# ========
# captured on: Tue Sep 22 15:02:13 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 = { 8 }
# HEADER_CPU_TOPOLOGY info available, use -I to display
# HEADER_NUMA_TOPOLOGY info available, use -I to display
# ========
#
# Samples: 8K of event 'cycles'
# Event count (approx.): 6339277590
#
# Overhead   Command                  Shared Object                                         Symbol
# ........  ........  .............................  .............................................
#
     8.84%  postgres  postgres                       [.] hash_search_with_hash_value              
            |
            --- hash_search_with_hash_value
               |          
               |--0.13%-- 0x1d4108000000000
                --99.87%-- [...]

     8.22%  postgres  postgres                       [.] HeapTupleSatisfiesMVCC                   
            |
            --- HeapTupleSatisfiesMVCC

     7.69%  postgres  postgres                       [.] s_lock                                   
            |
            --- s_lock

     6.52%  postgres  postgres                       [.] varstr_cmp                               
            |
            --- varstr_cmp

     5.61%  postgres  postgres                       [.] bcTruelen                                
            |
            --- bcTruelen

     5.13%  postgres  [kernel.kallsyms]              [k] copy_user_generic_string                 
            |
            --- copy_user_generic_string
               |          
               |--99.77%-- file_read_actor
               |          generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
                --0.23%-- [...]

     4.56%  postgres  postgres                       [.] slot_deform_tuple                        
            |
            --- slot_deform_tuple

     3.86%  postgres  postgres                       [.] StrategyGetBuffer                        
            |
            --- StrategyGetBuffer

     3.66%  postgres  postgres                       [.] LWLockAcquire                            
            |
            --- LWLockAcquire

     3.65%  postgres  postgres                       [.] heap_getnext                             
            |
            --- heap_getnext

     3.09%  postgres  postgres                       [.] ExecMakeFunctionResultNoSets             
            |
            --- ExecMakeFunctionResultNoSets

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

     2.26%  postgres  postgres                       [.] slot_getattr                             
            |
            --- slot_getattr

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

     2.02%  postgres  postgres                       [.] PinBuffer                                
            |
            --- PinBuffer

     1.78%  postgres  postgres                       [.] heap_parallelscan_nextpage               
            |
            --- heap_parallelscan_nextpage

     1.77%  postgres  postgres                       [.] ExecScan                                 
            |
            --- ExecScan

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

     1.26%  postgres  postgres                       [.] ReadBuffer_common                        
            |
            --- ReadBuffer_common

     1.17%  postgres  postgres                       [.] ExecQual                                 
            |
            --- ExecQual

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

     0.92%  postgres  [kernel.kallsyms]              [k] find_get_page                            
            |
            --- find_get_page
               |          
               |--97.64%-- generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --2.36%-- do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.89%  postgres  postgres                       [.] ExecEvalScalarVarFast                    
            |
            --- ExecEvalScalarVarFast

     0.87%  postgres  postgres                       [.] ExecEvalConst                            
            |
            --- ExecEvalConst

     0.76%  postgres  libc-2.12.so                   [.] memcpy                                   
            |
            --- memcpy
               |          
               |--94.05%-- networkjoinsel
                --5.95%-- [...]

     0.70%  postgres  [kernel.kallsyms]              [k] _spin_lock                               
            |
            --- _spin_lock
               |          
               |--37.58%-- thread_return
               |          sys_semtimedop
               |          sys_semop
               |          system_call
               |          __GI___semop
               |          
               |--37.30%-- ipc_lock
               |          ipc_lock_check
               |          sys_semtimedop
               |          sys_semop
               |          system_call
               |          __GI___semop
               |          
               |--12.43%-- task_rq_lock
               |          try_to_wake_up
               |          wake_up_process
               |          update_queue
               |          sys_semtimedop
               |          sys_semop
               |          system_call
               |          __GI___semop
               |          
               |--4.75%-- __mutex_unlock_slowpath
               |          mutex_unlock
               |          ext4_llseek
               |          vfs_llseek
               |          sys_lseek
               |          system_call
               |          __GI___libc_lseek64
               |          
               |--3.15%-- try_to_wake_up
               |          wake_up_process
               |          update_queue
               |          sys_semtimedop
               |          sys_semop
               |          system_call
               |          __GI___semop
               |          
               |--1.61%-- smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          HeapTupleSatisfiesMVCC
               |          
               |--1.61%-- do_timer
               |          tick_do_update_jiffies64
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          bpcharle
               |          
                --1.56%-- sys_semtimedop
                          sys_semop
                          system_call
                          __GI___semop

