# ========
# captured on: Tue Sep 22 15:17:26 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 = { 14 }
# HEADER_CPU_TOPOLOGY info available, use -I to display
# HEADER_NUMA_TOPOLOGY info available, use -I to display
# ========
#
# Samples: 17K of event 'cycles'
# Event count (approx.): 12401172614
#
# Overhead   Command                  Shared Object                                   Symbol
# ........  ........  .............................  .......................................
#
     8.19%  postgres  libc-2.12.so                   [.] memcpy                             
            |
            --- memcpy
               |          
               |--93.97%-- networkjoinsel
                --6.03%-- [...]

     7.64%  postgres  postgres                       [.] slot_deform_tuple                  
            |
            --- slot_deform_tuple

     5.58%  postgres  postgres                       [.] hash_search_with_hash_value        
            |
            --- hash_search_with_hash_value
               |          
               |--2.18%-- 0x1d4108000000000
                --97.82%-- [...]

     4.09%  postgres  postgres                       [.] bpchareq                           
            |
            --- bpchareq

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

     3.57%  postgres  postgres                       [.] ExecProject                        
            |
            --- ExecProject

     3.32%  postgres  postgres                       [.] add_abs                            
            |
            --- add_abs

     2.82%  postgres  postgres                       [.] HeapTupleSatisfiesMVCC             
            |
            --- HeapTupleSatisfiesMVCC

     2.69%  postgres  postgres                       [.] shm_mq_inc_bytes_read              
            |
            --- shm_mq_inc_bytes_read

     2.53%  postgres  postgres                       [.] AllocSetAlloc                      
            |
            --- AllocSetAlloc
               |          
               |--8.03%-- networkjoinsel
                --91.97%-- [...]

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

     2.47%  postgres  [kernel.kallsyms].vsyscall_fn  [.] vread_tsc                          
            |
            --- vread_tsc
               |          
               |--87.99%-- 0x7fff59744814
               |          0x7fff597448bc
               |          __gettimeofday
               |          
                --12.01%-- 0x7fff597448bc
                          __gettimeofday

     2.14%  postgres  postgres                       [.] hash_any                           
            |
            --- hash_any

     2.01%  postgres  postgres                       [.] do_numeric_accum                   
            |
            --- do_numeric_accum
               |          
               |--88.76%-- 0x0
               |          
               |--1.15%-- slot_getsomeattrs
                --10.09%-- [...]

     1.96%  postgres  postgres                       [.] varstr_cmp                         
            |
            --- varstr_cmp

     1.86%  postgres  postgres                       [.] StrategyGetBuffer                  
            |
            --- StrategyGetBuffer

     1.84%  postgres  postgres                       [.] make_result                        
            |
            --- make_result

     1.68%  postgres  [vdso]                         [.] 0x00007fff597448b2                 
            |          
            |--13.44%-- 0x7fff597448d4
            |          __gettimeofday
            |          
            |--12.07%-- 0x7fff5974481f
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--6.55%-- 0x7fff59744826
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--3.45%-- 0x7fff597448e9
            |          __gettimeofday
            |          
            |--3.45%-- 0x7fff5974489b
            |          __gettimeofday
            |          
            |--3.45%-- 0x7fff597448db
            |          __gettimeofday
            |          
            |--3.45%-- 0x7fff597448df
            |          __gettimeofday
            |          
            |--3.45%-- 0x7fff5974482a
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--3.10%-- 0x7fff59744830
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--3.10%-- 0x7fff59744814
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--2.76%-- 0x7fff5974486a
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--2.76%-- 0x7fff597447d1
            |          __gettimeofday
            |          
            |--2.76%-- 0x7fff59744890
            |          
            |--2.42%-- 0x7fff59744811
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--2.42%-- 0x7fff5974480a
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--2.41%-- 0x7fff597447d6
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--2.41%-- 0x7fff597448cd
            |          __gettimeofday
            |          
            |--2.41%-- 0x7fff597448d8
            |          __gettimeofday
            |          
            |--2.41%-- 0x7fff597447fc
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--2.07%-- 0x7fff597447d7
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--1.72%-- 0x7fff597447d0
            |          __gettimeofday
            |          
            |--1.72%-- 0x7fff597448bc
            |          __gettimeofday
            |          
            |--1.72%-- 0x7fff597448c0
            |          __gettimeofday
            |          
            |--1.72%-- 0x7fff597448b2
            |          __gettimeofday
            |          
            |--1.38%-- 0x7fff597447ee
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--1.38%-- 0x7fff597448a1
            |          __gettimeofday
            |          
            |--1.04%-- 0x7fff59744872
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--1.03%-- 0x7fff5974483d
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--1.03%-- 0x7fff59744803
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--0.69%-- 0x7fff597447f9
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--0.69%-- 0x7fff59744806
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--0.69%-- 0x7fff597447e4
            |          0x7fff597448bc
            |          __gettimeofday
            |          
            |--0.69%-- 0x7fff597448a4
            |          __gettimeofday
            |          
            |--0.69%-- 0x7fff5974489d
            |          __gettimeofday
            |          
            |--0.69%-- 0x7fff597448ab
            |          __gettimeofday
             --2.76%-- [...]

