# ========
# captured on: Tue Sep 22 15:00:43 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 = { 6 }
# HEADER_CPU_TOPOLOGY info available, use -I to display
# HEADER_NUMA_TOPOLOGY info available, use -I to display
# ========
#
# Samples: 18K of event 'cycles'
# Event count (approx.): 13558078414
#
# Overhead   Command                  Shared Object                                         Symbol
# ........  ........  .............................  .............................................
#
     9.58%  postgres  postgres                       [.] HeapTupleSatisfiesMVCC                   
            |
            --- HeapTupleSatisfiesMVCC

     8.27%  postgres  postgres                       [.] varstr_cmp                               
            |
            --- varstr_cmp

     7.18%  postgres  [kernel.kallsyms]              [k] copy_user_generic_string                 
            |
            --- copy_user_generic_string
               |          
               |--99.93%-- file_read_actor
               |          generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
                --0.07%-- [...]

     7.15%  postgres  postgres                       [.] bcTruelen                                
            |
            --- bcTruelen

     7.09%  postgres  postgres                       [.] hash_search_with_hash_value              
            |
            --- hash_search_with_hash_value
               |          
               |--0.22%-- 0x1d4108000000000
                --99.78%-- [...]

     5.22%  postgres  postgres                       [.] slot_deform_tuple                        
            |
            --- slot_deform_tuple

     4.37%  postgres  postgres                       [.] heap_getnext                             
            |
            --- heap_getnext

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

     3.85%  postgres  postgres                       [.] ExecMakeFunctionResultNoSets             
            |
            --- ExecMakeFunctionResultNoSets

     2.94%  postgres  postgres                       [.] PinBuffer                                
            |
            --- PinBuffer

     2.78%  postgres  postgres                       [.] StrategyGetBuffer                        
            |
            --- StrategyGetBuffer

     2.75%  postgres  postgres                       [.] slot_getattr                             
            |
            --- slot_getattr

     2.52%  postgres  postgres                       [.] ExecScan                                 
            |
            --- ExecScan

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

     2.20%  postgres  postgres                       [.] heap_parallelscan_nextpage               
            |
            --- heap_parallelscan_nextpage

     2.00%  postgres  postgres                       [.] heap_page_prune_opt                      
            |
            --- heap_page_prune_opt

     1.82%  postgres  postgres                       [.] heapgetpage                              
            |
            --- heapgetpage

     1.39%  postgres  postgres                       [.] ExecQual                                 
            |
            --- ExecQual

     1.24%  postgres  postgres                       [.] ExecEvalScalarVarFast                    
            |
            --- ExecEvalScalarVarFast

     1.13%  postgres  [kernel.kallsyms]              [k] find_get_page                            
            |
            --- find_get_page
               |          
               |--98.60%-- generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --1.40%-- do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     1.04%  postgres  postgres                       [.] ExecStoreTuple                           
            |
            --- ExecStoreTuple

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

     0.95%  postgres  postgres                       [.] UnpinBuffer.clone.0                      
            |
            --- UnpinBuffer.clone.0

     0.93%  postgres  postgres                       [.] LWLockRelease                            
            |
            --- LWLockRelease

     0.85%  postgres  postgres                       [.] ReadBuffer_common                        
            |
            --- ReadBuffer_common

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

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

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

     0.59%  postgres  [kernel.kallsyms]              [k] put_page                                 
            |
            --- put_page
               |          
               |--98.21%-- generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --1.79%-- do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.57%  postgres  postgres                       [.] pgstat_init_function_usage               
            |
            --- pgstat_init_function_usage

     0.56%  postgres  [kernel.kallsyms]              [k] mutex_unlock                             
            |
            --- mutex_unlock
               |          
               |--98.11%-- ext4_llseek
               |          vfs_llseek
               |          sys_lseek
               |          system_call
               |          __GI___libc_lseek64
               |          
                --1.89%-- vfs_llseek
                          sys_lseek
                          system_call
                          __GI___libc_lseek64