     0.70%  postgres  postgres                       [.] UnpinBuffer.clone.0                      
            |
            --- UnpinBuffer.clone.0

     0.69%  postgres  postgres                       [.] ExecStoreTuple                           
            |
            --- ExecStoreTuple

     0.69%  postgres  postgres                       [.] check_stack_depth                        
            |
            --- check_stack_depth

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

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

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

     0.46%  postgres  postgres                       [.] pgstat_end_function_usage                
            |
            --- pgstat_end_function_usage
               |          
               |--2.48%-- 0x7e4cb00497ac1
               |          
               |--2.48%-- 0x45e4600497ac1
               |          
               |--2.48%-- 0xa2e4600497ac1
               |          
               |--2.48%-- 0x9799e00497ac1
               |          
               |--2.48%-- 0x65fa500497ac1
               |          
               |--2.48%-- 0x151c4500497ac1
               |          
               |--2.48%-- 0x16581e00497ac1
               |          
               |--2.48%-- 0x1477d400497ac1
               |          
               |--2.48%-- 0x3ae0b00497ac1
               |          
               |--2.48%-- 0xb713c00497ac1
               |          
               |--2.48%-- 0x2aa2c00497ac1
               |          
               |--2.48%-- 0xc6a7e00497ac1
               |          
               |--2.48%-- 0xaf79700497ac1
               |          
               |--2.48%-- 0x2765500497ac1
               |          
               |--2.48%-- 0x1fcf800497ac1
               |          
               |--2.42%-- 0xc24d600497ac1
               |          
               |--2.42%-- 0xc251700497ac1
               |          
               |--2.39%-- 0xc24fd00497ac1
               |          
               |--2.37%-- 0xc257a00497ac1
               |          
               |--2.18%-- 0xc252100497ac1
               |          
               |--2.15%-- 0xc252700497ac1
                --48.88%-- [...]

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

     0.42%  postgres  postgres                       [.] hash_any                                 
            |
            --- hash_any

     0.41%  postgres  postgres                       [.] pgstat_init_function_usage               
            |
            --- pgstat_init_function_usage

     0.40%  postgres  [kernel.kallsyms]              [k] put_page                                 
            |
            --- put_page
               |          
               |--97.28%-- generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --2.72%-- do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

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

     0.36%  postgres  [kernel.kallsyms]              [k] mutex_unlock                             
            |
            --- mutex_unlock
                ext4_llseek
                vfs_llseek
                sys_lseek
                system_call
                __GI___libc_lseek64

     0.36%  postgres  postgres                       [.] CheckForSerializableConflictOut          
            |
            --- CheckForSerializableConflictOut

     0.32%  postgres  [kernel.kallsyms]              [k] mutex_lock                               
            |
            --- mutex_lock
               |          
               |--96.60%-- ext4_llseek
               |          vfs_llseek
               |          sys_lseek
               |          system_call
               |          __GI___libc_lseek64
               |          
                --3.40%-- vfs_llseek
                          sys_lseek
                          system_call
                          __GI___libc_lseek64

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

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

     0.30%  postgres  [kernel.kallsyms]              [k] __mutex_lock_slowpath                    
            |
            --- __mutex_lock_slowpath
                mutex_lock
                ext4_llseek
                vfs_llseek
                sys_lseek
                system_call
                __GI___libc_lseek64

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

     0.27%  postgres  [kernel.kallsyms]              [k] find_busiest_group                       
            |
            --- find_busiest_group
                thread_return
                sys_semtimedop
                sys_semop
                system_call
                __GI___semop

     0.26%  postgres  [ext4]                         [k] ext4_llseek                              
            |
            --- ext4_llseek
                vfs_llseek
                sys_lseek
                system_call
                __GI___libc_lseek64

     0.25%  postgres  [kernel.kallsyms]              [k] system_call                              
            |
            --- system_call
               |          
               |--47.45%-- __GI___libc_lseek64
               |          
               |--34.82%-- __GI___libc_read
               |          
                --17.73%-- __GI___semop

     0.25%  postgres  [kernel.kallsyms]              [k] radix_tree_lookup_slot                   
            |
            --- radix_tree_lookup_slot
               |          
               |--91.40%-- find_get_page
               |          generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --8.60%-- generic_file_aio_read
                          do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

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

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

     0.20%  postgres  [kernel.kallsyms]              [k] generic_file_aio_read                    
            |
            --- generic_file_aio_read
                do_sync_read
                vfs_read
                sys_read
                system_call
                __GI___libc_read

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

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

     0.18%  postgres  [kernel.kallsyms].vsyscall_fn  [.] vread_tsc                                
            |
            --- vread_tsc
               |          
               |--93.67%-- 0x7fff59744814
               |          0x7fff597448bc
               |          __gettimeofday
               |          
                --6.33%-- 0x7fff597448bc
                          __gettimeofday

     0.18%  postgres  postgres                       [.] do_numeric_accum                         
            |
            --- do_numeric_accum
               |          
               |--75.07%-- 0x0
                --24.93%-- [...]