     1.61%  postgres  postgres                       [.] advance_aggregates                 
            |
            --- advance_aggregates

     1.56%  postgres  postgres                       [.] shm_mq_receive_bytes               
            |
            --- shm_mq_receive_bytes

     1.31%  postgres  postgres                       [.] advance_transition_function        
            |
            --- advance_transition_function

     1.28%  postgres  [kernel.kallsyms]              [k] copy_user_generic_string           
            |
            --- copy_user_generic_string
                file_read_actor
                generic_file_aio_read
                do_sync_read
                vfs_read
                sys_read
                system_call
                __GI___libc_read

     1.22%  postgres  postgres                       [.] ExecClearTuple                     
            |
            --- ExecClearTuple

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

     1.14%  postgres  postgres                       [.] heap_getnext                       
            |
            --- heap_getnext

     1.10%  postgres  postgres                       [.] int64_to_numericvar                
            |
            --- int64_to_numericvar

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

     1.00%  postgres  postgres                       [.] ExecMakeFunctionResultNoSets       
            |
            --- ExecMakeFunctionResultNoSets

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

     0.88%  postgres  postgres                       [.] AllocSetFree                       
            |
            --- AllocSetFree

     0.84%  postgres  postgres                       [.] pfree                              
            |
            --- pfree

     0.84%  postgres  postgres                       [.] shm_mq_receive                     
            |
            --- shm_mq_receive

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

     0.81%  postgres  postgres                       [.] LWLockAcquire                      
            |
            --- LWLockAcquire

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

     0.77%  postgres  postgres                       [.] palloc                             
            |
            --- palloc
               |          
               |--13.53%-- networkjoinsel
                --86.47%-- [...]

     0.77%  postgres  postgres                       [.] int8_avg_accum                     
            |
            --- int8_avg_accum

     0.75%  postgres  postgres                       [.] execTuplesMatch                    
            |
            --- execTuplesMatch

     0.71%  postgres  postgres                       [.] init_var_from_num                  
            |
            --- init_var_from_num
               |          
               |--62.29%-- 0x0
               |          
                --37.71%-- slot_getsomeattrs

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

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

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

     0.60%  postgres  postgres                       [.] TupleHashTableHash                 
            |
            --- TupleHashTableHash
               |          
               |--15.39%-- 0x1d72000
                --84.61%-- [...]

     0.60%  postgres  postgres                       [.] pg_detoast_datum_packed            
            |
            --- pg_detoast_datum_packed

     0.60%  postgres  postgres                       [.] alloc_var                          
            |
            --- alloc_var

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

     0.52%  postgres  postgres                       [.] ExecQual                           
            |
            --- ExecQual

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

     0.48%  postgres  postgres                       [.] DirectFunctionCall1Coll            
            |
            --- DirectFunctionCall1Coll

     0.48%  postgres  postgres                       [.] FunctionCall2Coll                  
            |
            --- FunctionCall2Coll

     0.45%  postgres  postgres                       [.] int4_sum                           
            |
            --- int4_sum

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

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

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

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

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

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

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

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

     0.34%  postgres  postgres                       [.] LookupTupleHashEntry               
            |
            --- LookupTupleHashEntry
               |          
               |--72.88%-- 0x1d4108000000000
                --27.12%-- [...]

