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From: Feng Tang <feng.tang@intel.com>
To: "Luck, Tony" <tony.luck@intel.com>
Cc: Borislav Petkov <bp@suse.de>,
	kernel test robot <rong.a.chen@intel.com>,
	LKML <linux-kernel@vger.kernel.org>,
	lkp@lists.01.org
Subject: Re: [LKP] Re: [x86/mce] 1de08dccd3: will-it-scale.per_process_ops -14.1% regression
Date: Fri, 21 Aug 2020 10:02:59 +0800	[thread overview]
Message-ID: <20200821020259.GA90000@shbuild999.sh.intel.com> (raw)
In-Reply-To: <20200819020437.GA2605@shbuild999.sh.intel.com>

[-- Attachment #1: Type: text/plain, Size: 32846 bytes --]

On Wed, Aug 19, 2020 at 10:04:37AM +0800, Feng Tang wrote:
> > We do have some DEFINE_PER_CPU data objects of type "struct mce":
> > 
> > $ git grep 'DEFINE_PER_CPU(struct mce,'
> > arch/x86/kernel/cpu/mce/core.c:static DEFINE_PER_CPU(struct mce, mces_seen);
> > arch/x86/kernel/cpu/mce/core.c:DEFINE_PER_CPU(struct mce, injectm);
> > 
> > Maybe making those slightly bigger has pushed some other per_cpu object
> > into an unfortunate alignment where some frequently used data is now
> > split between two cache lines instead of sitting in one?
> 
> Yes, I also checked the percpu data part of kernel System map, seems
> it only affects alignments of several variables, from 'mce_pooll_banks'
> to 'tsc_adjust', and the alignment restores for 'lapic_events', but I
> can't see any of them could be related to this malloc microbenchmark
> 	
> old map:
> 
> 	0000000000018c60 d mces_seen
> 	0000000000018ce0 D injectm
> 	0000000000018d58 D mce_poll_banks
> 	0000000000018d60 D mce_poll_count
> 	0000000000018d64 D mce_exception_count
> 	0000000000018d68 D mce_device
> 	0000000000018d70 d cmci_storm_state
> 	0000000000018d74 d cmci_storm_cnt
> 	0000000000018d78 d cmci_time_stamp
> 	0000000000018d80 d cmci_backoff_cnt
> 	0000000000018d88 d mce_banks_owned
> 	0000000000018d90 d smca_misc_banks_map
> 	0000000000018d94 d bank_map
> 	0000000000018d98 d threshold_banks
> 	0000000000018da0 d thermal_state
> 	0000000000019260 D pqr_state
> 	0000000000019270 d arch_prev_mperf
> 	0000000000019278 d arch_prev_aperf
> 	0000000000019280 D arch_freq_scale
> 	00000000000192a0 d tsc_adjust
> 	00000000000192c0 d lapic_events
> 
> new map:
> 
> 	0000000000018c60 d mces_seen
> 	0000000000018ce0 D injectm
> 	0000000000018d60 D mce_poll_banks
> 	0000000000018d68 D mce_poll_count
> 	0000000000018d6c D mce_exception_count
> 	0000000000018d70 D mce_device
> 	0000000000018d78 d cmci_storm_state
> 	0000000000018d7c d cmci_storm_cnt
> 	0000000000018d80 d cmci_time_stamp
> 	0000000000018d88 d cmci_backoff_cnt
> 	0000000000018d90 d mce_banks_owned
> 	0000000000018d98 d smca_misc_banks_map
> 	0000000000018d9c d bank_map
> 	0000000000018da0 d threshold_banks
> 	0000000000018dc0 d thermal_state
> 	0000000000019280 D pqr_state
> 	0000000000019290 d arch_prev_mperf
> 	0000000000019298 d arch_prev_aperf
> 	00000000000192a0 D arch_freq_scale
> 	00000000000192c0 d tsc_adjust
> 	0000000000019300 d lapic_events
> 
> > Can you collect some perf trace data for the benchmark when running
> > on kernels with kflags as __u32 and __u64 (looks to be the minimal
> > possible change that you found that still exhibits this problem).
> >
> > We'd like to find out which kernel functions are burning extra CPU
> > cycles and maybe understand why.