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

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

     0.17%  postgres  [vdso]                         [.] 0x00007fff5974482a                       
            |          
            |--19.80%-- 0x7fff5974482a
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--13.48%-- 0x7fff59744814
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--6.74%-- 0x7fff5974486f
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--6.74%-- 0x7fff597448bc
            |          __gettimeofday
            |          
            |--6.74%-- 0x7fff597447fc
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--6.74%-- 0x7fff5974486a
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--6.74%-- 0x7fff597448a4
            |          __gettimeofday
            |          
            |--6.74%-- 0x7fff5974481f
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--6.66%-- 0x7fff597448a7
            |          __gettimeofday
            |          
            |--6.57%-- 0x7fff59744830
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--6.55%-- 0x7fff597448d4
            |          __gettimeofday
            |          
             --6.51%-- 0x7fff597448cd
                       __gettimeofday

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

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

     0.13%  postgres  [kernel.kallsyms]              [k] audit_syscall_entry                      
            |
            --- audit_syscall_entry
                auditsys
               |          
               |--58.61%-- __GI___libc_lseek64
               |          
                --41.39%-- __GI___libc_read

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

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

     0.12%  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

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

     0.11%  postgres  postgres                       [.] int4_sum                                 
            |
            --- int4_sum

     0.11%  postgres  [kernel.kallsyms]              [k] rb_reserve_next_event                    
            |
            --- rb_reserve_next_event
               |          
               |--80.21%-- ring_buffer_lock_reserve
               |          trace_buffer_lock_reserve
               |          trace_current_buffer_lock_reserve
               |          |          
               |          |--61.96%-- ftrace_raw_event_sched_stat_runtime
               |          |          update_curr
               |          |          |          
               |          |          |--40.29%-- 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
               |          |          |          
               |          |          |--39.75%-- dequeue_entity
               |          |          |          dequeue_task_fair
               |          |          |          dequeue_task
               |          |          |          deactivate_task
               |          |          |          thread_return
               |          |          |          sys_semtimedop
               |          |          |          sys_semop
               |          |          |          system_call
               |          |          |          __GI___semop
               |          |          |          
               |          |           --19.96%-- put_prev_task_fair
               |          |                     schedule
               |          |                     sys_semtimedop
               |          |                     sys_semop
               |          |                     system_call
               |          |                     __GI___semop
               |          |          
               |          |--25.53%-- ftrace_raw_event_id_softirq
               |          |          |          
               |          |          |--50.00%-- ftrace_raw_event_softirq_entry
               |          |          |          __do_softirq
               |          |          |          call_softirq
               |          |          |          do_softirq
               |          |          |          irq_exit
               |          |          |          smp_apic_timer_interrupt
               |          |          |          apic_timer_interrupt
               |          |          |          HeapTupleSatisfiesMVCC
               |          |          |          
               |          |           --50.00%-- ftrace_raw_event_softirq_raise
               |          |                     raise_softirq
               |          |                     rcu_check_callbacks
               |          |                     update_process_times
               |          |                     tick_sched_timer
               |          |                     __run_hrtimer
               |          |                     hrtimer_interrupt
               |          |                     smp_apic_timer_interrupt
               |          |                     apic_timer_interrupt
               |          |                     HeapTupleSatisfiesMVCC
               |          |          
               |           --12.51%-- ftrace_raw_event_id_sched_stat_template
               |                     ftrace_raw_event_sched_stat_sleep
               |                     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
               |          
                --19.79%-- trace_buffer_lock_reserve
                          trace_current_buffer_lock_reserve
                          ftrace_raw_event_id_sched_wakeup_template
                          ftrace_raw_event_sched_wakeup
                          try_to_wake_up
                          wake_up_process
                          update_queue
                          sys_semtimedop
                          sys_semop
                          system_call
                          __GI___semop