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

     0.31%  postgres  postgres                       [.] add_var                            
            |
            --- add_var
               |          
               |--50.01%-- 0x0
                --49.99%-- [...]

     0.31%  postgres  postgres                       [.] int8_numeric                       
            |
            --- int8_numeric

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

     0.28%  postgres  postgres                       [.] heap_copytuple                     
            |
            --- heap_copytuple
               |          
               |--72.94%-- networkjoinsel
                --27.06%-- [...]

     0.26%  postgres  postgres                       [.] FunctionCall1Coll                  
            |
            --- FunctionCall1Coll

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

     0.25%  postgres  [kernel.kallsyms]              [k] find_get_page                      
            |
            --- find_get_page
               |          
               |--95.36%-- generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --4.64%-- do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.24%  postgres  libc-2.12.so                   [.] __gettimeofday                     
            |
            --- __gettimeofday

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

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

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

     0.20%  postgres  postgres                       [.] UnpinBuffer.clone.0                
            |
            --- UnpinBuffer.clone.0

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

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

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

     0.17%  postgres  postgres                       [.] hash_search                        
            |
            --- hash_search
               |          
               |--51.74%-- 0x1d4108000000000
               |          
                --48.26%-- 0x1d72000

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

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

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

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

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

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

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

     0.12%  postgres  postgres                       [.] pgstat_end_function_usage          
            |
            --- pgstat_end_function_usage
               |          
               |--5.00%-- 0xfaf7c00497ac1
               |          
               |--5.00%-- 0x351ec00497ac1
               |          
               |--5.00%-- 0x155cc800497ac1
               |          
               |--5.00%-- 0x844b00497ac1
               |          
               |--4.99%-- 0xbff6a00497ac1
                --75.00%-- [...]

     0.11%  postgres  [kernel.kallsyms]              [k] put_page                           
            |
            --- put_page
                generic_file_aio_read
                do_sync_read
                vfs_read
                sys_read
                system_call
                __GI___libc_read

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

     0.10%  postgres  [kernel.kallsyms]              [k] mutex_lock                         
            |
            --- mutex_lock
                ext4_llseek
                vfs_llseek
                sys_lseek
                system_call
                __GI___libc_lseek64

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

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

     0.08%  postgres  [kernel.kallsyms]              [k] mutex_unlock                       
            |
            --- mutex_unlock
                ext4_llseek
                vfs_llseek
                sys_lseek
                system_call
                __GI___libc_lseek64

     0.08%  postgres  [kernel.kallsyms]              [k] system_call                        
            |
            --- system_call
               |          
               |--53.84%-- __GI___libc_lseek64
               |          
               |--38.47%-- __GI___libc_read
               |          
                --7.69%-- make_result

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

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

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

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

     0.06%  postgres  [kernel.kallsyms]              [k] __mutex_lock_slowpath              
            |
            --- __mutex_lock_slowpath
               |          
               |--89.98%-- mutex_lock
               |          ext4_llseek
               |          vfs_llseek
               |          sys_lseek
               |          system_call
               |          __GI___libc_lseek64
               |          
                --10.02%-- ext4_llseek
                          vfs_llseek
                          sys_lseek
                          system_call
                          __GI___libc_lseek64

     0.06%  postgres  [kernel.kallsyms]              [k] radix_tree_lookup_slot             
            |
            --- radix_tree_lookup_slot
               |          
               |--60.56%-- find_get_page
               |          generic_file_aio_read
               |          do_sync_read
               |          vfs_read
               |          sys_read
               |          system_call
               |          __GI___libc_read
               |          
                --39.44%-- generic_file_aio_read
                          do_sync_read
                          vfs_read
                          sys_read
                          system_call
                          __GI___libc_read

     0.05%  postgres  [ext4]                         [k] ext4_llseek                        
            |
            --- ext4_llseek
                vfs_llseek
                sys_lseek
                system_call
                __GI___libc_lseek64

