# ========
# captured on: Tue Sep 22 15:10:16 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 = { 13 }
# HEADER_CPU_TOPOLOGY info available, use -I to display
# HEADER_NUMA_TOPOLOGY info available, use -I to display
# ========
#
# Samples: 26K of event 'cycles'
# Event count (approx.): 18915056775
#
# Overhead   Command                  Shared Object                                   Symbol
# ........  ........  .............................  .......................................
#
     7.46%  postgres  postgres                       [.] slot_deform_tuple                  
            |
            --- slot_deform_tuple

     5.53%  postgres  postgres                       [.] hash_search_with_hash_value        
            |
            --- hash_search_with_hash_value
               |          
               |--2.76%-- 0x1d4108000000000
                --97.24%-- [...]

     5.13%  postgres  postgres                       [.] bcTruelen                          
            |
            --- bcTruelen

     4.90%  postgres  postgres                       [.] HeapTupleSatisfiesMVCC             
            |
            --- HeapTupleSatisfiesMVCC

     4.24%  postgres  postgres                       [.] varstr_cmp                         
            |
            --- varstr_cmp

     3.84%  postgres  postgres                       [.] bpchareq                           
            |
            --- bpchareq

     3.36%  postgres  libc-2.12.so                   [.] memcpy                             
            |
            --- memcpy
               |          
               |--93.09%-- networkjoinsel
                --6.91%-- [...]

     3.11%  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

     2.96%  postgres  postgres                       [.] slot_getattr                       
            |
            --- slot_getattr

     2.60%  postgres  postgres                       [.] ExecMakeFunctionResultNoSets       
            |
            --- ExecMakeFunctionResultNoSets

     2.47%  postgres  postgres                       [.] shm_mq_inc_bytes_read              
            |
            --- shm_mq_inc_bytes_read

     2.40%  postgres  postgres                       [.] heap_getnext                       
            |
            --- heap_getnext

     2.19%  postgres  postgres                       [.] ExecProject                        
            |
            --- ExecProject

     2.11%  postgres  postgres                       [.] add_abs                            
            |
            --- add_abs

     1.88%  postgres  postgres                       [.] AllocSetAlloc                      
            |
            --- AllocSetAlloc
               |          
               |--8.32%-- networkjoinsel
                --91.68%-- [...]

     1.69%  postgres  postgres                       [.] bpcharle                           
            |
            --- bpcharle

     1.62%  postgres  postgres                       [.] LWLockAcquire                      
            |
            --- LWLockAcquire

     1.60%  postgres  [kernel.kallsyms].vsyscall_fn  [.] vread_tsc                          
            |
            --- vread_tsc
               |          
               |--85.92%-- 0x7fff59744814
               |          0x7fff597448bc
               |          __gettimeofday
               |          
                --14.08%-- 0x7fff597448bc
                          __gettimeofday

     1.51%  postgres  postgres                       [.] hash_any                           
            |
            --- hash_any

     1.28%  postgres  postgres                       [.] ExecScan                           
            |
            --- ExecScan

     1.27%  postgres  postgres                       [.] s_lock                             
            |
            --- s_lock

     1.23%  postgres  postgres                       [.] shm_mq_receive_bytes               
            |
            --- shm_mq_receive_bytes

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

     1.17%  postgres  [vdso]                         [.] 0x00007fff59744890                 
            |          
            |--11.36%-- 0x7fff5974481f
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--10.37%-- 0x7fff597448d4
            |          __gettimeofday
            |          
            |--8.76%-- 0x7fff5974482a
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--4.87%-- 0x7fff59744814
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--4.87%-- 0x7fff59744830
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--4.55%-- 0x7fff597448db
            |          __gettimeofday
            |          
            |--3.89%-- 0x7fff5974489b
            |          __gettimeofday
            |          
            |--3.57%-- 0x7fff597448df
            |          __gettimeofday
            |          
            |--3.25%-- 0x7fff5974480a
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--3.25%-- 0x7fff597447d7
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--2.97%-- 0x7fff59744890
            |          
            |--2.92%-- 0x7fff59744826
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--2.60%-- 0x7fff597447d1
            |          __gettimeofday
            |          
            |--2.60%-- 0x7fff597448bc
            |          __gettimeofday
            |          
            |--2.27%-- 0x7fff597447fc
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--2.27%-- 0x7fff5974483d
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--2.27%-- 0x7fff597448b2
            |          __gettimeofday
            |          
            |--1.95%-- 0x7fff59744872
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--1.95%-- 0x7fff597448cd
            |          __gettimeofday
            |          
            |--1.95%-- 0x7fff597448e9
            |          __gettimeofday
            |          
            |--1.62%-- 0x7fff597447d0
            |          __gettimeofday
            |          
            |--1.62%-- 0x7fff597447d6
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--1.30%-- 0x7fff59744806
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--1.30%-- 0x7fff597448d1
            |          __gettimeofday
            |          
            |--1.30%-- 0x7fff59744811
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--1.30%-- 0x7fff597448c0
            |          __gettimeofday
            |          
            |--1.30%-- 0x7fff597448d8
            |          __gettimeofday
            |          
            |--0.97%-- 0x7fff597447e4
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--0.97%-- 0x7fff597447ee
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--0.97%-- 0x7fff5974486a
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--0.65%-- 0x7fff597448b0
            |          __gettimeofday
            |          
            |--0.65%-- 0x7fff59744873
            |          __gettimeofday
             --3.57%-- [...]

     1.13%  postgres  postgres                       [.] heap_parallelscan_nextpage         
            |
            --- heap_parallelscan_nextpage

     1.12%  postgres  postgres                       [.] ExecQual                           
            |
            --- ExecQual

     1.12%  postgres  postgres                       [.] do_numeric_accum                   
            |
            --- do_numeric_accum
               |          
               |--88.39%-- 0x0
                --11.61%-- [...]

