte_fault
                          handle_mm_fault
                          __do_page_fault
                          do_page_fault
                          page_fault
                          HeapTupleSatisfiesMVCC

     0.00%  postgres  [kernel.kallsyms]              [k] perf_pmu_disable                   
            |
            --- perf_pmu_disable
               |          
               |--50.00%-- perf_event_task_tick
               |          scheduler_tick
               |          update_process_times
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          pgstat_end_function_usage
               |          
                --50.00%-- perf_adjust_freq_unthr_context
                          perf_event_task_tick
                          scheduler_tick
                          update_process_times
                          tick_sched_timer
                          __run_hrtimer
                          hrtimer_interrupt
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          GetPrivateRefCountEntry

     0.00%  postgres  [kernel.kallsyms]              [k] rb_insert_color                    
            |
            --- rb_insert_color
               |          
               |--50.00%-- __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          ExecStoreTuple
               |          
                --50.00%-- enqueue_hrtimer
                          __run_hrtimer
                          hrtimer_interrupt
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          heap_getnext

     0.00%  postgres  [kernel.kallsyms]              [k] ring_buffer_unlock_commit          
            |
            --- ring_buffer_unlock_commit
               |          
               |--50.01%-- trace_nowake_buffer_unlock_commit
               |          ftrace_raw_event_id_softirq
               |          ftrace_raw_event_softirq_entry
               |          __do_softirq
               |          call_softirq
               |          do_softirq
               |          irq_exit
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          HeapTupleSatisfiesMVCC
               |          
                --49.99%-- ftrace_raw_event_id_softirq
                          ftrace_raw_event_softirq_raise
                          raise_softirq
                          run_local_timers
                          update_process_times
                          tick_sched_timer
                          __run_hrtimer
                          hrtimer_interrupt
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          hash_search_with_hash_value

     0.00%  postgres  [kernel.kallsyms]              [k] clockevents_program_event          
            |
            --- clockevents_program_event
                tick_dev_program_event
                tick_program_event
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--50.02%-- __do_page_fault
               |          do_page_fault
               |          page_fault
               |          HeapTupleSatisfiesMVCC
               |          
                --49.98%-- varstr_cmp

     0.00%  postgres  [kernel.kallsyms]              [k] sched_clock_tick                   
            |
            --- sched_clock_tick
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--50.02%-- bcTruelen
               |          
                --49.98%-- file_read_actor
                          generic_file_aio_read
                          do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.00%  postgres  postgres                       [.] add_var                            
            |
            --- add_var
               |          
               |--50.05%-- 0x0
                --49.95%-- [...]

     0.00%  postgres  postgres                       [.] TupleHashTableMatch                
            |
            --- TupleHashTableMatch

     0.00%  postgres  [kernel.kallsyms]              [k] rcu_check_callbacks                
            |
            --- rcu_check_callbacks
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--50.03%-- LWLockAcquire
               |          
                --49.97%-- heap_getnext

     0.00%  postgres  postgres                       [.] MemoryContextResetOnly             
            |
            --- MemoryContextResetOnly

     0.00%  postgres  [kernel.kallsyms]              [k] path_put                           
            |
            --- path_put
                sysret_audit
                __GI___libc_read

     0.00%  postgres  [kernel.kallsyms]              [k] enqueue_hrtimer                    
            |
            --- enqueue_hrtimer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--50.02%-- do_page_fault
               |          page_fault
               |          HeapTupleSatisfiesMVCC
               |          
                --49.98%-- ExecMakeFunctionResultNoSets

     0.00%  postgres  [kernel.kallsyms]              [k] __percpu_counter_add               
            |
            --- __percpu_counter_add
                account_user_time
                account_process_tick
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--50.03%-- ExecQual
               |          
                --49.97%-- varstr_cmp

     0.00%  postgres  postgres                       [.] AllocSetReset                      
            |
            --- AllocSetReset

     0.00%  postgres  [kernel.kallsyms]              [k] dput                               
            |
            --- dput
                path_put
                __audit_syscall_exit
                sysret_audit
                __GI___libc_read