     0.05%  postgres  [kernel.kallsyms]              [k] _spin_lock                         
            |
            --- _spin_lock
               |          
               |--55.55%-- thread_return
               |          sys_semtimedop
               |          sys_semop
               |          system_call
               |          __GI___semop
               |          
               |--22.23%-- scheduler_tick
               |          update_process_times
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--50.01%-- slot_getattr
               |          |          
               |           --49.99%-- s_lock
               |          
               |--11.11%-- ipc_lock
               |          ipc_lock_check
               |          sys_semtimedop
               |          sys_semop
               |          system_call
               |          __GI___semop
               |          
                --11.11%-- __mutex_unlock_slowpath
                          mutex_unlock
                          ext4_llseek
                          vfs_llseek
                          sys_lseek
                          system_call
                          __GI___libc_lseek64

     0.05%  postgres  libc-2.12.so                   [.] __memcmp_sse4_1                    
            |
            --- __memcmp_sse4_1

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

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

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

     0.03%  postgres  [kernel.kallsyms]              [k] audit_syscall_entry                
            |
            --- audit_syscall_entry
               |          
               |--83.31%-- auditsys
               |          |          
               |          |--80.00%-- __GI___libc_lseek64
               |          |          
               |           --20.00%-- __GI___libc_read
               |          
                --16.69%-- __GI___libc_read

     0.03%  postgres  postgres                       [.] memcpy@plt                         
            |
            --- memcpy@plt
                networkjoinsel

     0.03%  postgres  [kernel.kallsyms]              [k] _spin_lock_irqsave                 
            |
            --- _spin_lock_irqsave
               |          
               |--79.99%-- ntp_tick_length
               |          do_timer
               |          tick_do_update_jiffies64
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--25.01%-- __gettimeofday
               |          |          
               |          |--25.01%-- bcTruelen
               |          |          
               |          |--24.99%-- ExecMakeFunctionResultNoSets
               |          |          
               |           --24.98%-- ExecStoreMinimalTuple
               |          
                --20.01%-- rcu_process_dyntick
                          force_quiescent_state
                          __rcu_process_callbacks
                          rcu_process_callbacks
                          __do_softirq
                          call_softirq
                          do_softirq
                          irq_exit
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          0x7fff59744890

     0.03%  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

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

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

     0.02%  postgres  [kernel.kallsyms]              [k] sys_lseek                          
            |
            --- sys_lseek
               |          
               |--75.00%-- __GI___libc_lseek64
               |          
                --25.00%-- system_call
                          __GI___libc_lseek64

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

     0.02%  postgres  [kernel.kallsyms]              [k] __audit_syscall_exit               
            |
            --- __audit_syscall_exit
                sysret_audit
               |          
               |--74.98%-- __GI___libc_read
               |          
                --25.02%-- __GI___semop

     0.02%  postgres  [kernel.kallsyms]              [k] sysret_check                       
            |
            --- sysret_check
               |          
               |--50.01%-- __GI___libc_lseek64
               |          
                --49.99%-- __GI___libc_read

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

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

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

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

     0.02%  postgres  [kernel.kallsyms]              [k] update_cfs_shares                  
            |
            --- update_cfs_shares
                task_tick_fair
                scheduler_tick
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--33.34%-- AllocSetAlloc
               |          
               |--33.34%-- shm_mq_receive_bytes
               |          
                --33.32%-- bcTruelen

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

     0.02%  postgres  [kernel.kallsyms]              [k] __do_softirq                       
            |
            --- __do_softirq
                call_softirq
                do_softirq
                irq_exit
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--33.34%-- vread_tsc
               |          
               |--33.33%-- bpchareq
               |          
                --33.32%-- memcpy

     0.02%  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
               |          
               |--33.33%-- hash_search_with_hash_value
               |          
               |--33.33%-- slot_deform_tuple
               |          
                --33.33%-- slot_getsomeattrs