     1.06%  postgres  postgres                       [.] PinBuffer                          
            |
            --- PinBuffer

     1.02%  postgres  postgres                       [.] StrategyGetBuffer                  
            |
            --- StrategyGetBuffer

     1.01%  postgres  postgres                       [.] advance_aggregates                 
            |
            --- advance_aggregates

     0.92%  postgres  postgres                       [.] heap_page_prune_opt                
            |
            --- heap_page_prune_opt

     0.83%  postgres  postgres                       [.] SetLatch                           
            |
            --- SetLatch

     0.80%  postgres  postgres                       [.] ExecEvalScalarVarFast              
            |
            --- ExecEvalScalarVarFast

     0.80%  postgres  postgres                       [.] heapgetpage                        
            |
            --- heapgetpage

     0.79%  postgres  postgres                       [.] int64_to_numericvar                
            |
            --- int64_to_numericvar

     0.78%  postgres  postgres                       [.] ExecClearTuple                     
            |
            --- ExecClearTuple

     0.73%  postgres  postgres                       [.] ExecStoreTuple                     
            |
            --- ExecStoreTuple

     0.73%  postgres  postgres                       [.] advance_transition_function        
            |
            --- advance_transition_function

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

     0.66%  postgres  postgres                       [.] ExecAgg                            
            |
            --- ExecAgg

     0.65%  postgres  postgres                       [.] ExecEvalConst                      
            |
            --- ExecEvalConst

     0.62%  postgres  postgres                       [.] pg_detoast_datum_packed            
            |
            --- pg_detoast_datum_packed

     0.58%  postgres  postgres                       [.] pfree                              
            |
            --- pfree

     0.56%  postgres  postgres                       [.] slot_getsomeattrs                  
            |
            --- slot_getsomeattrs

     0.52%  postgres  postgres                       [.] palloc                             
            |
            --- palloc
               |          
               |--8.03%-- networkjoinsel
                --91.97%-- [...]

     0.52%  postgres  postgres                       [.] init_var_from_num                  
            |
            --- init_var_from_num
               |          
               |--60.29%-- 0x0
               |          
                --39.71%-- slot_getsomeattrs

     0.51%  postgres  [kernel.kallsyms]              [k] find_get_page                      
            |
            --- find_get_page
               |          
               |--98.50%-- generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
               |--0.75%-- find_lock_page
               |          shmem_getpage_gfp
               |          shmem_fault
               |          __do_fault
               |          handle_pte_fault
               |          handle_mm_fault
               |          __do_page_fault
               |          do_page_fault
               |          page_fault
               |          memcpy
               |          networkjoinsel
               |          
                --0.75%-- do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.50%  postgres  postgres                       [.] ExecStoreMinimalTuple              
            |
            --- ExecStoreMinimalTuple

     0.49%  postgres  postgres                       [.] AllocSetFree                       
            |
            --- AllocSetFree

     0.47%  postgres  postgres                       [.] LWLockRelease                      
            |
            --- LWLockRelease

     0.46%  postgres  postgres                       [.] execTuplesMatch                    
            |
            --- execTuplesMatch

     0.46%  postgres  postgres                       [.] AllocSetReset                      
            |
            --- AllocSetReset

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

     0.41%  postgres  postgres                       [.] UnpinBuffer.clone.0                
            |
            --- UnpinBuffer.clone.0

     0.39%  postgres  postgres                       [.] int8_avg_accum                     
            |
            --- int8_avg_accum

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

     0.38%  postgres  postgres                       [.] TupleHashTableHash                 
            |
            --- TupleHashTableHash
               |          
               |--22.14%-- 0x1d72000
                --77.86%-- [...]

     0.37%  postgres  postgres                       [.] PartialSeqNext                     
            |
            --- PartialSeqNext

     0.34%  postgres  postgres                       [.] int4_sum                           
            |
            --- int4_sum

     0.33%  postgres  postgres                       [.] pgstat_end_function_usage          
            |
            --- pgstat_end_function_usage
               |          
               |--2.32%-- 0xc285e00497ac1
               |          
               |--2.32%-- 0xc281c00497ac1
               |          
               |--1.16%-- 0x122a6f00497ac1
               |          
               |--1.16%-- 0x1043de00497ac1
               |          
               |--1.16%-- 0x14f63400497ac1
               |          
               |--1.16%-- 0x105ed100497ac1
               |          
               |--1.16%-- 0xe76a200497ac1
               |          
               |--1.16%-- 0xdd3000497ac1
               |          
               |--1.16%-- 0x1368a200497ac1
               |          
               |--1.16%-- 0x69c9f00497ac1
               |          
               |--1.16%-- 0xf23d900497ac1
               |          
               |--1.16%-- 0xb006400497ac1
               |          
               |--1.16%-- 0x1563b100497ac1
               |          
               |--1.16%-- 0x93f8600497ac1
               |          
               |--1.16%-- 0x53eab00497ac1
               |          
               |--1.16%-- 0x15c92900497ac1
               |          
               |--1.16%-- 0x324e000497ac1
               |          
               |--1.16%-- 0xaa13a00497ac1
               |          
               |--1.16%-- 0xb5bea00497ac1
               |          
               |--1.16%-- 0x17387c00497ac1
               |          
               |--1.16%-- 0xe63400497ac1
               |          
               |--1.16%-- 0x4a53c00497ac1
               |          
               |--1.16%-- 0x14615000497ac1
               |          
               |--1.16%-- 0x841c300497ac1
               |          
               |--1.16%-- 0x8676200497ac1
               |          
               |--1.16%-- 0xa73c00497ac1
               |          
               |--1.16%-- 0xf3d4d00497ac1
               |          
               |--1.16%-- 0x457d900497ac1
               |          
               |--1.16%-- 0xa056900497ac1
               |          
               |--1.16%-- 0x141b900497ac1
               |          
               |--1.16%-- 0x3bc7700497ac1
               |          
               |--1.16%-- 0xc286400497ac1
               |          
               |--1.16%-- 0xd70a700497ac1
               |          
               |--1.16%-- 0xc286100497ac1
               |          
               |--1.16%-- 0xc284f00497ac1
               |          
               |--1.16%-- 0x6b77b00497ac1
               |          
               |--1.16%-- 0xc285900497ac1
               |          
               |--1.16%-- 0xc286300497ac1
               |          
               |--1.16%-- 0xc285c00497ac1
               |          
               |--1.16%-- 0xc280600497ac1
               |          
               |--1.16%-- 0xc283400497ac1
                --50.00%-- [...]