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

     0.10%  postgres  [kernel.kallsyms]              [k] rw_verify_area                           
            |
            --- rw_verify_area
               |          
               |--88.88%-- vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --11.12%-- sys_read
                          system_call
                          __GI___libc_read

     0.10%  postgres  [kernel.kallsyms]              [k] __audit_syscall_exit                     
            |
            --- __audit_syscall_exit
                sysret_audit
               |          
               |--66.76%-- __GI___libc_lseek64
               |          
               |--22.00%-- __GI___libc_read
               |          
                --11.24%-- __GI___semop

     0.10%  postgres  [kernel.kallsyms]              [k] schedule                                 
            |
            --- schedule
                sys_semtimedop
                sys_semop
                system_call
                __GI___semop

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

     0.09%  postgres  [kernel.kallsyms]              [k] sys_read                                 
            |
            --- sys_read
               |          
               |--62.76%-- system_call
               |          __GI___libc_read
               |          
                --37.24%-- __GI___libc_read

     0.09%  postgres  [kernel.kallsyms]              [k] update_curr                              
            |
            --- update_curr
               |          
               |--62.10%-- dequeue_entity
               |          dequeue_task_fair
               |          dequeue_task
               |          deactivate_task
               |          thread_return
               |          sys_semtimedop
               |          sys_semop
               |          system_call
               |          __GI___semop
               |          
               |--24.99%-- 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
               |          
                --12.92%-- task_tick_fair
                          scheduler_tick
                          update_process_times
                          tick_sched_timer
                          __run_hrtimer
                          hrtimer_interrupt
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          ExecMakeFunctionResultNoSets

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

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

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

     0.08%  postgres  [kernel.kallsyms]              [k] vfs_llseek                               
            |
            --- vfs_llseek
                sys_lseek
                system_call
                __GI___libc_lseek64

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

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

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

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

     0.07%  postgres  postgres                       [.] TupleHashTableHash                       
            |
            --- TupleHashTableHash
               |          
               |--33.70%-- 0x1d72000
                --66.30%-- [...]

     0.07%  postgres  [kernel.kallsyms]              [k] __mutex_unlock_slowpath                  
            |
            --- __mutex_unlock_slowpath
                mutex_unlock
                ext4_llseek
                vfs_llseek
                sys_lseek
                system_call
                __GI___libc_lseek64

     0.07%  postgres  postgres                       [.] init_var_from_num                        
            |
            --- init_var_from_num
               |          
               |--68.42%-- 0x0
               |          
                --31.58%-- slot_getsomeattrs

     0.07%  postgres  [kernel.kallsyms]              [k] fget_light                               
            |
            --- fget_light
               |          
               |--66.76%-- sys_lseek
               |          system_call
               |          __GI___libc_lseek64
               |          
                --33.24%-- sys_read
                          system_call
                          __GI___libc_read

     0.06%  postgres  [kernel.kallsyms]              [k] try_atomic_semop                         
            |
            --- try_atomic_semop
               |          
               |--66.11%-- update_queue
               |          sys_semtimedop
               |          sys_semop
               |          system_call
               |          __GI___semop
               |          
                --33.89%-- sys_semtimedop
                          sys_semop
                          system_call
                          __GI___semop

     0.06%  postgres  postgres                       [.] int8_avg_accum                           
            |
            --- int8_avg_accum

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

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

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

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

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

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

     0.06%  postgres  postgres                       [.] DirectFunctionCall1Coll                  
            |
            --- DirectFunctionCall1Coll

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

     0.06%  postgres  [kernel.kallsyms]              [k] try_to_wake_up                           
            |
            --- try_to_wake_up
                wake_up_process
                update_queue
                sys_semtimedop
                sys_semop
                system_call
                __GI___semop

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

     0.05%  postgres  [kernel.kallsyms]              [k] sys_semtimedop                           
            |
            --- sys_semtimedop
                sys_semop
                system_call
                __GI___semop

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

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

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

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

     0.04%  postgres  [kernel.kallsyms]              [k] current_kernel_time                      
            |
            --- current_kernel_time
               |          
               |--50.48%-- auditsys
               |          __GI___libc_lseek64
               |          
                --49.52%-- audit_syscall_entry
                          auditsys
                          |          
                          |--50.61%-- __GI___libc_lseek64
                          |          
                           --49.39%-- __GI___libc_read

     0.04%  postgres  libc-2.12.so                   [.] __GI___libc_read                         
            |
            --- __GI___libc_read