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

     0.53%  postgres  postgres                       [.] pgstat_end_function_usage                
            |
            --- pgstat_end_function_usage
               |          
               |--2.00%-- 0xc241e00497ac1
               |          
               |--1.00%-- 0xff9fd00497ac1
               |          
               |--1.00%-- 0x1da16c2
               |          
               |--1.00%-- 0x324900497ac1
               |          
               |--1.00%-- 0xf80bc00497ac1
               |          
               |--1.00%-- 0x1911300497ac1
               |          
               |--1.00%-- 0x6043300497ac1
               |          
               |--1.00%-- 0x1268cb00497ac1
               |          
               |--1.00%-- 0x4c13a00497ac1
               |          
               |--1.00%-- 0xcda6d00497ac1
               |          
               |--1.00%-- 0x14b5ff00497ac1
               |          
               |--1.00%-- 0xb127600497ac1
               |          
               |--1.00%-- 0x11f93300497ac1
               |          
               |--1.00%-- 0x10ca9a00497ac1
               |          
               |--1.00%-- 0x987d700497ac1
               |          
               |--1.00%-- 0x63deb00497ac1
               |          
               |--1.00%-- 0xac27100497ac1
               |          
               |--1.00%-- 0x159c8100497ac1
               |          
               |--1.00%-- 0x1da27aa
               |          
               |--1.00%-- 0x1231de00497ac1
               |          
               |--1.00%-- 0x78ad600497ac1
               |          
               |--1.00%-- 0x12637300497ac1
               |          
               |--1.00%-- 0x12dc9a00497ac1
               |          
               |--1.00%-- 0x95c9800497ac1
               |          
               |--1.00%-- 0x9bdd600497ac1
               |          
               |--1.00%-- 0xb220d00497ac1
               |          
               |--1.00%-- 0x10629700497ac1
               |          
               |--1.00%-- 0x7935f00497ac1
               |          
               |--1.00%-- 0x13280200497ac1
               |          
               |--1.00%-- 0x6361300497ac1
               |          
               |--1.00%-- 0x17597c00497ac1
               |          
               |--1.00%-- 0x1147e700497ac1
               |          
               |--1.00%-- 0x109a8700497ac1
               |          
               |--1.00%-- 0x16a22600497ac1
               |          
               |--1.00%-- 0x1774f500497ac1
               |          
               |--1.00%-- 0xc240b00497ac1
               |          
               |--1.00%-- 0xc242700497ac1
               |          
               |--1.00%-- 0xc23e900497ac1
               |          
               |--1.00%-- 0xc240300497ac1
               |          
               |--1.00%-- 0xc241200497ac1
               |          
               |--1.00%-- 0xc240d00497ac1
               |          
               |--1.00%-- 0xc241500497ac1
               |          
               |--1.00%-- 0xc23ef00497ac1
               |          
               |--0.99%-- 0xc241800497ac1
               |          
               |--0.99%-- 0xc241b00497ac1
               |          
               |--0.90%-- 0xc243700497ac1
                --53.06%-- [...]

     0.48%  postgres  [kernel.kallsyms]              [k] mutex_lock                               
            |
            --- mutex_lock
               |          
               |--97.78%-- ext4_llseek
               |          vfs_llseek
               |          sys_lseek
               |          system_call
               |          __GI___libc_lseek64
               |          
                --2.22%-- vfs_llseek
                          sys_lseek
                          system_call
                          __GI___libc_lseek64

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

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

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

     0.30%  postgres  [kernel.kallsyms]              [k] radix_tree_lookup_slot                   
            |
            --- radix_tree_lookup_slot
               |          
               |--93.02%-- find_get_page
               |          generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --6.98%-- generic_file_aio_read
                          do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

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

     0.27%  postgres  [kernel.kallsyms]              [k] vfs_read                                 
            |
            --- vfs_read
                sys_read
                system_call
                __GI___libc_read

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

     0.25%  postgres  [kernel.kallsyms]              [k] generic_file_aio_read                    
            |
            --- generic_file_aio_read
                do_sync_read
                vfs_read
                sys_read
                system_call
                __GI___libc_read

     0.25%  postgres  postgres                       [.] bpchareq                                 
            |
            --- bpchareq

     0.25%  postgres  [ext4]                         [k] ext4_llseek                              
            |
            --- ext4_llseek
                vfs_llseek
                sys_lseek
                system_call
                __GI___libc_lseek64

     0.23%  postgres  libc-2.12.so                   [.] memcpy                                   
            |
            --- memcpy
               |          
               |--93.20%-- networkjoinsel
                --6.80%-- [...]

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

     0.23%  postgres  [kernel.kallsyms]              [k] system_call                              
            |
            --- system_call
               |          
               |--67.43%-- __GI___libc_read
               |          
               |--30.21%-- __GI___libc_lseek64
               |          
                --2.36%-- __GI___semop

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

     0.21%  postgres  [kernel.kallsyms]              [k] __audit_syscall_exit                     
            |
            --- __audit_syscall_exit
               |          
               |--92.49%-- sysret_audit
               |          |          
               |          |--54.02%-- __GI___libc_read
               |          |          
               |          |--37.87%-- __GI___libc_lseek64
               |          |          
               |           --8.11%-- __GI___semop
               |          
                --7.51%-- __GI___libc_lseek64

     0.17%  postgres  postgres                       [.] LockBuffer                               
            |
            --- LockBuffer

     0.16%  postgres  [kernel.kallsyms]              [k] _spin_lock                               
            |
            --- _spin_lock
               |          
               |--48.36%-- thread_return
               |          sys_semtimedop
               |          sys_semop
               |          system_call
               |          __GI___semop
               |          
               |--29.00%-- __mutex_unlock_slowpath
               |          mutex_unlock
               |          ext4_llseek
               |          vfs_llseek
               |          sys_lseek
               |          system_call
               |          __GI___libc_lseek64
               |          
               |--6.47%-- task_rq_lock
               |          try_to_wake_up
               |          wake_up_process
               |          |          
               |          |--50.01%-- hrtimer_wakeup
               |          |          __run_hrtimer
               |          |          hrtimer_interrupt
               |          |          smp_apic_timer_interrupt
               |          |          apic_timer_interrupt
               |          |          generic_file_aio_read
               |          |          do_sync_read
               |          |          vfs_read
               |          |          sys_read
               |          |          system_call
               |          |          __GI___libc_read
               |          |          
               |           --49.99%-- update_queue
               |                     sys_semtimedop
               |                     sys_semop
               |                     system_call
               |                     __GI___semop
               |          
               |--6.46%-- ipc_lock
               |          ipc_lock_check
               |          sys_semtimedop
               |          sys_semop
               |          system_call
               |          __GI___semop
               |          
               |--3.24%-- hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          heap_parallelscan_nextpage
               |          
               |--3.24%-- tick_do_update_jiffies64
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          HeapTupleSatisfiesMVCC
               |          
                --3.24%-- scheduler_tick
                          update_process_times
                          tick_sched_timer
                          __run_hrtimer
                          hrtimer_interrupt
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          ExecEvalConst