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

     0.02%  postgres  [kernel.kallsyms]              [k] rcu_process_callbacks              
            |
            --- rcu_process_callbacks
               |          
               |--66.67%-- __do_softirq
               |          call_softirq
               |          do_softirq
               |          irq_exit
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--50.01%-- execTuplesMatch
               |          |          
               |           --49.99%-- ExecStoreTuple
               |          
                --33.33%-- call_softirq
                          do_softirq
                          irq_exit
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          alloc_var

     0.02%  postgres  [kernel.kallsyms]              [k] do_softirq                         
            |
            --- do_softirq
               |          
               |--66.67%-- smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          shm_mq_inc_bytes_read
               |          
                --33.33%-- irq_exit
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          shm_mq_receive_bytes

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

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

     0.02%  postgres  [kernel.kallsyms]              [k] trace_clock_local                  
            |
            --- trace_clock_local
                rb_reserve_next_event
                ring_buffer_lock_reserve
                trace_buffer_lock_reserve
                trace_current_buffer_lock_reserve
                ftrace_raw_event_id_softirq
               |          
               |--66.69%-- ftrace_raw_event_softirq_exit
               |          __do_softirq
               |          call_softirq
               |          do_softirq
               |          irq_exit
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          |          
               |          |--50.01%-- HeapTupleSatisfiesMVCC
               |          |          
               |           --49.99%-- AllocSetFree
               |          
                --33.31%-- 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

     0.02%  postgres  [kernel.kallsyms]              [k] kfree                              
            |
            --- kfree
                __audit_syscall_exit
                sysret_audit
               |          
               |--66.64%-- __GI___semop
               |          
                --33.36%-- __GI___libc_lseek64

     0.02%  postgres  [kernel.kallsyms]              [k] sys_read                           
            |
            --- sys_read
               |          
               |--66.60%-- system_call
               |          __GI___libc_read
               |          
                --33.40%-- __GI___libc_read

     0.01%  postgres  [kernel.kallsyms]              [k] apic_timer_interrupt               
            |
            --- apic_timer_interrupt
               |          
               |--50.01%-- slot_deform_tuple
               |          
                --49.99%-- sys_semtimedop
                          sys_semop
                          system_call
                          __GI___semop

     0.01%  postgres  [kernel.kallsyms]              [k] trace_nowake_buffer_unlock_commit  
            |
            --- trace_nowake_buffer_unlock_commit
               |          
               |--50.01%-- ftrace_raw_event_softirq_exit
               |          __do_softirq
               |          call_softirq
               |          do_softirq
               |          irq_exit
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          ExecStoreTuple
               |          
                --49.99%-- 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
                          ExecProject

     0.01%  postgres  [kernel.kallsyms]              [k] __mutex_unlock_slowpath            
            |
            --- __mutex_unlock_slowpath
                mutex_unlock
                ext4_llseek
                vfs_llseek
                sys_lseek
                system_call
                __GI___libc_lseek64

     0.01%  postgres  [kernel.kallsyms]              [k] run_timer_softirq                  
            |
            --- run_timer_softirq
               |          
               |--50.01%-- call_softirq
               |          do_softirq
               |          irq_exit
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          MemoryContextReset
               |          
                --49.99%-- __do_softirq
                          call_softirq
                          do_softirq
                          irq_exit
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          bcTruelen

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

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

     0.01%  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
               |          
               |--50.01%-- XidInMVCCSnapshot
               |          
                --49.99%-- vread_tsc

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

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

     0.01%  postgres  [kernel.kallsyms]              [k] ftrace_trace_stack                 
            |
            --- ftrace_trace_stack
                ftrace_raw_event_id_softirq
                ftrace_raw_event_softirq_raise
                raise_softirq
                run_local_timers
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
               |          
               |--50.00%-- ExecClearTuple
               |          
                --50.00%-- 0x7fff597448d4

     0.01%  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
               |          
               |--50.01%-- AllocSetAlloc
               |          
                --49.99%-- shm_mq_inc_bytes_read

     0.01%  postgres  [kernel.kallsyms]              [k] path_put                           
            |
            --- path_put
               |          
               |--50.02%-- __audit_syscall_exit
               |          sysret_audit
               |          __GI___libc_lseek64
               |          
                --49.98%-- sysret_audit
                          __GI___libc_read