     0.00%  postgres  [kernel.kallsyms]              [k] trace_nowake_buffer_unlock_commit  
            |
            --- trace_nowake_buffer_unlock_commit
               |          
               |--50.01%-- ftrace_raw_event_softirq_raise
               |          raise_softirq
               |          run_local_timers
               |          update_process_times
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          slot_deform_tuple
               |          
                --49.99%-- ftrace_raw_event_sched_stat_runtime
                          update_curr
                          task_tick_fair
                          scheduler_tick
                          update_process_times
                          tick_sched_timer
                          __run_hrtimer
                          hrtimer_interrupt
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          file_read_actor
                          generic_file_aio_read
                          do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.00%  postgres  [kernel.kallsyms]              [k] select_idle_sibling                
            |
            --- select_idle_sibling
                select_task_rq_fair
                try_to_wake_up
                wake_up_process
                hrtimer_wakeup
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                do_page_fault
                page_fault
                StrategyGetBuffer

     0.00%  postgres  postgres                       [.] build_dummy_tuple                  
            |
            --- build_dummy_tuple

     0.00%  postgres  [kernel.kallsyms]              [k] find_busiest_group                 
            |
            --- find_busiest_group
                thread_return
                schedule_hrtimeout_range
                poll_schedule_timeout
                do_sys_poll
                sys_poll
                system_call
                __poll
                0x22000

     0.00%  postgres  postgres                       [.] textin                             
            |
            --- textin

     0.00%  postgres  postgres                       [.] ResourceOwnerCreate                
            |
            --- ResourceOwnerCreate

     0.00%  postgres  postgres                       [.] cstring_to_text_with_len           
            |
            --- cstring_to_text_with_len

     0.00%  postgres  postgres                       [.] _bt_compare                        
            |
            --- _bt_compare

     0.00%  postgres  [kernel.kallsyms]              [k] timespec_trunc                     
            |
            --- timespec_trunc
                file_update_time
                __do_fault
                handle_pte_fault
                handle_mm_fault
                __do_page_fault
                do_page_fault
                page_fault
                StrategyGetBuffer

     0.00%  postgres  libc-2.12.so                   [.] __isnan                            
            |
            --- __isnan
                vfprintf
                _IO_vsnprintf

     0.00%  postgres  postgres                       [.] superuser_arg                      
            |
            --- superuser_arg

     0.00%  postgres  [ip_tables]                    [k] ipt_do_table                       
            |
            --- ipt_do_table
                ipt_local_out_hook
                nf_iterate
                nf_hook_slow
                __ip_local_out
                ip_local_out
                ip_queue_xmit
                tcp_transmit_skb
                tcp_send_ack
                tcp_delack_timer
                run_timer_softirq
                __do_softirq
                call_softirq
                do_softirq
                irq_exit
                smp_apic_timer_interrupt
                apic_timer_interrupt
                slot_getattr

     0.00%  postgres  [kernel.kallsyms]              [k] policy_nodemask                    
            |
            --- policy_nodemask
                alloc_pages_current
                pte_alloc_one
                __pte_alloc
                handle_mm_fault
                __do_page_fault
                do_page_fault
                page_fault
                HeapTupleSatisfiesMVCC

     0.00%  postgres  [kernel.kallsyms]              [k] file_update_time                   
            |
            --- file_update_time
                handle_pte_fault
                handle_mm_fault
                __do_page_fault
                do_page_fault
                page_fault
                StrategyGetBuffer

     0.00%  postgres  [kernel.kallsyms]              [k] get_page                           
            |
            --- get_page
                __do_fault
                handle_pte_fault
                handle_mm_fault
                __do_page_fault
                do_page_fault
                page_fault
                StrategyGetBuffer

     0.00%  postgres  [nf_conntrack_ipv4]            [k] ipv4_confirm                       
            |
            --- ipv4_confirm
                nf_hook_slow
                ip_local_deliver
                ip_rcv_finish
                ip_rcv
                __netif_receive_skb
                process_backlog
                net_rx_action
                __do_softirq
                call_softirq
                do_softirq
                irq_exit
                do_IRQ
                ret_from_intr
                bcTruelen