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

     0.15%  postgres  libc-2.12.so                   [.] __memcmp_sse4_1                          
            |
            --- __memcmp_sse4_1

     0.15%  postgres  [kernel.kallsyms]              [k] __mutex_lock_slowpath                    
            |
            --- __mutex_lock_slowpath
               |          
               |--96.42%-- mutex_lock
               |          ext4_llseek
               |          vfs_llseek
               |          sys_lseek
               |          system_call
               |          __GI___libc_lseek64
               |          
                --3.58%-- ext4_llseek
                          vfs_llseek
                          sys_lseek
                          system_call
                          __GI___libc_lseek64

     0.14%  postgres  postgres                       [.] shm_mq_receive                           
            |
            --- shm_mq_receive

     0.14%  postgres  [kernel.kallsyms]              [k] sys_read                                 
            |
            --- sys_read
               |          
               |--70.60%-- system_call
               |          __GI___libc_read
               |          
                --29.40%-- __GI___libc_read

     0.14%  postgres  [kernel.kallsyms].vsyscall_fn  [.] vread_tsc                                
            |
            --- vread_tsc
               |          
               |--88.46%-- 0x7fff59744814
               |          0x7fff597448bc
               |          __gettimeofday
               |          
                --11.54%-- 0x7fff597448bc
                          __gettimeofday

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

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

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

     0.11%  postgres  postgres                       [.] AllocSetAlloc                            
            |
            --- AllocSetAlloc
               |          
               |--4.77%-- networkjoinsel
                --95.23%-- [...]

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

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

     0.10%  postgres  [kernel.kallsyms]              [k] fget_light                               
            |
            --- fget_light
               |          
               |--63.15%-- sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --36.85%-- sys_lseek
                          system_call
                          __GI___libc_lseek64

     0.10%  postgres  [kernel.kallsyms]              [k] sys_lseek                                
            |
            --- sys_lseek
               |          
               |--73.72%-- __GI___libc_lseek64
               |          
                --26.28%-- system_call
                          __GI___libc_lseek64

     0.10%  postgres  [kernel.kallsyms]              [k] sysret_check                             
            |
            --- sysret_check
               |          
               |--52.70%-- __GI___libc_read
               |          
                --47.30%-- __GI___libc_lseek64

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

     0.09%  postgres  [kernel.kallsyms]              [k] file_read_actor                          
            |
            --- file_read_actor
                generic_file_aio_read
                do_sync_read
                vfs_read
                sys_read
                system_call
                __GI___libc_read

     0.09%  postgres  postgres                       [.] TerminateBufferIO                        
            |
            --- TerminateBufferIO

     0.09%  postgres  [kernel.kallsyms]              [k] audit_syscall_entry                      
            |
            --- audit_syscall_entry
                auditsys
               |          
               |--52.96%-- __GI___libc_lseek64
               |          
                --47.04%-- __GI___libc_read

     0.08%  postgres  [vdso]                         [.] 0x00007fff59744870                       
            |          
            |--25.06%-- 0x7fff597448a4
            |          __gettimeofday
            |          
            |--18.75%-- 0x7fff597448d4
            |          __gettimeofday
            |          
            |--6.26%-- 0x7fff597448cd
            |          __gettimeofday
            |          
            |--6.26%-- 0x7fff5974483d
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--6.26%-- 0x7fff5974482a
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--6.25%-- 0x7fff597447ee
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--6.25%-- 0x7fff597448db
            |          __gettimeofday
            |          
            |--6.25%-- 0x7fff5974489b
            |          __gettimeofday
            |          
            |--6.23%-- 0x7fff59744870
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--6.21%-- 0x7fff59744826
            |          0x7fff597448bc
            |          __gettimeofday
            |          
             --6.21%-- 0x7fff59744814
                       0x7fff597448bc
                       __gettimeofday

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

     0.08%  postgres  [kernel.kallsyms]              [k] generic_segment_checks                   
            |
            --- generic_segment_checks
               |          
               |--86.68%-- generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --13.32%-- do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

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

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

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

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

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

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

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

     0.06%  postgres  [kernel.kallsyms]              [k] current_kernel_time                      
            |
            --- current_kernel_time
               |          
               |--81.79%-- audit_syscall_entry
               |          auditsys
               |          |          
               |          |--66.67%-- __GI___libc_lseek64
               |          |          
               |           --33.33%-- __GI___libc_read
               |          
                --18.21%-- auditsys
                          __GI___libc_lseek64

     0.05%  postgres  postgres                       [.] do_numeric_accum                         
            |
            --- do_numeric_accum
               |          
               |--90.05%-- 0x0
                --9.95%-- [...]