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

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

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

     0.01%  postgres  [kernel.kallsyms]              [k] fget_light                         
            |
            --- fget_light
                sys_lseek
                system_call
                __GI___libc_lseek64

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

     0.01%  postgres  [kernel.kallsyms]              [k] tracing_generic_entry_update       
            |
            --- tracing_generic_entry_update
                trace_buffer_lock_reserve
                trace_current_buffer_lock_reserve
                ftrace_raw_event_id_softirq
                ftrace_raw_event_softirq_raise
                raise_softirq
               |          
               |--50.01%-- run_local_timers
               |          update_process_times
               |          tick_sched_timer
               |          __run_hrtimer
               |          hrtimer_interrupt
               |          smp_apic_timer_interrupt
               |          apic_timer_interrupt
               |          varstr_cmp
               |          
                --49.99%-- rcu_check_callbacks
                          update_process_times
                          tick_sched_timer
                          __run_hrtimer
                          hrtimer_interrupt
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          slot_getsomeattrs

     0.01%  postgres  [kernel.kallsyms]              [k] native_read_tsc                    
            |
            --- native_read_tsc
               |          
               |--50.02%-- native_sched_clock
               |          sched_clock
               |          trace_clock_local
               |          rb_reserve_next_event
               |          ring_buffer_lock_reserve
               |          trace_buffer_lock_reserve
               |          trace_current_buffer_lock_reserve
               |          ftrace_raw_event_id_softirq
               |          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
               |          memcpy
               |          
                --49.98%-- read_tsc
                          ktime_get
                          tick_dev_program_event
                          tick_program_event
                          hrtimer_interrupt
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          slot_deform_tuple

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

     0.01%  postgres  [kernel.kallsyms]              [k] native_apic_mem_write              
            |
            --- native_apic_mem_write
               |          
               |--50.08%-- apic_timer_interrupt
               |          PinBuffer
               |          
                --49.92%-- clockevents_program_event
                          tick_dev_program_event
                          tick_program_event
                          hrtimer_interrupt
                          smp_apic_timer_interrupt
                          apic_timer_interrupt
                          slot_deform_tuple

     0.01%  postgres  [kernel.kallsyms]              [k] update_curr                        
            |
            --- update_curr
               |          
               |--50.04%-- dequeue_entity
               |          dequeue_task_fair
               |          dequeue_task
               |          deactivate_task
               |          thread_return
               |          sys_semtimedop
               |          sys_semop
               |          system_call
               |          __GI___semop
               |          
                --49.96%-- 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                       [.] FileSeek                           
            |
            --- FileSeek

     0.01%  postgres  [kernel.kallsyms]              [k] ring_buffer_lock_reserve           
            |
            --- ring_buffer_lock_reserve
                trace_buffer_lock_reserve
                trace_current_buffer_lock_reserve
               |          
               |--50.20%-- 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
               |          
                --49.80%-- 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

     0.01%  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
               |          
               |--50.83%-- memcpy
               |          
                --49.17%-- FunctionCall2Coll

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

     0.01%  postgres  [kernel.kallsyms]              [k] lru_cache_add_lru                  
            |
            --- lru_cache_add_lru
                page_add_new_anon_rmap
                handle_pte_fault
                handle_mm_fault
                __do_page_fault
                do_page_fault
                page_fault
                palloc0

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

     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
                advance_aggregates

     0.01%  postgres  [kernel.kallsyms]              [k] dyntick_save_progress_counter      
            |
            --- dyntick_save_progress_counter
                rcu_process_dyntick
                force_quiescent_state
                __rcu_process_callbacks
                rcu_process_callbacks
                __do_softirq
                call_softirq
                do_softirq
                irq_exit
                smp_apic_timer_interrupt
                apic_timer_interrupt
                varstr_cmp

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

     0.01%  postgres  [kernel.kallsyms]              [k] rcu_process_dyntick                
            |
            --- rcu_process_dyntick
                force_quiescent_state
                __rcu_process_callbacks
                rcu_process_callbacks
                __do_softirq
                call_softirq
                do_softirq
                irq_exit
                smp_apic_timer_interrupt
                apic_timer_interrupt
                hash_search