     0.00%  postgres  [kernel.kallsyms]              [k] set_page_dirty                     
            |
            --- set_page_dirty
                __do_fault
                handle_pte_fault
                handle_mm_fault
                __do_page_fault
                do_page_fault
                page_fault
                StrategyGetBuffer

     0.00%  postgres  [kernel.kallsyms]              [k] run_posix_cpu_timers               
            |
            --- run_posix_cpu_timers
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                shmem_fault
                __do_fault
                handle_pte_fault
                handle_mm_fault
                __do_page_fault
                do_page_fault
                page_fault
                HeapTupleSatisfiesMVCC

     0.00%  postgres  [kernel.kallsyms]              [k] force_quiescent_state              
            |
            --- force_quiescent_state
                __rcu_process_callbacks
                rcu_process_callbacks
                __do_softirq
                call_softirq
                do_softirq
                irq_exit
                smp_apic_timer_interrupt
                apic_timer_interrupt
                ExecMakeFunctionResultNoSets

     0.00%  postgres  [kernel.kallsyms]              [k] hrtimer_interrupt                  
            |
            --- hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                HeapTupleSatisfiesMVCC

     0.00%  postgres  [kernel.kallsyms]              [k] rb_erase                           
            |
            --- rb_erase
                __remove_hrtimer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                do_page_fault
                page_fault
                HeapTupleSatisfiesMVCC

     0.00%  postgres  [kernel.kallsyms]              [k] irq_enter                          
            |
            --- irq_enter
                smp_apic_timer_interrupt
                apic_timer_interrupt
                ExecMakeFunctionResultNoSets

     0.00%  postgres  [kernel.kallsyms]              [k] smp_apic_timer_interrupt           
            |
            --- smp_apic_timer_interrupt
                apic_timer_interrupt
                varstr_cmp

     0.00%  postgres  [kernel.kallsyms]              [k] __run_hrtimer                      
            |
            --- __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                HeapTupleSatisfiesMVCC

     0.00%  postgres  [kernel.kallsyms]              [k] x86_pmu_disable                    
            |
            --- x86_pmu_disable
                perf_pmu_disable
                perf_adjust_freq_unthr_context
                perf_event_task_tick
                scheduler_tick
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                heap_page_prune_opt

     0.00%  postgres  [ioatdma]                      [k] ioat2_issue_pending                
            |
            --- ioat2_issue_pending
                dma_issue_pending_all
                net_rx_action
                __do_softirq
                call_softirq
                do_softirq
                irq_exit
                do_IRQ
                ret_from_intr
                hash_search_with_hash_value

     0.00%  postgres  [kernel.kallsyms]              [k] sched_clock_cpu                    
            |
            --- sched_clock_cpu
                update_rq_clock
                scheduler_tick
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                page_add_file_rmap
                __do_fault
                handle_pte_fault
                handle_mm_fault
                __do_page_fault
                do_page_fault
                page_fault
                HeapTupleSatisfiesMVCC

     0.00%  postgres  [kernel.kallsyms]              [k] jiffies_to_timeval                 
            |
            --- jiffies_to_timeval
                account_user_time
                account_process_tick
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                slot_deform_tuple

     0.00%  postgres  [kernel.kallsyms]              [k] rcu_bh_qs                          
            |
            --- rcu_bh_qs
                call_softirq
                do_softirq
                irq_exit
                smp_apic_timer_interrupt
                apic_timer_interrupt
                HeapTupleSatisfiesMVCC

     0.00%  postgres  [kernel.kallsyms]              [k] trace_buffer_lock_reserve          
            |
            --- trace_buffer_lock_reserve
                trace_current_buffer_lock_reserve
                ftrace_raw_event_id_softirq
                ftrace_raw_event_softirq_entry
                __do_softirq
                call_softirq
                do_softirq
                irq_exit
                smp_apic_timer_interrupt
                apic_timer_interrupt
                varstr_cmp