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

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

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

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

     0.05%  postgres  [kernel.kallsyms]              [k] vfs_llseek                               
            |
            --- vfs_llseek
               |          
               |--88.94%-- sys_lseek
               |          system_call
               |          __GI___libc_lseek64
               |          
                --11.06%-- system_call
                          __GI___libc_lseek64

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

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

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

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

     0.04%  postgres  [kernel.kallsyms]              [k] apic_timer_interrupt                     
            |
            --- apic_timer_interrupt
               |          
               |--25.04%-- bcTruelen
               |          
               |--24.94%-- LWLockAcquire
               |          
               |--12.54%-- slot_deform_tuple
               |          
               |--12.53%-- slot_getattr
               |          
               |--12.50%-- vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --12.45%-- hash_search_with_hash_value

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

     0.04%  postgres  postgres                       [.] int4_sum                                 
            |
            --- int4_sum

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

     0.04%  postgres  [kernel.kallsyms]              [k] ring_buffer_lock_reserve                 
            |
            --- ring_buffer_lock_reserve
               |          
               |--71.41%-- trace_buffer_lock_reserve
               |          trace_current_buffer_lock_reserve
               |          |          
               |          |--60.03%-- ftrace_raw_event_id_softirq
               |          |          ftrace_raw_event_softirq_raise
               |          |          |          
               |          |          |--66.59%-- raise_softirq
               |          |          |          run_local_timers
               |          |          |          update_process_times
               |          |          |          tick_sched_timer
               |          |          |          __run_hrtimer
               |          |          |          hrtimer_interrupt
               |          |          |          smp_apic_timer_interrupt
               |          |          |          apic_timer_interrupt
               |          |          |          |          
               |          |          |          |--50.01%-- ExecEvalConst
               |          |          |          |          
               |          |          |           --49.99%-- ext4_llseek
               |          |          |                     vfs_llseek
               |          |          |                     sys_lseek
               |          |          |                     system_call
               |          |          |                     __GI___libc_lseek64
               |          |          |          
               |          |           --33.41%-- __napi_schedule
               |          |                     ixgbe_msix_clean_rings
               |          |                     handle_IRQ_event
               |          |                     handle_edge_irq
               |          |                     handle_irq
               |          |                     do_IRQ
               |          |                     ret_from_intr
               |          |                     StrategyGetBuffer
               |          |          
               |           --39.97%-- ftrace_raw_event_sched_stat_runtime
               |                     update_curr
               |                     |          
               |                     |--50.03%-- dequeue_entity
               |                     |          dequeue_task_fair
               |                     |          dequeue_task
               |                     |          deactivate_task
               |                     |          thread_return
               |                     |          sys_semtimedop
               |                     |          sys_semop
               |                     |          system_call
               |                     |          __GI___semop
               |                     |          
               |                      --49.97%-- 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
               |          
                --28.59%-- trace_current_buffer_lock_reserve
                          ftrace_raw_event_id_softirq
                          |          
                          |--50.01%-- ftrace_raw_event_softirq_exit
                          |          __do_softirq
                          |          call_softirq
                          |          do_softirq
                          |          irq_exit
                          |          smp_apic_timer_interrupt
                          |          apic_timer_interrupt
                          |          PartialSeqNext
                          |          
                           --49.99%-- ftrace_raw_event_softirq_entry
                                     __do_softirq
                                     call_softirq
                                     do_softirq
                                     irq_exit
                                     smp_apic_timer_interrupt
                                     apic_timer_interrupt
                                     bcTruelen

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

     0.04%  postgres  [kernel.kallsyms]              [k] unroll_tree_refs                         
            |
            --- unroll_tree_refs
               |          
               |--85.81%-- __audit_syscall_exit
               |          sysret_audit
               |          |          
               |          |--66.65%-- __GI___libc_lseek64
               |          |          
               |           --33.35%-- __GI___libc_read
               |          
                --14.19%-- sysret_audit
                          __GI___libc_read

     0.04%  postgres  [kernel.kallsyms]              [k] touch_atime                              
            |
            --- touch_atime
               |          
               |--86.12%-- generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --13.88%-- do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

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

     0.03%  postgres  postgres                       [.] int8_numeric                             
            |
            --- int8_numeric

     0.03%  postgres  postgres                       [.] init_var_from_num                        
            |
            --- init_var_from_num
               |          
               |--66.64%-- 0x0
               |          
                --33.36%-- slot_getsomeattrs

     0.03%  postgres  [kernel.kallsyms]              [k] rcu_process_gp_end                       
            |
            --- rcu_process_gp_end
               |          
               |--83.31%-- __rcu_process_callbacks
               |          rcu_process_callbacks
               |          __do_softirq
               |          call_softirq
               |          do_softirq
               |          irq_exit
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--40.03%-- bcTruelen
               |          |          
               |          |--20.04%-- HeapTupleSatisfiesMVCC
               |          |          
               |          |--20.02%-- pg_detoast_datum_packed
               |          |          
               |           --19.91%-- find_get_page
               |                     generic_file_aio_read
               |                     do_sync_read
               |                     vfs_read
               |                     sys_read
               |                     system_call
               |                     __GI___libc_read
               |          
                --16.69%-- rcu_process_callbacks
                          __do_softirq
                          call_softirq
                          do_softirq
                          irq_exit
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          ExecEvalConst