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

     0.01%  postgres  [kernel.kallsyms]              [k] ring_buffer_unlock_commit          
            |
            --- ring_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
                PinBuffer

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

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

     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  [kernel.kallsyms]              [k] run_rebalance_domains              
            |
            --- run_rebalance_domains
                call_softirq
                do_softirq
                irq_exit
                smp_apic_timer_interrupt
                apic_timer_interrupt
                heapgetpage

     0.01%  postgres  [kernel.kallsyms]              [k] call_softirq                       
            |
            --- call_softirq
                irq_exit
                smp_apic_timer_interrupt
                apic_timer_interrupt
                shm_mq_receive_bytes

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

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

     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
                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
                LWLockAcquire

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

     0.01%  postgres  [kernel.kallsyms]              [k] _spin_lock_irq                     
            |
            --- _spin_lock_irq
                activate_page
                mark_page_accessed
                unmap_vmas
                unmap_region
                do_munmap
                sys_munmap
                system_call
                __GI___munmap

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

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

     0.01%  postgres  [kernel.kallsyms]              [k] x86_pmu_enable                     
            |
            --- x86_pmu_enable
                perf_pmu_enable
                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
                init_var_from_num

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

     0.01%  postgres  [kernel.kallsyms]              [k] __rb_reserve_next                  
            |
            --- __rb_reserve_next
                rb_reserve_next_event
                ring_buffer_lock_reserve
                trace_buffer_lock_reserve
                trace_current_buffer_lock_reserve
                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
                heap_getnext

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

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

     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
                AllocSetAlloc

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

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

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

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

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

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

     0.01%  postgres  [kernel.kallsyms]              [k] vfs_llseek                         
            |
            --- vfs_llseek
                sys_lseek
                system_call
                __GI___libc_lseek64

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

     0.01%  postgres  [kernel.kallsyms]              [k] perf_adjust_freq_unthr_context     
            |
            --- perf_adjust_freq_unthr_context
                perf_event_task_tick
                scheduler_tick
                update_process_times
                tick_sched_timer
                __run_hrtimer
                hrtimer_interrupt
                smp_apic_timer_interrupt
                apic_timer_interrupt
                FileAccess

     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
                bpchareq

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

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

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

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

     0.01%  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

     0.01%  postgres  [kernel.kallsyms]              [k] clear_page_c                       
            |
            --- clear_page_c
                __alloc_pages_nodemask
                alloc_pages_vma
                handle_pte_fault
                handle_mm_fault
                __do_page_fault
                do_page_fault
                page_fault
                palloc0

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

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

     0.01%  postgres  [kernel.kallsyms]              [k] page_add_new_anon_rmap             
            |
            --- page_add_new_anon_rmap
                handle_pte_fault
                handle_mm_fault
                __do_page_fault
                do_page_fault
                page_fault
                palloc0

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

     0.01%  postgres  [kernel.kallsyms]              [k] __do_fault                         
            |
            --- __do_fault
                handle_pte_fault
                handle_mm_fault
                __do_page_fault
                do_page_fault
                page_fault
                memcpy
                networkjoinsel

     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  [kernel.kallsyms]              [k] free_hot_cold_page                 
            |
            --- free_hot_cold_page
                __pagevec_free
                release_pages
                free_pages_and_swap_cache
                unmap_region
                do_munmap
                sys_brk
                system_call
                __brk

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

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

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

     0.01%  postgres  [kernel.kallsyms]              [k] free_pcppages_bulk                 
            |
            --- free_pcppages_bulk
                free_hot_cold_page
                __pagevec_free
                release_pages
                __pagevec_release
                shmem_pagevec_release
                shmem_truncate_range
                shmem_delete_inode
                generic_delete_inode
                iput
                do_unlinkat
                sys_unlink
                system_call
                __GI___unlink
                dsm_impl_op

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

     0.00%  postgres  [kernel.kallsyms]              [k] native_write_msr_safe              
            |
            --- native_write_msr_safe
                intel_pmu_enable_all
                x86_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)
#