     0.00%  postgres  postgres                       [.] FunctionCall1Coll                  
            |
            --- FunctionCall1Coll

     0.00%  postgres  [kernel.kallsyms]              [k] acct_update_integrals              
            |
            --- acct_update_integrals
                account_user_time
                account_process_tick
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                ExecQual

     0.00%  postgres  [kernel.kallsyms]              [k] ftrace_raw_event_softirq_entry     
            |
            --- ftrace_raw_event_softirq_entry
                call_softirq
                do_softirq
                irq_exit
                smp_apic_timer_interrupt
                apic_timer_interrupt
                HeapTupleSatisfiesMVCC

     0.00%  postgres  [kernel.kallsyms]              [k] tracing_generic_entry_update       
            |
            --- tracing_generic_entry_update
                trace_current_buffer_lock_reserve
                ftrace_raw_event_id_softirq
                ftrace_raw_event_softirq_entry
                __do_softirq
                call_softirq
                do_softirq
                irq_exit
                smp_apic_timer_interrupt
                apic_timer_interrupt
                hash_search_with_hash_value

     0.00%  postgres  [kernel.kallsyms]              [k] account_process_tick               
            |
            --- account_process_tick
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                check_stack_depth

     0.00%  postgres  [kernel.kallsyms]              [k] filter_current_check_discard       
            |
            --- filter_current_check_discard
                ftrace_raw_event_id_softirq
                ftrace_raw_event_softirq_exit
                __do_softirq
                call_softirq
                do_softirq
                irq_exit
                smp_apic_timer_interrupt
                apic_timer_interrupt
                HeapTupleSatisfiesMVCC

     0.00%  postgres  [kernel.kallsyms]              [k] ftrace_raw_event_sched_migrate_task
            |
            --- ftrace_raw_event_sched_migrate_task
                set_task_cpu
                try_to_wake_up
                wake_up_process
                hrtimer_wakeup
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                ResourceOwnerEnlargeBuffers

     0.00%  postgres  [kernel.kallsyms]              [k] security_inode_permission          
            |
            --- security_inode_permission
                __link_path_walk
                path_walk
                do_path_lookup
                do_filp_open
                do_sys_open
                sys_open
                system_call
                __GI___libc_open

     0.00%  postgres  [kernel.kallsyms]              [k] cpu_quiet_msk                      
            |
            --- cpu_quiet_msk
                rcu_process_dyntick
                force_quiescent_state
                __rcu_process_callbacks
                rcu_process_callbacks
                __do_softirq
                call_softirq
                do_softirq
                irq_exit
                smp_apic_timer_interrupt
                apic_timer_interrupt
                ExecEvalConst

     0.00%  postgres  [kernel.kallsyms]              [k] intel_pmu_disable_all              
            |
            --- intel_pmu_disable_all
                x86_pmu_disable
                perf_pmu_disable
                perf_adjust_freq_unthr_context
                perf_event_task_tick
                scheduler_tick
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                file_read_actor
                generic_file_aio_read
                do_sync_read
                vfs_read
                sys_read
                system_call
                __GI___libc_read

     0.00%  postgres  [kernel.kallsyms]              [k] sysret_careful                     
            |
            --- sysret_careful
                __GI___libc_read

     0.00%  postgres  [kernel.kallsyms]              [k] ip_route_input_slow                
            |
            --- ip_route_input_slow
                ip_route_input
                ip_rcv_finish
                ip_rcv
                __netif_receive_skb
                netif_receive_skb
                napi_skb_finish
                napi_gro_receive
                igb_poll
                net_rx_action
                __do_softirq
                call_softirq
                do_softirq
                irq_exit
                do_IRQ
                ret_from_intr
                generic_file_aio_read
                do_sync_read
                vfs_read
                sys_read
                system_call
                __GI___libc_read