     0.03%  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
               |          
               |--66.67%-- ftrace_raw_event_id_softirq
               |          |          
               |          |--74.95%-- ftrace_raw_event_softirq_exit
               |          |          __do_softirq
               |          |          call_softirq
               |          |          do_softirq
               |          |          irq_exit
               |          |          smp_apic_timer_interrupt
               |          |          apic_timer_interrupt
               |          |          |          
               |          |          |--33.43%-- varstr_cmp
               |          |          |          
               |          |          |--33.40%-- slot_getattr
               |          |          |          
               |          |           --33.16%-- file_read_actor
               |          |                     generic_file_aio_read
               |          |                     do_sync_read
               |          |                     vfs_read
               |          |                     sys_read
               |          |                     system_call
               |          |                     __GI___libc_read
               |          |          
               |           --25.05%-- ftrace_raw_event_softirq_entry
               |                     __do_softirq
               |                     call_softirq
               |                     do_softirq
               |                     irq_exit
               |                     smp_apic_timer_interrupt
               |                     apic_timer_interrupt
               |                     heap_parallelscan_nextpage
               |          
               |--16.67%-- 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
               |          
                --16.66%-- ftrace_raw_event_id_sched_stat_template
                          ftrace_raw_event_sched_stat_wait
                          update_stats_wait_end
                          set_next_entity
                          pick_next_task_fair
                          schedule
                          sys_semtimedop
                          sys_semop
                          system_call
                          __GI___semop

     0.03%  postgres  [kernel.kallsyms]              [k] _cond_resched                            
            |
            --- _cond_resched
               |          
               |--50.00%-- generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
               |--16.68%-- mutex_lock
               |          ext4_llseek
               |          vfs_llseek
               |          sys_lseek
               |          system_call
               |          __GI___libc_lseek64
               |          
               |--16.67%-- do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --16.65%-- ext4_llseek
                          vfs_llseek
                          sys_lseek
                          system_call
                          __GI___libc_lseek64

     0.03%  postgres  [kernel.kallsyms]              [k] kfree                                    
            |
            --- kfree
               |          
               |--66.66%-- sysret_audit
               |          |          
               |          |--74.98%-- __GI___libc_lseek64
               |          |          
               |           --25.02%-- __GI___libc_read
               |          
                --33.34%-- __audit_syscall_exit
                          sysret_audit
                          __GI___libc_lseek64

     0.03%  postgres  [kernel.kallsyms]              [k] find_busiest_group                       
            |
            --- find_busiest_group
                thread_return
                sys_semtimedop
                sys_semop
                system_call
                __GI___semop

     0.03%  postgres  libc-2.12.so                   [.] __GI___libc_lseek64                      
            |
            --- __GI___libc_lseek64

     0.03%  postgres  [kernel.kallsyms]              [k] __mutex_unlock_slowpath                  
            |
            --- __mutex_unlock_slowpath
               |          
               |--83.38%-- mutex_unlock
               |          ext4_llseek
               |          vfs_llseek
               |          sys_lseek
               |          system_call
               |          __GI___libc_lseek64
               |          
                --16.62%-- ext4_llseek
                          vfs_llseek
                          sys_lseek
                          system_call
                          __GI___libc_lseek64

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

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

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

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

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

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

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

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

     0.03%  postgres  postgres                       [.] LookupTupleHashEntry                     
            |
            --- LookupTupleHashEntry
                0x1d4108000000000

     0.03%  postgres  postgres                       [.] int64_to_numericvar                      
            |
            --- int64_to_numericvar

     0.03%  postgres  [kernel.kallsyms]              [k] path_put                                 
            |
            --- path_put
               |          
               |--59.95%-- sysret_audit
               |          __GI___libc_lseek64
               |          
                --40.05%-- __audit_syscall_exit
                          sysret_audit
                          __GI___libc_lseek64

     0.03%  postgres  [kernel.kallsyms]              [k] dput                                     
            |
            --- dput
               |          
               |--59.91%-- path_put
               |          __audit_syscall_exit
               |          sysret_audit
               |          |          
               |          |--66.91%-- __GI___libc_read
               |          |          
               |           --33.09%-- __GI___libc_lseek64
               |          
                --40.09%-- __audit_syscall_exit
                          sysret_audit
                          |          
                          |--50.02%-- __GI___libc_read
                          |          
                           --49.98%-- __GI___libc_lseek64

     0.03%  postgres  [kernel.kallsyms]              [k] mark_page_accessed                       
            |
            --- mark_page_accessed
               |          
               |--80.03%-- generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --19.97%-- do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

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

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

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

     0.02%  postgres  postgres                       [.] FunctionCall2Coll                        
            |
            --- FunctionCall2Coll

     0.02%  postgres  [kernel.kallsyms]              [k] rb_end_commit                            
            |
            --- rb_end_commit
               |          
               |--50.03%-- ring_buffer_unlock_commit
               |          trace_nowake_buffer_unlock_commit
               |          |          
               |          |--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
               |          |          pgstat_end_function_usage
               |          |          
               |           --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
               |                     bpcharle
               |          
                --49.97%-- trace_nowake_buffer_unlock_commit
                          |          
                          |--50.06%-- 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
                          |          bcTruelen
                          |          
                           --49.94%-- 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

     0.02%  postgres  postgres                       [.] int8_avg_accum                           
            |
            --- int8_avg_accum

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

     0.02%  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
               |          
               |--25.04%-- slot_getattr
               |          
               |--25.03%-- bcTruelen
               |          
               |--24.98%-- ReadBuffer_common
               |          
                --24.95%-- hash_search_with_hash_value

     0.02%  postgres  postgres                       [.] TupleHashTableHash                       
            |
            --- TupleHashTableHash
               |          
               |--25.07%-- 0x1d74de0
                --74.93%-- [...]