     0.33%  postgres  postgres                       [.] alloc_var                          
            |
            --- alloc_var

     0.30%  postgres  [kernel.kallsyms]              [k] put_page                           
            |
            --- put_page
               |          
               |--98.74%-- generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --1.26%-- do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.30%  postgres  postgres                       [.] FunctionCall2Coll                  
            |
            --- FunctionCall2Coll

     0.29%  postgres  postgres                       [.] pgstat_init_function_usage         
            |
            --- pgstat_init_function_usage

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

     0.27%  postgres  postgres                       [.] DirectFunctionCall1Coll            
            |
            --- DirectFunctionCall1Coll

     0.27%  postgres  postgres                       [.] LookupTupleHashEntry               
            |
            --- LookupTupleHashEntry
               |          
               |--69.01%-- 0x1d4108000000000
                --30.99%-- [...]

     0.27%  postgres  postgres                       [.] heap_copytuple                     
            |
            --- heap_copytuple
               |          
               |--87.13%-- networkjoinsel
                --12.87%-- [...]

     0.26%  postgres  postgres                       [.] MemoryContextReset                 
            |
            --- MemoryContextReset

     0.26%  postgres  postgres                       [.] hashbpchar                         
            |
            --- hashbpchar

     0.25%  postgres  [kernel.kallsyms]              [k] mutex_lock                         
            |
            --- mutex_lock
               |          
               |--98.46%-- ext4_llseek
               |          vfs_llseek
               |          sys_lseek
               |          system_call
               |          __GI___libc_lseek64
               |          
                --1.54%-- vfs_llseek
                          sys_lseek
                          system_call
                          __GI___libc_lseek64

     0.24%  postgres  postgres                       [.] int8_numeric                       
            |
            --- int8_numeric

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

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

     0.22%  postgres  postgres                       [.] add_var                            
            |
            --- add_var
               |          
               |--55.16%-- 0x0
                --44.84%-- [...]

     0.22%  postgres  [kernel.kallsyms]              [k] mutex_unlock                       
            |
            --- mutex_unlock
               |          
               |--98.27%-- ext4_llseek
               |          vfs_llseek
               |          sys_lseek
               |          system_call
               |          __GI___libc_lseek64
               |          
                --1.73%-- vfs_llseek
                          sys_lseek
                          system_call
                          __GI___libc_lseek64

     0.22%  postgres  libc-2.12.so                   [.] __gettimeofday                     
            |
            --- __gettimeofday

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

     0.21%  postgres  postgres                       [.] ExecProcNode                       
            |
            --- ExecProcNode

     0.21%  postgres  postgres                       [.] free_var                           
            |
            --- free_var

     0.20%  postgres  postgres                       [.] CheckForSerializableConflictOut    
            |
            --- CheckForSerializableConflictOut

     0.19%  postgres  postgres                       [.] FunctionCall1Coll                  
            |
            --- FunctionCall1Coll

     0.18%  postgres  postgres                       [.] lc_collate_is_c                    
            |
            --- lc_collate_is_c

     0.16%  postgres  postgres                       [.] ExecFunnel                         
            |
            --- ExecFunnel

     0.15%  postgres  [kernel.kallsyms]              [k] generic_file_aio_read              
            |
            --- generic_file_aio_read
                do_sync_read
                vfs_read
                sys_read
                system_call
                __GI___libc_read

     0.14%  postgres  [ext4]                         [k] ext4_llseek                        
            |
            --- ext4_llseek
               |          
               |--94.73%-- vfs_llseek
               |          sys_lseek
               |          system_call
               |          __GI___libc_lseek64
               |          
                --5.27%-- sys_lseek
                          system_call
                          __GI___libc_lseek64

     0.14%  postgres  [kernel.kallsyms]              [k] vfs_read                           
            |
            --- vfs_read
                sys_read
                system_call
                __GI___libc_read
               |          
               |--2.76%-- 0x72c4479b242c
                --97.24%-- [...]

     0.13%  postgres  postgres                       [.] GetPrivateRefCountEntry            
            |
            --- GetPrivateRefCountEntry

     0.13%  postgres  [kernel.kallsyms]              [k] radix_tree_lookup_slot             
            |
            --- radix_tree_lookup_slot
               |          
               |--91.43%-- find_get_page
               |          generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --8.57%-- generic_file_aio_read
                          do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.13%  postgres  postgres                       [.] ExecStoreVirtualTuple              
            |
            --- ExecStoreVirtualTuple

     0.13%  postgres  postgres                       [.] TupleHashTableMatch                
            |
            --- TupleHashTableMatch

     0.12%  postgres  postgres                       [.] TransactionIdPrecedes              
            |
            --- TransactionIdPrecedes

     0.12%  postgres  postgres                       [.] hash_search                        
            |
            --- hash_search
               |          
               |--56.43%-- 0x1d72000
               |          
               |--40.43%-- 0x1d4108000000000
               |          
                --3.14%-- 0x1d74de0

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

     0.11%  postgres  [kernel.kallsyms]              [k] system_call                        
            |
            --- system_call
               |          
               |--58.62%-- __GI___libc_lseek64
               |          
                --41.38%-- __GI___libc_read

     0.09%  postgres  [kernel.kallsyms]              [k] _spin_lock                         
            |
            --- _spin_lock
               |          
               |--43.46%-- thread_return
               |          sys_semtimedop
               |          sys_semop
               |          system_call
               |          __GI___semop
               |          
               |--13.06%-- scheduler_tick
               |          update_process_times
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--33.36%-- int4_sum
               |          |          
               |          |--33.33%-- make_result
               |          |          
               |           --33.31%-- heap_freetuple
               |          
               |--8.70%-- __mutex_unlock_slowpath
               |          mutex_unlock
               |          ext4_llseek
               |          vfs_llseek
               |          sys_lseek
               |          system_call
               |          __GI___libc_lseek64
               |          
               |--8.68%-- ipc_lock
               |          ipc_lock_check
               |          sys_semtimedop
               |          sys_semop
               |          system_call
               |          __GI___semop
               |          
               |--4.35%-- update_process_times
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          ExecMakeFunctionResultNoSets
               |          
               |--4.35%-- __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          ExecScan
               |          
               |--4.35%-- tick_do_update_jiffies64
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          heap_parallelscan_nextpage
               |          
               |--4.35%-- try_to_wake_up
               |          wake_up_process
               |          hrtimer_wakeup
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          varstr_cmp
               |          
               |--4.35%-- update_vsyscall
               |          timekeeping_update
               |          do_timer
               |          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
               |          
                --4.34%-- __percpu_counter_add
                          account_system_time
                          account_process_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