     0.04%  postgres  [kernel.kallsyms]              [k] native_read_tsc                          
            |
            --- native_read_tsc
                native_sched_clock
                sched_clock
               |          
               |--74.99%-- trace_clock_local
               |          rb_reserve_next_event
               |          ring_buffer_lock_reserve
               |          trace_buffer_lock_reserve
               |          trace_current_buffer_lock_reserve
               |          |          
               |          |--65.74%-- ftrace_raw_event_sched_stat_runtime
               |          |          update_curr
               |          |          |          
               |          |          |--50.05%-- 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
               |          |          |          
               |          |           --49.95%-- dequeue_entity
               |          |                     dequeue_task_fair
               |          |                     dequeue_task
               |          |                     deactivate_task
               |          |                     thread_return
               |          |                     sys_semtimedop
               |          |                     sys_semop
               |          |                     system_call
               |          |                     __GI___semop
               |          |          
               |           --34.26%-- ftrace_raw_event_id_softirq
               |                     ftrace_raw_event_softirq_raise
               |                     raise_softirq
               |                     rcu_check_callbacks
               |                     update_process_times
               |                     tick_sched_timer
               |                     __run_hrtimer
               |                     hrtimer_interrupt
               |                     smp_apic_timer_interrupt
               |                     apic_timer_interrupt
               |                     slot_deform_tuple
               |          
                --25.01%-- sched_clock_cpu
                          update_rq_clock
                          enqueue_task
                          activate_task
                          try_to_wake_up
                          wake_up_process
                          update_queue
                          sys_semtimedop
                          sys_semop
                          system_call
                          __GI___semop

     0.04%  postgres  [kernel.kallsyms]              [k] ftrace_raw_event_id_sched_stat_template  
            |
            --- ftrace_raw_event_id_sched_stat_template
               |          
               |--75.02%-- ftrace_raw_event_sched_stat_sleep
               |          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
               |          
                --24.98%-- 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

     0.04%  postgres  libc-2.12.so                   [.] __GI___libc_lseek64                      
            |
            --- __GI___libc_lseek64

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

     0.04%  postgres  [kernel.kallsyms]              [k] cpumask_next_and                         
            |
            --- cpumask_next_and
               |          
               |--75.36%-- find_busiest_group
               |          thread_return
               |          sys_semtimedop
               |          sys_semop
               |          system_call
               |          __GI___semop
               |          
                --24.64%-- thread_return
                          sys_semtimedop
                          sys_semop
                          system_call
                          __GI___semop

     0.04%  postgres  [kernel.kallsyms]              [k] _spin_lock_irq                           
            |
            --- _spin_lock_irq
                schedule
                sys_semtimedop
                sys_semop
                system_call
                __GI___semop

     0.04%  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

     0.04%  postgres  [kernel.kallsyms]              [k] tracing_generic_entry_update             
            |
            --- tracing_generic_entry_update
                trace_buffer_lock_reserve
                trace_current_buffer_lock_reserve
               |          
               |--74.58%-- ftrace_raw_event_sched_stat_runtime
               |          update_curr
               |          |          
               |          |--68.00%-- put_prev_task_fair
               |          |          schedule
               |          |          sys_semtimedop
               |          |          sys_semop
               |          |          system_call
               |          |          __GI___semop
               |          |          
               |           --32.00%-- dequeue_entity
               |                     dequeue_task_fair
               |                     dequeue_task
               |                     deactivate_task
               |                     thread_return
               |                     sys_semtimedop
               |                     sys_semop
               |                     system_call
               |                     __GI___semop
               |          
                --25.42%-- ftrace_raw_event_id_softirq
                          ftrace_raw_event_softirq_raise
                          raise_softirq
                          rcu_check_callbacks
                          update_process_times
                          tick_sched_timer
                          __run_hrtimer
                          hrtimer_interrupt
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          s_lock

     0.03%  postgres  [kernel.kallsyms]              [k] sys_semop                                
            |
            --- sys_semop
               |          
               |--66.40%-- __GI___semop
               |          
                --33.60%-- system_call
                          __GI___semop

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

     0.03%  postgres  [kernel.kallsyms]              [k] sysret_check                             
            |
            --- sysret_check
               |          
               |--67.68%-- __GI___libc_lseek64
               |          
                --32.32%-- __GI___libc_read

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

     0.03%  postgres  postgres                       [.] palloc                                   
            |
            --- palloc
               |          
               |--33.46%-- networkjoinsel
                --66.54%-- [...]