     0.00%  postgres  [kernel.kallsyms]              [k] pte_alloc_one                      
            |
            --- pte_alloc_one
                handle_mm_fault
                __do_page_fault
                do_page_fault
                page_fault
                HeapTupleSatisfiesMVCC

     0.00%  postgres  [kernel.kallsyms]              [k] enqueue_task                       
            |
            --- enqueue_task
                activate_task
                try_to_wake_up
                wake_up_process
                hrtimer_wakeup
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                bpcharle

     0.00%  postgres  [kernel.kallsyms]              [k] ftrace_raw_event_sched_stat_runtime
            |
            --- ftrace_raw_event_sched_stat_runtime
                update_curr
                task_tick_fair
                scheduler_tick
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                hash_search_with_hash_value

     0.00%  postgres  [kernel.kallsyms]              [k] ftrace_trace_stack                 
            |
            --- ftrace_trace_stack
                ftrace_raw_event_id_softirq
                ftrace_raw_event_softirq_raise
                raise_softirq
                run_local_timers
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                vfs_read
                sys_read
                system_call
                __GI___libc_read

     0.00%  postgres  [kernel.kallsyms]              [k] task_of                            
            |
            --- task_of
                task_tick_fair
                scheduler_tick
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                varstr_cmp

     0.00%  postgres  [kernel.kallsyms]              [k] do_IRQ                             
            |
            --- do_IRQ
                ret_from_intr
                bpcharle

     0.00%  postgres  [kernel.kallsyms]              [k] perf_adjust_freq_unthr_context     
            |
            --- perf_adjust_freq_unthr_context
                perf_event_task_tick
                scheduler_tick
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                hash_search_with_hash_value

     0.00%  postgres  [kernel.kallsyms]              [k] check_for_new_grace_period         
            |
            --- check_for_new_grace_period
                __rcu_process_callbacks
                rcu_process_callbacks
                __do_softirq
                call_softirq
                do_softirq
                irq_exit
                smp_apic_timer_interrupt
                apic_timer_interrupt
                StartBufferIO

     0.00%  postgres  [kernel.kallsyms]              [k] set_normalized_timespec            
            |
            --- set_normalized_timespec
                timekeeping_update
                do_timer
                tick_do_update_jiffies64
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                varstr_cmp

     0.00%  postgres  postgres                       [.] set_cheapest                       
            |
            --- set_cheapest

     0.00%  postgres  libc-2.12.so                   [.] vfprintf                           
            |
            --- vfprintf
                _IO_vsnprintf
                0x11

     0.00%  postgres  [kernel.kallsyms]              [k] net_rx_action                      
            |
            --- net_rx_action
                __do_softirq
                call_softirq
                do_softirq
                irq_exit
                do_IRQ
                ret_from_intr
                heap_page_prune_opt

     0.00%  postgres  libc-2.12.so                   [.] __snprintf                         
            |
            --- __snprintf

     0.00%  postgres  postgres                       [.] expression_tree_walker             
            |
            --- expression_tree_walker

     0.00%  postgres  libc-2.12.so                   [.] __strlen_sse42                     
            |
            --- __strlen_sse42

     0.00%  postgres  [kernel.kallsyms]              [k] filemap_fault                      
            |
            --- filemap_fault
                __do_fault
                handle_pte_fault
                handle_mm_fault
                __do_page_fault
                do_page_fault
                page_fault
                base_yyparse
                (nil)

     0.00%  postgres  postgres                       [.] config_enum_get_options            
            |
            --- config_enum_get_options

     0.00%  postgres  libc-2.12.so                   [.] __poll                             
            |
            --- __poll
                (nil)

     0.00%  postgres  [kernel.kallsyms]              [k] perf_pmu_rotate_start              
            |
            --- perf_pmu_rotate_start
                __perf_event_task_sched_in
                finish_task_switch
                thread_return
                schedule_hrtimeout_range
                poll_schedule_timeout
                do_sys_poll
                sys_poll
                system_call
                __poll
                (nil)



#
# (For a higher level overview, try: perf report --sort comm,dso)
#