     0.08%  postgres  [kernel.kallsyms]              [k] touch_atime                        
            |
            --- touch_atime
               |          
               |--95.45%-- generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --4.55%-- do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.08%  postgres  [kernel.kallsyms]              [k] __audit_syscall_exit               
            |
            --- __audit_syscall_exit
                sysret_audit
               |          
               |--54.59%-- __GI___libc_lseek64
               |          
               |--36.30%-- __GI___libc_read
               |          
                --9.11%-- __GI___semop

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

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

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

     0.07%  postgres  [kernel.kallsyms]              [k] sys_read                           
            |
            --- sys_read
               |          
               |--73.68%-- system_call
               |          __GI___libc_read
               |          
                --26.32%-- __GI___libc_read

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

     0.06%  postgres  [kernel.kallsyms]              [k] sys_lseek                          
            |
            --- sys_lseek
               |          
               |--81.20%-- __GI___libc_lseek64
               |          
                --18.80%-- system_call
                          __GI___libc_lseek64

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

     0.06%  postgres  [kernel.kallsyms]              [k] audit_syscall_entry                
            |
            --- audit_syscall_entry
                auditsys
               |          
               |--73.31%-- __GI___libc_lseek64
               |          
                --26.69%-- __GI___libc_read

     0.05%  postgres  [kernel.kallsyms]              [k] sysret_check                       
            |
            --- sysret_check
               |          
               |--76.91%-- __GI___libc_read
               |          
                --23.09%-- __GI___libc_lseek64

     0.05%  postgres  [kernel.kallsyms]              [k] rw_verify_area                     
            |
            --- rw_verify_area
                vfs_read
                sys_read
                system_call
                __GI___libc_read

     0.05%  postgres  [kernel.kallsyms]              [k] file_read_actor                    
            |
            --- file_read_actor
               |          
               |--91.66%-- generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --8.34%-- do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.05%  postgres  libc-2.12.so                   [.] __GI___libc_read                   
            |
            --- __GI___libc_read

     0.04%  postgres  [kernel.kallsyms]              [k] rcu_process_gp_end                 
            |
            --- rcu_process_gp_end
               |          
               |--90.91%-- __rcu_process_callbacks
               |          rcu_process_callbacks
               |          __do_softirq
               |          call_softirq
               |          do_softirq
               |          irq_exit
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--10.01%-- ExecEvalConst
               |          |          
               |          |--10.01%-- bcTruelen
               |          |          
               |          |--10.01%-- hash_any
               |          |          
               |          |--10.01%-- HeapTupleSatisfiesMVCC
               |          |          
               |          |--10.01%-- bpchareq
               |          |          
               |          |--10.00%-- IncrBufferRefCount
               |          |          
               |          |--10.00%-- ExecClearTuple
               |          |          
               |          |--10.00%-- slot_deform_tuple
               |          |          
               |          |--10.00%-- hash_search_with_hash_value
               |          |          
               |           --9.95%-- file_read_actor
               |                     generic_file_aio_read
               |                     do_sync_read
               |                     vfs_read
               |                     sys_read
               |                     system_call
               |                     __GI___libc_read
               |          
                --9.09%-- rcu_process_callbacks
                          __do_softirq
                          call_softirq
                          do_softirq
                          irq_exit
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          bpchareq

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

     0.04%  postgres  [kernel.kallsyms]              [k] vfs_llseek                         
            |
            --- vfs_llseek
                sys_lseek
                system_call
                __GI___libc_lseek64

     0.04%  postgres  [kernel.kallsyms]              [k] fget_light                         
            |
            --- fget_light
               |          
               |--50.07%-- sys_lseek
               |          system_call
               |          __GI___libc_lseek64
               |          
                --49.93%-- sys_read
                          system_call
                          __GI___libc_read

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

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

     0.03%  postgres  [kernel.kallsyms]              [k] unroll_tree_refs                   
            |
            --- unroll_tree_refs
               |          
               |--77.77%-- __audit_syscall_exit
               |          sysret_audit
               |          |          
               |          |--71.46%-- __GI___libc_lseek64
               |          |          
               |           --28.54%-- __GI___libc_read
               |          
                --22.23%-- sysret_audit
                          __GI___libc_read

     0.03%  postgres  [kernel.kallsyms]              [k] scheduler_tick                     
            |
            --- scheduler_tick
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--11.13%-- add_abs
               |          
               |--11.13%-- LWLockAcquire
               |          
               |--11.13%-- ExecEvalScalarVarFast
               |          
               |--11.13%-- ReadBufferExtended
               |          
               |--11.13%-- ExecMakeFunctionResultNoSets
               |          
               |--11.13%-- slot_deform_tuple
               |          
               |--11.13%-- shm_mq_receive_bytes
               |          
               |--11.12%-- shm_mq_inc_bytes_read
               |          
                --10.96%-- UnpinBuffer.clone.0

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

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

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

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

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

     0.03%  postgres  [kernel.kallsyms]              [k] __mutex_lock_slowpath              
            |
            --- __mutex_lock_slowpath
               |          
               |--85.74%-- mutex_lock
               |          ext4_llseek
               |          vfs_llseek
               |          sys_lseek
               |          system_call
               |          __GI___libc_lseek64
               |          
                --14.26%-- ext4_llseek
                          vfs_llseek
                          sys_lseek
                          system_call
                          __GI___libc_lseek64

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

     0.03%  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
               |          
               |--14.49%-- int8_avg_accum
               |          
               |--14.48%-- heap_parallelscan_nextpage
               |          
               |--14.47%-- palloc
               |          
               |--14.46%-- varstr_cmp
               |          
               |--14.46%-- file_read_actor
               |          generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
               |--14.43%-- ExecMakeFunctionResultNoSets
               |          
                --13.20%-- int8_numeric

     0.02%  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
               |          
               |--66.89%-- ftrace_raw_event_id_softirq
               |          |          
               |          |--75.00%-- ftrace_raw_event_softirq_exit
               |          |          __do_softirq
               |          |          call_softirq
               |          |          do_softirq
               |          |          irq_exit
               |          |          smp_apic_timer_interrupt
               |          |          apic_timer_interrupt
               |          |          |          
               |          |          |--33.34%-- bpcharle
               |          |          |          
               |          |          |--33.33%-- AllocSetAlloc
               |          |          |          
               |          |           --33.33%-- hash_any
               |          |          
               |           --25.00%-- ftrace_raw_event_softirq_entry
               |                     __do_softirq
               |                     call_softirq
               |                     do_softirq
               |                     irq_exit
               |                     smp_apic_timer_interrupt
               |                     apic_timer_interrupt
               |                     hash_search
               |          
               |--16.58%-- ftrace_raw_event_sched_stat_runtime
               |          update_curr
               |          put_prev_task_fair
               |          schedule
               |          sys_semtimedop
               |          sys_semop
               |          system_call
               |          __GI___semop
               |          
                --16.53%-- 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
                          add_abs