     0.02%  postgres  [kernel.kallsyms]              [k] inotify_dentry_parent_queue_event        
            |
            --- inotify_dentry_parent_queue_event
               |          
               |--74.98%-- vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --25.02%-- sys_read
                          system_call
                          __GI___libc_read

     0.02%  postgres  [kernel.kallsyms]              [k] update_curr                              
            |
            --- update_curr
               |          
               |--25.08%-- task_tick_fair
               |          scheduler_tick
               |          update_process_times
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          hash_search_with_hash_value
               |          
               |--25.05%-- 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
               |          
               |--24.99%-- dequeue_entity
               |          dequeue_task_fair
               |          dequeue_task
               |          deactivate_task
               |          thread_return
               |          sys_semtimedop
               |          sys_semop
               |          system_call
               |          __GI___semop
               |          
                --24.88%-- put_prev_task_fair
                          schedule
                          sys_semtimedop
                          sys_semop
                          system_call
                          __GI___semop

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

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

     0.02%  postgres  [kernel.kallsyms]              [k] sys_semtimedop                           
            |
            --- sys_semtimedop
                sys_semop
                system_call
                __GI___semop

     0.02%  postgres  [kernel.kallsyms]              [k] auditsys                                 
            |
            --- auditsys
               |          
               |--74.37%-- __GI___libc_read
               |          
                --25.63%-- __GI___libc_lseek64

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

     0.02%  postgres  [kernel.kallsyms]              [k] native_write_msr_safe                    
            |
            --- native_write_msr_safe
               |          
               |--99.91%-- 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
               |          |          
               |          |--33.34%-- LWLockAcquire
               |          |          
               |          |--33.33%-- slot_getattr
               |          |          
               |           --33.33%-- HeapTupleSatisfiesMVCC
                --0.09%-- [...]

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

     0.02%  postgres  [kernel.kallsyms]              [k] __rcu_process_callbacks                  
            |
            --- __rcu_process_callbacks
                rcu_process_callbacks
                __do_softirq
                call_softirq
                do_softirq
                irq_exit
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--33.34%-- PinBuffer
               |          
               |--33.33%-- slot_deform_tuple
               |          
                --33.33%-- heap_getnext

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

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

     0.02%  postgres  [kernel.kallsyms]              [k] _spin_lock_irqsave                       
            |
            --- _spin_lock_irqsave
               |          
               |--66.69%-- ntp_tick_length
               |          do_timer
               |          tick_do_update_jiffies64
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--50.04%-- heap_getnext
               |          |          
               |           --49.96%-- __audit_syscall_exit
               |                     sysret_audit
               |                     __GI___libc_read
               |          
                --33.31%-- __rcu_process_callbacks
                          rcu_process_callbacks
                          __do_softirq
                          call_softirq
                          do_softirq
                          irq_exit
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          generic_file_aio_read
                          do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.02%  postgres  [kernel.kallsyms]              [k] trace_buffer_lock_reserve                
            |
            --- trace_buffer_lock_reserve
                trace_current_buffer_lock_reserve
               |          
               |--66.70%-- ftrace_raw_event_id_softirq
               |          |          
               |          |--50.05%-- 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
               |          |          
               |           --49.95%-- 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
               |          
                --33.30%-- 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

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

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

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

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

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

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

     0.02%  postgres  [kernel.kallsyms]              [k] trace_clock_local                        
            |
            --- trace_clock_local
               |          
               |--66.70%-- rb_reserve_next_event
               |          ring_buffer_lock_reserve
               |          trace_buffer_lock_reserve
               |          trace_current_buffer_lock_reserve
               |          |          
               |          |--50.10%-- ftrace_raw_event_sched_stat_runtime
               |          |          update_curr
               |          |          task_tick_fair
               |          |          scheduler_tick
               |          |          update_process_times
               |          |          tick_sched_timer
               |          |          __run_hrtimer
               |          |          hrtimer_interrupt
               |          |          smp_apic_timer_interrupt
               |          |          apic_timer_interrupt
               |          |          HeapTupleSatisfiesMVCC
               |          |          
               |           --49.90%-- ftrace_raw_event_id_sched_stat_template
               |                     ftrace_raw_event_sched_stat_wait
               |                     update_stats_wait_end
               |                     set_next_entity
               |                     pick_next_task_fair
               |                     schedule
               |                     sys_semtimedop
               |                     sys_semop
               |                     system_call
               |                     __GI___semop
               |          
                --33.30%-- 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
                          varstr_cmp

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

     0.02%  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

     0.02%  postgres  [kernel.kallsyms]              [k] tracing_generic_entry_update             
            |
            --- tracing_generic_entry_update
               |          
               |--66.87%-- trace_buffer_lock_reserve
               |          trace_current_buffer_lock_reserve
               |          |          
               |          |--50.12%-- 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
               |          |          hash_search_with_hash_value
               |          |          
               |           --49.88%-- 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
               |          
                --33.13%-- trace_current_buffer_lock_reserve
                          ftrace_raw_event_sched_stat_runtime
                          update_curr
                          put_prev_task_fair
                          schedule
                          sys_semtimedop
                          sys_semop
                          system_call
                          __GI___semop

     0.01%  postgres  [kernel.kallsyms]              [k] __do_softirq                             
            |
            --- __do_softirq
                call_softirq
                do_softirq
                irq_exit
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--50.00%-- varstr_cmp
               |          
                --50.00%-- bcTruelen