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

     0.03%  postgres  postgres                       [.] add_var                                  
            |
            --- add_var
               |          
               |--67.26%-- 0x0
                --32.74%-- [...]

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

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

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

     0.03%  postgres  [kernel.kallsyms]              [k] rb_end_commit                            
            |
            --- rb_end_commit
                ring_buffer_unlock_commit
                trace_nowake_buffer_unlock_commit
               |          
               |--34.02%-- ftrace_raw_event_id_softirq
               |          ftrace_raw_event_softirq_raise
               |          raise_softirq
               |          run_local_timers
               |          update_process_times
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          bcTruelen
               |          
               |--33.32%-- ftrace_raw_event_id_sched_stat_template
               |          ftrace_raw_event_sched_stat_sleep
               |          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
               |          
                --32.66%-- 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

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

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

     0.03%  postgres  [kernel.kallsyms]              [k] resched_task                             
            |
            --- resched_task
                check_preempt_curr
                try_to_wake_up
                wake_up_process
                update_queue
                sys_semtimedop
                sys_semop
                system_call
                __GI___semop

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

     0.03%  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

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

     0.03%  postgres  [kernel.kallsyms]              [k] unroll_tree_refs                         
            |
            --- unroll_tree_refs
               |          
               |--66.86%-- __audit_syscall_exit
               |          sysret_audit
               |          |          
               |          |--50.04%-- __GI___semop
               |          |          
               |           --49.96%-- __GI___libc_lseek64
               |          
                --33.14%-- sysret_audit
                          __GI___semop

     0.03%  postgres  [kernel.kallsyms]              [k] ring_buffer_unlock_commit                
            |
            --- ring_buffer_unlock_commit
               |          
               |--67.19%-- trace_nowake_buffer_unlock_commit
               |          |          
               |          |--50.65%-- 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
               |          |          
               |           --49.35%-- ftrace_raw_event_id_sched_stat_template
               |                     ftrace_raw_event_sched_stat_sleep
               |                     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
               |          
                --32.81%-- 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

     0.03%  postgres  postgres                       [.] heap_copytuple                           
            |
            --- heap_copytuple
               |          
               |--65.29%-- networkjoinsel
                --34.71%-- [...]

     0.03%  postgres  [kernel.kallsyms]              [k] copy_user_generic                        
            |
            --- copy_user_generic
               |          
               |--68.23%-- generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --31.77%-- file_read_actor
                          generic_file_aio_read
                          do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.03%  postgres  [kernel.kallsyms]              [k] native_sched_clock                       
            |
            --- native_sched_clock
               |          
               |--33.53%-- trace_clock_local
               |          rb_reserve_next_event
               |          ring_buffer_lock_reserve
               |          trace_buffer_lock_reserve
               |          trace_current_buffer_lock_reserve
               |          ftrace_raw_event_sched_stat_runtime
               |          update_curr
               |          dequeue_entity
               |          dequeue_task_fair
               |          dequeue_task
               |          deactivate_task
               |          thread_return
               |          sys_semtimedop
               |          sys_semop
               |          system_call
               |          __GI___semop
               |          
               |--33.43%-- sched_clock
               |          sched_clock_cpu
               |          update_rq_clock
               |          dequeue_task
               |          deactivate_task
               |          thread_return
               |          sys_semtimedop
               |          sys_semop
               |          system_call
               |          __GI___semop
               |          
                --33.04%-- sched_clock_cpu
                          update_rq_clock
                          dequeue_task
                          deactivate_task
                          thread_return
                          sys_semtimedop
                          sys_semop
                          system_call
                          __GI___semop

     0.03%  postgres  [kernel.kallsyms]              [k] sys_lseek                                
            |
            --- sys_lseek
                __GI___libc_lseek64

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

     0.03%  postgres  [kernel.kallsyms]              [k] idr_find                                 
            |
            --- idr_find
               |          
               |--65.39%-- ipc_lock
               |          ipc_lock_check
               |          sys_semtimedop
               |          sys_semop
               |          system_call
               |          __GI___semop
               |          
                --34.61%-- ipc_lock_check
                          sys_semtimedop
                          sys_semop
                          system_call
                          __GI___semop

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

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

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

     0.02%  postgres  [kernel.kallsyms]              [k] select_task_rq_fair                      
            |
            --- select_task_rq_fair
                try_to_wake_up
                wake_up_process
                update_queue
                sys_semtimedop
                sys_semop
                system_call
                __GI___semop