     0.02%  postgres  [kernel.kallsyms]              [k] _spin_lock_irqsave                 
            |
            --- _spin_lock_irqsave
               |          
               |--83.27%-- __rcu_process_callbacks
               |          rcu_process_callbacks
               |          __do_softirq
               |          call_softirq
               |          do_softirq
               |          irq_exit
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--20.10%-- UnpinBuffer.clone.0
               |          |          
               |          |--20.00%-- advance_aggregates
               |          |          
               |          |--19.99%-- hash_search_with_hash_value
               |          |          
               |          |--19.97%-- ExecMakeFunctionResultNoSets
               |          |          
               |           --19.93%-- int64_to_numericvar
               |          
                --16.73%-- ntp_tick_length
                          do_timer
                          tick_do_update_jiffies64
                          tick_sched_timer
                          __run_hrtimer
                          hrtimer_interrupt
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          HeapTupleSatisfiesMVCC

     0.02%  postgres  [kernel.kallsyms]              [k] apic_timer_interrupt               
            |
            --- apic_timer_interrupt
               |          
               |--20.01%-- ExecStoreVirtualTuple
               |          
               |--20.00%-- hash_search
               |          
               |--20.00%-- heap_getnext
               |          
               |--20.00%-- HeapTupleSatisfiesMVCC
               |          
                --20.00%-- hash_search_with_hash_value

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

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

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

     0.02%  postgres  [kernel.kallsyms]              [k] _cond_resched                      
            |
            --- _cond_resched
               |          
               |--60.01%-- generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
               |--20.00%-- do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --19.99%-- ext4_llseek
                          vfs_llseek
                          sys_lseek
                          system_call
                          __GI___libc_lseek64

     0.02%  postgres  libc-2.12.so                   [.] __GI___libc_lseek64                
            |
            --- __GI___libc_lseek64

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

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

     0.02%  postgres  [kernel.kallsyms]              [k] mark_page_accessed                 
            |
            --- mark_page_accessed
               |          
               |--79.96%-- generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --20.04%-- do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

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

     0.02%  postgres  postgres                       [.] gettimeofday@plt                   
            |
            --- gettimeofday@plt

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

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

     0.02%  postgres  [kernel.kallsyms]              [k] ring_buffer_lock_reserve           
            |
            --- ring_buffer_lock_reserve
                trace_buffer_lock_reserve
                trace_current_buffer_lock_reserve
               |          
               |--74.99%-- ftrace_raw_event_id_softirq
               |          |          
               |          |--66.67%-- ftrace_raw_event_softirq_raise
               |          |          raise_softirq
               |          |          |          
               |          |          |--50.01%-- run_local_timers
               |          |          |          update_process_times
               |          |          |          tick_sched_timer
               |          |          |          __run_hrtimer
               |          |          |          hrtimer_interrupt
               |          |          |          smp_apic_timer_interrupt
               |          |          |          apic_timer_interrupt
               |          |          |          heap_getnext
               |          |          |          
               |          |           --49.99%-- rcu_check_callbacks
               |          |                     update_process_times
               |          |                     tick_sched_timer
               |          |                     __run_hrtimer
               |          |                     hrtimer_interrupt
               |          |                     smp_apic_timer_interrupt
               |          |                     apic_timer_interrupt
               |          |                     LWLockAcquire
               |          |          
               |           --33.33%-- ftrace_raw_event_softirq_entry
               |                     __do_softirq
               |                     call_softirq
               |                     do_softirq
               |                     irq_exit
               |                     smp_apic_timer_interrupt
               |                     apic_timer_interrupt
               |                     int8_avg_accum
               |          
                --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
                          slot_deform_tuple

     0.02%  postgres  [kernel.kallsyms]              [k] exit_idle                          
            |
            --- exit_idle
               |          
               |--50.01%-- apic_timer_interrupt
               |          |          
               |          |--50.04%-- advance_transition_function
               |          |          
               |           --49.96%-- find_get_page
               |                     generic_file_aio_read
               |                     do_sync_read
               |                     vfs_read
               |                     sys_read
               |                     system_call
               |                     __GI___libc_read
               |          
                --49.99%-- smp_apic_timer_interrupt
                          apic_timer_interrupt
                          |          
                          |--50.04%-- bpcharle
                          |          
                           --49.96%-- pgstat_end_function_usage

     0.02%  postgres  [kernel.kallsyms]              [k] path_put                           
            |
            --- path_put
               |          
               |--50.02%-- __audit_syscall_exit
               |          sysret_audit
               |          __GI___libc_lseek64
               |          
                --49.98%-- sysret_audit
                          |          
                          |--50.03%-- __GI___libc_read
                          |          
                           --49.97%-- __GI___libc_lseek64

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

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

     0.02%  postgres  [kernel.kallsyms]              [k] inotify_inode_queue_event          
            |
            --- inotify_inode_queue_event
                vfs_read
                sys_read
                system_call
                __GI___libc_read

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

     0.02%  postgres  [kernel.kallsyms]              [k] kfree                              
            |
            --- kfree
                __audit_syscall_exit
                sysret_audit
               |          
               |--50.05%-- __GI___libc_read
               |          
                --49.95%-- __GI___libc_lseek64

     0.02%  postgres  [kernel.kallsyms]              [k] __mutex_unlock_slowpath            
            |
            --- __mutex_unlock_slowpath
                mutex_unlock
                ext4_llseek
                vfs_llseek
                sys_lseek
                system_call
                __GI___libc_lseek64