     0.01%  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
               |          
               |--50.00%-- LWLockAcquire
               |          
                --50.00%-- HeapTupleSatisfiesMVCC

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

     0.01%  postgres  postgres                       [.] hash_search                              
            |
            --- hash_search
               |          
               |--50.07%-- 0x1d4108000000000
               |          
                --49.93%-- 0x1d72000

     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
               |          
               |--50.04%-- ftrace_raw_event_id_softirq
               |          ftrace_raw_event_softirq_entry
               |          __do_softirq
               |          call_softirq
               |          do_softirq
               |          irq_exit
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          varstr_cmp
               |          
                --49.96%-- ftrace_raw_event_sched_stat_runtime
                          update_curr
                          put_prev_task_fair
                          schedule
                          sys_semtimedop
                          sys_semop
                          system_call
                          __GI___semop

     0.01%  postgres  [kernel.kallsyms]              [k] update_process_times                     
            |
            --- update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--50.03%-- hash_search_with_hash_value
               |          
                --49.97%-- varstr_cmp

     0.01%  postgres  [kernel.kallsyms]              [k] tick_sched_timer                         
            |
            --- tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--50.00%-- PartialSeqNext
               |          
                --50.00%-- bcTruelen

     0.01%  postgres  [kernel.kallsyms]              [k] native_sched_clock                       
            |
            --- native_sched_clock
               |          
               |--50.03%-- sched_clock
               |          trace_clock_local
               |          rb_reserve_next_event
               |          ring_buffer_lock_reserve
               |          trace_buffer_lock_reserve
               |          trace_current_buffer_lock_reserve
               |          ftrace_raw_event_id_softirq
               |          ftrace_raw_event_softirq_entry
               |          __do_softirq
               |          call_softirq
               |          do_softirq
               |          irq_exit
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          slot_getattr
               |          
                --49.97%-- trace_clock_local
                          rb_reserve_next_event
                          ring_buffer_lock_reserve
                          trace_buffer_lock_reserve
                          trace_current_buffer_lock_reserve
                          ftrace_raw_event_id_softirq
                          ftrace_raw_event_softirq_raise
                          raise_softirq
                          run_local_timers
                          update_process_times
                          tick_sched_timer
                          __run_hrtimer
                          hrtimer_interrupt
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          hash_search_with_hash_value

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

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

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

     0.01%  postgres  [kernel.kallsyms]              [k] update_rq_clock                          
            |
            --- update_rq_clock
               |          
               |--50.10%-- update_process_times
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          heap_parallelscan_nextpage
               |          
                --49.90%-- enqueue_task
                          activate_task
                          try_to_wake_up
                          wake_up_process
                          update_queue
                          sys_semtimedop
                          sys_semop
                          system_call
                          __GI___semop

     0.01%  postgres  [kernel.kallsyms]              [k] find_next_bit                            
            |
            --- find_next_bit
               |          
               |--50.01%-- cpumask_next_and
               |          find_busiest_group
               |          thread_return
               |          sys_semtimedop
               |          sys_semop
               |          system_call
               |          __GI___semop
               |          
                --49.99%-- find_busiest_group
                          thread_return
                          sys_semtimedop
                          sys_semop
                          system_call
                          __GI___semop

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

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

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

     0.01%  postgres  [kernel.kallsyms]              [k] inotify_inode_queue_event                
            |
            --- inotify_inode_queue_event
               |          
               |--50.04%-- vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --49.96%-- sys_read
                          system_call
                          __GI___libc_read

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

     0.01%  postgres  [kernel.kallsyms]              [k] rb_reserve_next_event                    
            |
            --- rb_reserve_next_event
                ring_buffer_lock_reserve
                trace_buffer_lock_reserve
                trace_current_buffer_lock_reserve
               |          
               |--50.16%-- 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
               |          bcTruelen
               |          
                --49.84%-- 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] dequeue_task                             
            |
            --- dequeue_task
                deactivate_task
                thread_return
                sys_semtimedop
                sys_semop
                system_call
                __GI___semop

     0.01%  postgres  [kernel.kallsyms]              [k] read_tsc                                 
            |
            --- read_tsc
                ktime_get_update_offsets
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--50.14%-- heap_getnext
               |          
                --49.86%-- 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] ftrace_raw_event_sched_stat_runtime      
            |
            --- ftrace_raw_event_sched_stat_runtime
                update_curr
               |          
               |--50.24%-- task_tick_fair
               |          scheduler_tick
               |          update_process_times
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          varstr_cmp
               |          
                --49.76%-- 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

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

     0.01%  postgres  postgres                       [.] add_var                                  
            |
            --- add_var
                (nil)

     0.01%  postgres  [kernel.kallsyms]              [k] block_sync_page                          
            |
            --- block_sync_page
                sync_page
                sync_page_killable
                __wait_on_bit_lock
                __lock_page_killable
                __lock_page_or_retry
                filemap_fault
                __do_fault
                handle_pte_fault
                handle_mm_fault
                __do_page_fault
                do_page_fault
                page_fault
                check_match.12444

     0.01%  postgres  [kernel.kallsyms]              [k] idle_cpu                                 
            |
            --- idle_cpu
                irq_enter
                smp_apic_timer_interrupt
                apic_timer_interrupt
                PinBuffer