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

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

     0.02%  postgres  [kernel.kallsyms]              [k] __percpu_counter_add                     
            |
            --- __percpu_counter_add
                account_user_time
                account_process_tick
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--50.01%-- pgstat_end_function_usage
               |          
                --49.99%-- heap_page_prune_opt

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

     0.02%  postgres  [kernel.kallsyms]              [k] _spin_unlock_irqrestore                  
            |
            --- _spin_unlock_irqrestore
               |          
               |--50.84%-- ntp_tick_length
               |          do_timer
               |          tick_do_update_jiffies64
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          heap_page_prune_opt
               |          
                --49.16%-- try_to_wake_up
                          wake_up_process
                          update_queue
                          sys_semtimedop
                          sys_semop
                          system_call
                          __GI___semop

     0.02%  postgres  [kernel.kallsyms]              [k] account_user_time                        
            |
            --- account_user_time
                account_process_tick
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--50.98%-- bpcharle
               |          
                --49.02%-- LWLockAcquire

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

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

     0.02%  postgres  [kernel.kallsyms]              [k] _cond_resched                            
            |
            --- _cond_resched
               |          
               |--50.10%-- do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --49.90%-- generic_file_aio_read
                          do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

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

     0.02%  postgres  [kernel.kallsyms]              [k] sysret_signal                            
            |
            --- sysret_signal
                __GI___libc_lseek64

     0.02%  postgres  [kernel.kallsyms]              [k] ring_buffer_lock_reserve                 
            |
            --- ring_buffer_lock_reserve
                trace_buffer_lock_reserve
                trace_current_buffer_lock_reserve
               |          
               |--50.02%-- 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
               |          
                --49.98%-- ftrace_raw_event_id_sched_stat_template
                          ftrace_raw_event_sched_stat_sleep
                          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  [kernel.kallsyms]              [k] sched_clock_cpu                          
            |
            --- sched_clock_cpu
                update_rq_clock
               |          
               |--51.22%-- dequeue_task
               |          deactivate_task
               |          thread_return
               |          sys_semtimedop
               |          sys_semop
               |          system_call
               |          __GI___semop
               |          
                --48.78%-- scheduler_tick
                          update_process_times
                          tick_sched_timer
                          __run_hrtimer
                          hrtimer_interrupt
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          ReadBuffer_common

     0.02%  postgres  [kernel.kallsyms]              [k] task_of                                  
            |
            --- task_of
                dequeue_entity
                dequeue_task_fair
                dequeue_task
                deactivate_task
                thread_return
                sys_semtimedop
                sys_semop
                system_call
                __GI___semop

     0.02%  postgres  [kernel.kallsyms]              [k] task_waking_fair                         
            |
            --- task_waking_fair
                try_to_wake_up
                wake_up_process
                update_queue
                sys_semtimedop
                sys_semop
                system_call
                __GI___semop

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

     0.02%  postgres  [kernel.kallsyms]              [k] trace_buffer_lock_reserve                
            |
            --- trace_buffer_lock_reserve
                trace_current_buffer_lock_reserve
               |          
               |--50.74%-- 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
               |          
                --49.26%-- 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                       [.] FileSeek                                 
            |
            --- FileSeek

     0.02%  postgres  [kernel.kallsyms]              [k] select_idle_sibling                      
            |
            --- select_idle_sibling
               |          
               |--50.08%-- try_to_wake_up
               |          wake_up_process
               |          update_queue
               |          sys_semtimedop
               |          sys_semop
               |          system_call
               |          __GI___semop
               |          
                --49.92%-- select_task_rq_fair
                          try_to_wake_up
                          wake_up_process
                          update_queue
                          sys_semtimedop
                          sys_semop
                          system_call
                          __GI___semop

     0.02%  postgres  [kernel.kallsyms]              [k] dequeue_entity                           
            |
            --- dequeue_entity
                dequeue_task_fair
                dequeue_task
                deactivate_task
                thread_return
                sys_semtimedop
                sys_semop
                system_call
                __GI___semop

     0.02%  postgres  postgres                       [.] LookupTupleHashEntry                     
            |
            --- LookupTupleHashEntry
                0x1d4108000000000

     0.02%  postgres  [kernel.kallsyms]              [k] fsnotify                                 
            |
            --- fsnotify
               |          
               |--51.90%-- sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --48.10%-- vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     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  postgres                       [.] BufTableLookup                           
            |
            --- BufTableLookup

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

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

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

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

     0.01%  postgres  postgres                       [.] FunctionCall1Coll                        
            |
            --- FunctionCall1Coll