     0.02%  postgres  [kernel.kallsyms]              [k] trace_clock_local                  
            |
            --- trace_clock_local
               |          
               |--75.30%-- rb_reserve_next_event
               |          ring_buffer_lock_reserve
               |          trace_buffer_lock_reserve
               |          trace_current_buffer_lock_reserve
               |          |          
               |          |--66.66%-- ftrace_raw_event_id_softirq
               |          |          |          
               |          |          |--50.01%-- 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
               |          |          |          
               |          |           --49.99%-- ftrace_raw_event_softirq_exit
               |          |                     __do_softirq
               |          |                     call_softirq
               |          |                     do_softirq
               |          |                     irq_exit
               |          |                     smp_apic_timer_interrupt
               |          |                     apic_timer_interrupt
               |          |                     shm_mq_inc_bytes_read
               |          |          
               |           --33.34%-- ftrace_raw_event_id_sched_wakeup_template
               |                     ftrace_raw_event_sched_wakeup
               |                     try_to_wake_up
               |                     wake_up_process
               |                     update_queue
               |                     sys_semtimedop
               |                     sys_semop
               |                     system_call
               |                     __GI___semop
               |          
                --24.70%-- ring_buffer_lock_reserve
                          trace_buffer_lock_reserve
                          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
                          slot_getattr

     0.01%  postgres  [kernel.kallsyms]              [k] __do_page_fault                    
            |
            --- __do_page_fault
                do_page_fault
                page_fault
                _int_malloc

     0.01%  postgres  [kernel.kallsyms]              [k] tracing_generic_entry_update       
            |
            --- tracing_generic_entry_update
                trace_current_buffer_lock_reserve
                ftrace_raw_event_id_softirq
               |          
               |--66.67%-- ftrace_raw_event_softirq_exit
               |          __do_softirq
               |          call_softirq
               |          do_softirq
               |          irq_exit
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--50.02%-- heap_getnext
               |          |          
               |           --49.98%-- slot_deform_tuple
               |          
                --33.33%-- 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
                          ExecEvalConst

     0.01%  postgres  [kernel.kallsyms]              [k] run_timer_softirq                  
            |
            --- run_timer_softirq
               |          
               |--66.67%-- __do_softirq
               |          call_softirq
               |          do_softirq
               |          irq_exit
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--50.01%-- HeapTupleSatisfiesMVCC
               |          |          
               |           --49.99%-- slot_getattr
               |          
                --33.33%-- call_softirq
                          do_softirq
                          irq_exit
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          ExecMakeFunctionResultNoSets

     0.01%  postgres  [kernel.kallsyms]              [k] __rcu_pending                      
            |
            --- __rcu_pending
               |          
               |--66.68%-- rcu_check_callbacks
               |          update_process_times
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--50.01%-- shm_mq_inc_bytes_read
               |          |          
               |           --49.99%-- make_result
               |          
                --33.32%-- update_process_times
                          tick_sched_timer
                          __run_hrtimer
                          hrtimer_interrupt
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          ExecProject

     0.01%  postgres  [kernel.kallsyms]              [k] update_cfs_load                    
            |
            --- update_cfs_load
                task_tick_fair
                scheduler_tick
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--33.35%-- HeapTupleSatisfiesMVCC
               |          
               |--33.34%-- hash_search_with_hash_value
               |          
                --33.32%-- s_lock

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

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

     0.01%  postgres  [kernel.kallsyms]              [k] raise_softirq                      
            |
            --- raise_softirq
               |          
               |--66.65%-- run_local_timers
               |          update_process_times
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--50.06%-- advance_transition_function
               |          |          
               |           --49.94%-- file_read_actor
               |                     generic_file_aio_read
               |                     do_sync_read
               |                     vfs_read
               |                     sys_read
               |                     system_call
               |                     __GI___libc_read
               |          
                --33.35%-- rcu_check_callbacks
                          update_process_times
                          tick_sched_timer
                          __run_hrtimer
                          hrtimer_interrupt
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          ExecMakeFunctionResultNoSets

     0.01%  postgres  [kernel.kallsyms]              [k] update_curr                        
            |
            --- update_curr
               |          
               |--33.35%-- scheduler_tick
               |          update_process_times
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          add_abs
               |          
               |--33.34%-- task_tick_fair
               |          scheduler_tick
               |          update_process_times
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          pg_detoast_datum_packed
               |          
                --33.31%-- put_prev_task_fair
                          schedule
                          sys_semtimedop
                          sys_semop
                          system_call
                          __GI___semop

     0.01%  postgres  [kernel.kallsyms]              [k] native_apic_mem_write              
            |
            --- native_apic_mem_write
               |          
               |--33.35%-- smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          bpcharle
               |          
               |--33.35%-- clockevents_program_event
               |          tick_dev_program_event
               |          tick_program_event
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          slot_deform_tuple
               |          
                --33.29%-- apic_timer_interrupt
                          ExecMakeFunctionResultNoSets

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

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

     0.01%  postgres  [kernel.kallsyms]              [k] tick_sched_timer                   
            |
            --- tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--33.37%-- ExecStoreVirtualTuple
               |          
               |--33.34%-- memcpy
               |          
                --33.29%-- s_lock

     0.01%  postgres  [kernel.kallsyms]              [k] __do_softirq                       
            |
            --- __do_softirq
                call_softirq
                do_softirq
                irq_exit
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--33.37%-- ReadBuffer_common
               |          
               |--33.36%-- ExecQual
               |          
                --33.27%-- memcpy

     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
               |          
               |--33.41%-- slot_getattr
               |          
               |--33.39%-- hash_any
               |          
                --33.19%-- check_stack_depth

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

     0.01%  postgres  [kernel.kallsyms]              [k] ftrace_raw_event_id_softirq        
            |
            --- ftrace_raw_event_id_softirq
               |          
               |--65.64%-- ftrace_raw_event_softirq_raise
               |          raise_softirq
               |          |          
               |          |--52.32%-- rcu_check_callbacks
               |          |          update_process_times
               |          |          tick_sched_timer
               |          |          __run_hrtimer
               |          |          hrtimer_interrupt
               |          |          smp_apic_timer_interrupt
               |          |          apic_timer_interrupt
               |          |          LookupTupleHashEntry
               |          |          
               |           --47.68%-- run_local_timers
               |                     update_process_times
               |                     tick_sched_timer
               |                     __run_hrtimer
               |                     hrtimer_interrupt
               |                     smp_apic_timer_interrupt
               |                     apic_timer_interrupt
               |                     ExecEvalScalarVarFast
               |          
                --34.36%-- ftrace_raw_event_softirq_exit
                          __do_softirq
                          call_softirq
                          do_softirq
                          irq_exit
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          do_numeric_accum

     0.01%  postgres  [kernel.kallsyms]              [k] native_write_msr_safe              
            |
            --- native_write_msr_safe
               |          
               |--99.83%-- 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
               |          |          
               |          |--50.04%-- shm_mq_inc_bytes_read
               |          |          
               |           --49.96%-- palloc
                --0.17%-- [...]