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

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

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

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

     0.01%  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
                bcTruelen

     0.01%  postgres  [kernel.kallsyms]              [k] profile_tick                             
            |
            --- profile_tick
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                bpcharle

     0.01%  postgres  [kernel.kallsyms]              [k] __netif_receive_skb                      
            |
            --- __netif_receive_skb
                netif_receive_skb
                napi_skb_finish
                napi_gro_receive
                ixgbe_poll
                net_rx_action
                __do_softirq
                call_softirq
                do_softirq
                irq_exit
                do_IRQ
                ret_from_intr
                HeapTupleSatisfiesMVCC

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

     0.01%  postgres  [kernel.kallsyms]              [k] sock_alloc_send_pskb                     
            |
            --- sock_alloc_send_pskb
                sock_alloc_send_skb
                __ip_append_data
                ip_append_data
                icmp_push_reply
                icmp_reply
                icmp_echo
                icmp_rcv
                ip_local_deliver_finish
                ip_local_deliver
                ip_rcv_finish
                ip_rcv
                __netif_receive_skb
                process_backlog
                net_rx_action
                __do_softirq
                call_softirq
                do_softirq
                irq_exit
                do_IRQ
                ret_from_intr
                ExecMakeFunctionResultNoSets

     0.01%  postgres  [kernel.kallsyms]              [k] clockevents_program_event                
            |
            --- clockevents_program_event
                tick_program_event
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                slot_deform_tuple

     0.01%  postgres  [kernel.kallsyms]              [k] update_cpu_load                          
            |
            --- update_cpu_load
                scheduler_tick
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                ExecMakeFunctionResultNoSets

     0.01%  postgres  [kernel.kallsyms]              [k] ftrace_trace_stack                       
            |
            --- ftrace_trace_stack
                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
                bcTruelen

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

     0.01%  postgres  [kernel.kallsyms]              [k] do_timer                                 
            |
            --- do_timer
                tick_do_update_jiffies64
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                heap_page_prune_opt

     0.01%  postgres  [kernel.kallsyms]              [k] native_smp_send_reschedule               
            |
            --- native_smp_send_reschedule
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                bcTruelen

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

     0.01%  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
                HeapTupleSatisfiesMVCC

     0.01%  postgres  [kernel.kallsyms]              [k] native_apic_mem_write                    
            |
            --- native_apic_mem_write
                clockevents_program_event
                tick_dev_program_event
                tick_program_event
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                heapgetpage

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

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

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

     0.01%  postgres  [kernel.kallsyms]              [k] trace_current_buffer_lock_reserve        
            |
            --- trace_current_buffer_lock_reserve
                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

     0.01%  postgres  [kernel.kallsyms]              [k] enqueue_entity                           
            |
            --- 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

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

     0.01%  postgres  [kernel.kallsyms]              [k] ftrace_raw_event_id_sched_wakeup_template
            |
            --- 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

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

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

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

     0.01%  postgres  [kernel.kallsyms]              [k] update_cfs_shares                        
            |
            --- update_cfs_shares
                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

     0.01%  postgres  [kernel.kallsyms]              [k] trace_nowake_buffer_unlock_commit        
            |
            --- trace_nowake_buffer_unlock_commit
                ftrace_raw_event_id_softirq
                ftrace_raw_event_softirq_entry
                __do_softirq
                call_softirq
                do_softirq
                irq_exit
                smp_apic_timer_interrupt
                apic_timer_interrupt
                hash_search_with_hash_value

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

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

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

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

     0.01%  postgres  [kernel.kallsyms]              [k] rb_erase                                 
            |
            --- rb_erase
                set_next_entity
                pick_next_task_fair
                schedule
                sys_semtimedop
                sys_semop
                system_call
                __GI___semop

     0.01%  postgres  [kernel.kallsyms]              [k] set_task_cpu                             
            |
            --- set_task_cpu
                try_to_wake_up
                wake_up_process
                hrtimer_wakeup
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                heap_parallelscan_nextpage

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

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

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

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

     0.01%  postgres  [nf_conntrack]                 [k] nf_conntrack_in                          
            |
            --- nf_conntrack_in
                nf_iterate
                nf_hook_slow
                ip_rcv
                __netif_receive_skb
                netif_receive_skb
                napi_skb_finish
                napi_gro_receive
                ixgbe_poll
                net_rx_action
                __do_softirq
                call_softirq
                do_softirq
                irq_exit
                do_IRQ
                ret_from_intr
                heap_parallelscan_nextpage

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

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

     0.01%  postgres  [kernel.kallsyms]              [k] ret_from_sys_call                        
            |
            --- ret_from_sys_call
                __GI___semop

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

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

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

     0.01%  postgres  [kernel.kallsyms]              [k] rb_next                                  
            |
            --- rb_next
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                hash_search_with_hash_value

     0.01%  postgres  [kernel.kallsyms]              [k] __run_hrtimer                            
            |
            --- __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                ExecMakeFunctionResultNoSets

     0.01%  postgres  [kernel.kallsyms]              [k] ftrace_raw_event_softirq_raise           
            |
            --- ftrace_raw_event_softirq_raise
                rcu_check_callbacks
                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

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

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

     0.00%  postgres  [kernel.kallsyms]              [k] perf_pmu_enable                          
            |
            --- perf_pmu_enable
                perf_event_context_sched_in
                __perf_event_task_sched_in
                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)
#