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

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

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

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

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

     0.01%  postgres  [kernel.kallsyms]              [k] _spin_trylock                            
            |
            --- _spin_trylock
                __rcu_process_callbacks
                rcu_process_callbacks
                __do_softirq
                call_softirq
                do_softirq
                irq_exit
                smp_apic_timer_interrupt
                apic_timer_interrupt
                hash_any

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

     0.01%  postgres  [kernel.kallsyms]              [k] __mnt_want_write                         
            |
            --- __mnt_want_write
                __mnt_want_write_file
                file_update_time
                pipe_write
                do_sync_write
                vfs_write
                sys_write
                system_call
                __write_nocancel

     0.01%  postgres  postgres                       [.] hash_search                              
            |
            --- hash_search
                0x1d4108000000000

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

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

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

     0.01%  postgres  [kernel.kallsyms]              [k] run_timer_softirq                        
            |
            --- run_timer_softirq
                __do_softirq
                call_softirq
                do_softirq
                irq_exit
                smp_apic_timer_interrupt
                apic_timer_interrupt
                heap_getnext

     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_getnext

     0.01%  postgres  [kernel.kallsyms]              [k] tcp_send_delayed_ack                     
            |
            --- tcp_send_delayed_ack
                __tcp_ack_snd_check
                tcp_rcv_established
                tcp_v4_do_rcv
                tcp_v4_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
                try_to_wake_up
                wake_up_process
                update_queue
                sys_semtimedop
                sys_semop
                system_call
                __GI___semop

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

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

     0.01%  postgres  libc-2.12.so                   [.] __GI___semop                             
            |
            --- __GI___semop

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

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

     0.01%  postgres  [kernel.kallsyms]              [k] native_write_msr_safe                    
            |
            --- native_write_msr_safe
                intel_pmu_enable_all
                x86_pmu_enable
                perf_pmu_enable
               |          
               |--99.74%-- 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
               |          LWLockAcquire
                --0.26%-- [...]

     0.01%  postgres  [kernel.kallsyms]              [k] rcu_process_gp_end                       
            |
            --- rcu_process_gp_end
                __rcu_process_callbacks
                rcu_process_callbacks
                __do_softirq
                call_softirq
                do_softirq
                irq_exit
                smp_apic_timer_interrupt
                apic_timer_interrupt
                hash_search_with_hash_value

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

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

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

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

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

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

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

     0.01%  postgres  [kernel.kallsyms]              [k] kfree                                    
            |
            --- kfree
                __audit_syscall_exit
                sysret_audit
                __GI___semop

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

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

     0.01%  postgres  [kernel.kallsyms]              [k] ftrace_raw_event_id_softirq              
            |
            --- ftrace_raw_event_id_softirq
                ftrace_raw_event_softirq_raise
                raise_softirq
                rcu_check_callbacks
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                s_lock

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

     0.01%  postgres  [kernel.kallsyms]              [k] __list_add                               
            |
            --- __list_add
                account_entity_enqueue
                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_task_fair                        
            |
            --- 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                       [.] mdread                                   
            |
            --- mdread

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

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

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

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

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

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

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

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

     0.01%  postgres  libc-2.12.so                   [.] __sigsetjmp                              
            |
            --- __sigsetjmp

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

     0.01%  postgres  [kernel.kallsyms]              [k] ring_buffer_event_data                   
            |
            --- ring_buffer_event_data
                trace_buffer_lock_reserve
                trace_current_buffer_lock_reserve
                ftrace_raw_event_sched_stat_runtime
                update_curr
                enqueue_entity
                enqueue_task_fair
                enqueue_task
                activate_task
                try_to_wake_up
                wake_up_process
                update_queue
                sys_semtimedop
                sys_semop
                system_call
                __GI___semop

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

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

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

     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] hrtimer_interrupt                        
            |
            --- hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                s_lock

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

     0.01%  postgres  [kernel.kallsyms]              [k] mutex_spin_on_owner                      
            |
            --- mutex_spin_on_owner
                __mutex_lock_slowpath
                mutex_lock
                ext4_llseek
                vfs_llseek
                sys_lseek
                system_call
                __GI___libc_lseek64

     0.01%  postgres  [kernel.kallsyms]              [k] account_cfs_rq_runtime                   
            |
            --- account_cfs_rq_runtime
                update_curr
                dequeue_entity
                dequeue_task_fair
                dequeue_task
                deactivate_task
                thread_return
                sys_semtimedop
                sys_semop
                system_call
                __GI___semop

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