     0.01%  postgres  postgres                       [.] memcpy@plt                         
            |
            --- memcpy@plt
                networkjoinsel

     0.01%  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
               |          
               |--50.01%-- ExecScan
               |          
                --49.99%-- bcTruelen

     0.01%  postgres  [kernel.kallsyms]              [k] ring_buffer_unlock_commit          
            |
            --- ring_buffer_unlock_commit
                trace_nowake_buffer_unlock_commit
                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
               |          init_var_from_num
               |          
                --50.00%-- ftrace_raw_event_softirq_entry
                          __do_softirq
                          call_softirq
                          do_softirq
                          irq_exit
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          vread_tsc

     0.01%  postgres  [kernel.kallsyms]              [k] call_softirq                       
            |
            --- call_softirq
               |          
               |--50.02%-- irq_exit
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          memcpy
               |          
                --49.98%-- do_softirq
                          irq_exit
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          HeapTupleSatisfiesMVCC

     0.01%  postgres  [kernel.kallsyms]              [k] filter_current_check_discard       
            |
            --- filter_current_check_discard
               |          
               |--50.01%-- 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
               |          0x7fff59744826
               |          
                --49.99%-- 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
                          ReadBuffer_common

     0.01%  postgres  [kernel.kallsyms]              [k] native_read_tsc                    
            |
            --- native_read_tsc
                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
               |          
               |--50.00%-- 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_any
               |          
                --50.00%-- 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

     0.01%  postgres  [kernel.kallsyms]              [k] save_args                          
            |
            --- save_args
               |          
               |--50.03%-- varstr_cmp
               |          
                --49.97%-- do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.01%  postgres  [kernel.kallsyms]              [k] rcu_process_callbacks              
            |
            --- rcu_process_callbacks
                __do_softirq
                call_softirq
                do_softirq
                irq_exit
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--50.01%-- varstr_cmp
               |          
                --49.99%-- make_result

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

     0.01%  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
               |          
               |--50.02%-- ExecStoreMinimalTuple
               |          
                --49.98%-- shm_mq_receive_bytes

     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
               |          
               |--50.02%-- rcu_check_callbacks
               |          update_process_times
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          int64_to_numericvar
               |          
                --49.98%-- run_local_timers
                          update_process_times
                          tick_sched_timer
                          __run_hrtimer
                          hrtimer_interrupt
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          LWLockAcquire

     0.01%  postgres  [kernel.kallsyms]              [k] auditsys                           
            |
            --- auditsys
                __GI___libc_lseek64

     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
               |          
               |--50.04%-- LWLockAcquire
               |          
                --49.96%-- hash_search_with_hash_value

     0.01%  postgres  [kernel.kallsyms]              [k] do_softirq                         
            |
            --- do_softirq
               |          
               |--50.03%-- irq_exit
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          slot_getsomeattrs
               |          
                --49.97%-- smp_apic_timer_interrupt
                          apic_timer_interrupt
                          slot_getattr

     0.01%  postgres  [kernel.kallsyms]              [k] thread_return                      
            |
            --- thread_return
                sys_semtimedop
                sys_semop
                system_call
                __GI___semop

     0.01%  postgres  [kernel.kallsyms]              [k] dput                               
            |
            --- dput
                path_put
                __audit_syscall_exit
                sysret_audit
               |          
               |--50.01%-- __GI___libc_lseek64
               |          
                --49.99%-- __GI___libc_read

     0.01%  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%-- HeapTupleSatisfiesMVCC
               |          
                --49.97%-- vread_tsc

     0.01%  postgres  [kernel.kallsyms]              [k] inotify_dentry_parent_queue_event  
            |
            --- inotify_dentry_parent_queue_event
               |          
               |--50.02%-- sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --49.98%-- vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

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

     0.01%  postgres  [kernel.kallsyms]              [k] sys_semtimedop                     
            |
            --- sys_semtimedop
                sys_semop
                system_call
                __GI___semop

     0.01%  postgres  [kernel.kallsyms]              [k] native_sched_clock                 
            |
            --- 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
               |          
               |--50.02%-- 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
               |          file_read_actor
               |          generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --49.98%-- ftrace_raw_event_sched_stat_runtime
                          update_curr
                          dequeue_entity
                          dequeue_task_fair
                          dequeue_task
                          deactivate_task
                          thread_return
                          sys_semtimedop
                          sys_semop
                          system_call
                          __GI___semop

     0.01%  postgres  [kernel.kallsyms]              [k] update_queue                       
            |
            --- update_queue
                sys_semtimedop
                sys_semop
                system_call
                __GI___semop

     0.01%  postgres  [kernel.kallsyms]              [k] printk_tick                        
            |
            --- printk_tick
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--50.10%-- hash_search_with_hash_value
               |          
                --49.90%-- ExecClearTuple

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

     0.01%  postgres  [kernel.kallsyms]              [k] find_busiest_group                 
            |
            --- find_busiest_group
                thread_return
                sys_semtimedop
                sys_semop
                system_call
                __GI___semop

     0.01%  postgres  [kernel.kallsyms]              [k] update_cfs_shares                  
            |
            --- update_cfs_shares
               |          
               |--50.17%-- task_tick_fair
               |          scheduler_tick
               |          update_process_times
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          ExecMakeFunctionResultNoSets
               |          
                --49.83%-- scheduler_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] page_evictable                     
            |
            --- page_evictable
                handle_pte_fault
                handle_mm_fault
                __do_page_fault
                do_page_fault
                page_fault
                AllocSetAlloc

     0.00%  postgres  [kernel.kallsyms]              [k] update_context_time                
            |
            --- update_context_time
                __perf_event_task_sched_out
                perf_event_task_sched_out
                schedule
                schedule_hrtimeout_range
                poll_schedule_timeout
                do_select
                core_sys_select
                sys_select
                system_call
                __select

     0.00%  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
                ExecEvalConst

     0.00%  postgres  [ixgbe]                        [k] ixgbe_poll                         
            |
            --- ixgbe_poll
                net_rx_action
                __do_softirq
                call_softirq
                do_softirq
                irq_exit
                do_IRQ
                ret_from_intr
                ExecProject

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

     0.00%  postgres  [kernel.kallsyms]              [k] hrtimer_forward                    
            |
            --- hrtimer_forward
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                varstr_cmp

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

     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
                ExecQual

     0.00%  postgres  [kernel.kallsyms]              [k] update_rq_clock                    
            |
            --- update_rq_clock
                scheduler_tick
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                bpcharle

     0.00%  postgres  [kernel.kallsyms]              [k] trace_recursive_unlock             
            |
            --- trace_recursive_unlock
                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
                GetPrivateRefCountEntry

     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
                ExecProject

     0.00%  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
                0x7fff597448d8

     0.00%  postgres  [kernel.kallsyms]              [k] rb_next                            
            |
            --- rb_next
                __remove_hrtimer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                heap_getnext

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

     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
                check_stack_depth

     0.00%  postgres  [kernel.kallsyms]              [k] resched_task                       
            |
            --- resched_task
                check_preempt_curr
                try_to_wake_up
                wake_up_process
                hrtimer_wakeup
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                shm_mq_receive_bytes

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

     0.00%  postgres  [kernel.kallsyms]              [k] account_cfs_rq_runtime             
            |
            --- account_cfs_rq_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
                memcpy

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

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

     0.00%  postgres  [kernel.kallsyms]              [k] __fsnotify_parent                  
            |
            --- __fsnotify_parent
                vfs_read
                sys_read
                system_call
                __GI___libc_read

     0.00%  postgres  [kernel.kallsyms]              [k] ktime_get                          
            |
            --- ktime_get
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                slot_deform_tuple

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

     0.00%  postgres  [kernel.kallsyms]              [k] task_rq_lock                       
            |
            --- task_rq_lock
                try_to_wake_up
                wake_up_process
                update_queue
                sys_semtimedop
                sys_semop
                system_call
                __GI___semop

     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
                bpcharle

     0.00%  postgres  [kernel.kallsyms]              [k] irq_exit                           
            |
            --- irq_exit
                apic_timer_interrupt
                shm_mq_inc_bytes_read

     0.00%  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
                memcpy

     0.00%  postgres  [kernel.kallsyms]              [k] _spin_lock_irq                     
            |
            --- _spin_lock_irq
                run_timer_softirq
                __do_softirq
                call_softirq
                do_softirq
                irq_exit
                smp_apic_timer_interrupt
                apic_timer_interrupt
                heap_parallelscan_nextpage

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

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

     0.00%  postgres  [kernel.kallsyms]              [k] __alloc_pages_nodemask             
            |
            --- __alloc_pages_nodemask
                alloc_pages_vma
                handle_pte_fault
                handle_mm_fault
                __do_page_fault
                do_page_fault
                page_fault
                palloc0

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

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

     0.00%  postgres  [kernel.kallsyms]              [k] dequeue_task                       
            |
            --- dequeue_task
                deactivate_task
                thread_return
                sys_semtimedop
                sys_semop
                system_call
                __GI___semop

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

     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
                ExecProject

     0.00%  postgres  [kernel.kallsyms]              [k] perf_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
                heapgetpage

     0.00%  postgres  [kernel.kallsyms]              [k] cap_file_permission                
            |
            --- cap_file_permission
                security_file_permission
                rw_verify_area
                vfs_read
                sys_read
                system_call
                __GI___libc_read

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

     0.00%  postgres  postgres                       [.] palloc0                            
            |
            --- palloc0

     0.00%  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
                ftrace_raw_event_sched_stat_runtime
                update_curr
                enqueue_entity
                enqueue_task_fair
                enqueue_task
                activate_task
                try_to_wake_up
                wake_up_process
                update_queue
                sys_semtimedop
                sys_semop
                system_call
                __GI___semop

     0.00%  postgres  [kernel.kallsyms]              [k] _spin_trylock                      
            |
            --- _spin_trylock
                force_quiescent_state
                __rcu_process_callbacks
                rcu_process_callbacks
                __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] fsnotify                           
            |
            --- fsnotify
                sys_read
                system_call
                __GI___libc_read

     0.00%  postgres  [kernel.kallsyms]              [k] ftrace_raw_event_sched_stat_runtime
            |
            --- ftrace_raw_event_sched_stat_runtime
                update_curr
                dequeue_entity
                dequeue_task_fair
                dequeue_task
                deactivate_task
                thread_return
                sys_semtimedop
                sys_semop
                system_call
                __GI___semop

     0.00%  postgres  [kernel.kallsyms]              [k] trace_buffer_lock_reserve          
            |
            --- trace_buffer_lock_reserve
                trace_current_buffer_lock_reserve
                ftrace_raw_event_id_sched_wakeup_template
                ftrace_raw_event_sched_wakeup
                try_to_wake_up
                wake_up_process
                update_queue
                sys_semtimedop
                sys_semop
                system_call
                __GI___semop

     0.00%  postgres  [kernel.kallsyms]              [k] hrtick_start_fair                  
            |
            --- hrtick_start_fair
                dequeue_task_fair
                dequeue_task
                deactivate_task
                thread_return
                sys_semtimedop
                sys_semop
                system_call
                __GI___semop

     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
                pg_detoast_datum_packed

     0.00%  postgres  [kernel.kallsyms]              [k] schedule                           
            |
            --- schedule
                sys_semtimedop
                sys_semop
                system_call
                __GI___semop

     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
                s_lock

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

     0.00%  postgres  [kernel.kallsyms]              [k] current_kernel_time                
            |
            --- current_kernel_time
                audit_syscall_entry
                auditsys
                __GI___libc_read

     0.00%  postgres  [kernel.kallsyms]              [k] __mem_cgroup_uncharge_common       
            |
            --- __mem_cgroup_uncharge_common
                mem_cgroup_uncharge_page
                page_remove_rmap
                unmap_vmas
                unmap_region
                do_munmap
                sys_brk
                system_call
                __brk

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

     0.00%  postgres  [kernel.kallsyms]              [k] finish_task_switch                 
            |
            --- finish_task_switch
                thread_return
                schedule_hrtimeout_range
                poll_schedule_timeout
                do_sys_poll
                sys_poll
                system_call
                __poll
                0x72c4479b242c



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