I can only found the old kernels for raw tip/ras/core branch, which reproduced
this regressions.

  1de08dccd383 x86/mce: Add a struct mce.kflags field
  9554bfe403bd x86/mce: Convert the CEC to use the MCE notifier

And strange thing is after using gcc9 and debian10 rootfs, with same commits
the regression turns to a improvement, though the trend keeps, that if we
changes the kflags from __u64 to __u32, the performance will be no change.

Following is the comparing of regression, I also attached the perf-profile
for old and new commit (let me know if you need more data)


9554bfe403bdfc08 1de08dccd383482a3e88845d355 
---------------- --------------------------- 
         %stddev     %change         %stddev
             \          |                \  
    192362           -15.1%     163343        will-it-scale.287.processes
      0.91            +0.2%       0.92        will-it-scale.287.processes_idle
    669.67           -15.1%     568.50        will-it-scale.per_process_ops
    309.97            +0.2%     310.74        will-it-scale.time.elapsed_time
    309.97            +0.2%     310.74        will-it-scale.time.elapsed_time.max
      0.67 ±141%    +200.0%       2.00 ± 50%  will-it-scale.time.involuntary_context_switches
      9921            +0.8%      10004        will-it-scale.time.maximum_resident_set_size
      6110            +0.3%       6130        will-it-scale.time.minor_page_faults
      4096            +0.0%       4096        will-it-scale.time.page_size
      0.18 ±  2%      +1.9%       0.18 ±  5%  will-it-scale.time.system_time
      0.25 ±  3%      +0.0%       0.25 ±  4%  will-it-scale.time.user_time
     73.00           +12.3%      82.00 ±  3%  will-it-scale.time.voluntary_context_switches
    192362           -15.1%     163343        will-it-scale.workload
    366.22            +0.3%     367.20        uptime.boot
     15417 ±  4%      +0.8%      15533        uptime.idle
 1.347e+09 ±  2%      -1.9%  1.321e+09        cpuidle.C1.time
   2623112 ±  7%      +5.7%    2773573        cpuidle.C1.usage
    532385 ± 70%     -98.7%       7012 ± 13%  cpuidle.POLL.time
     11803 ± 72%     -96.7%     392.50 ± 13%  cpuidle.POLL.usage
      1.44 ±  4%      +0.1        1.52        mpstat.cpu.all.idle%
      0.00 ± 41%      +0.0        0.00 ± 19%  mpstat.cpu.all.soft%
     98.01            -0.0       97.98        mpstat.cpu.all.sys%
      0.55 ±  3%      -0.1        0.50        mpstat.cpu.all.usr%
      0.00          -100.0%       0.00        numa-numastat.node0.interleave_hit
   1.2e+08           -14.5%  1.026e+08        numa-numastat.node0.local_node
   1.2e+08           -14.5%  1.026e+08        numa-numastat.node0.numa_hit
      0.00          -100.0%       0.00        numa-numastat.node0.other_node
      0.00          -100.0%       0.00        numa-numastat.node1.interleave_hit
      0.00          -100.0%       0.00        numa-numastat.node1.local_node
      0.00          -100.0%       0.00        numa-numastat.node1.numa_hit
      0.00          -100.0%       0.00        numa-numastat.node1.other_node
    309.97            +0.2%     310.74        time.elapsed_time
    309.97            +0.2%     310.74        time.elapsed_time.max
      0.67 ±141%    +200.0%       2.00 ± 50%  time.involuntary_context_switches
      9921            +0.8%      10004        time.maximum_resident_set_size
      6110            +0.3%       6130        time.minor_page_faults
      4096            +0.0%       4096        time.page_size
      0.18 ±  2%      +1.9%       0.18 ±  5%  time.system_time
      0.25 ±  3%      +0.0%       0.25 ±  4%  time.user_time
     73.00           +12.3%      82.00 ±  3%  time.voluntary_context_switches
      1.00           +50.0%       1.50 ± 33%  vmstat.cpu.id
     97.00            +0.0%      97.00        vmstat.cpu.sy
      0.00          -100.0%       0.00        vmstat.cpu.us
      0.00          -100.0%       0.00        vmstat.io.bi
      4.00            +0.0%       4.00        vmstat.memory.buff
   1574390            -0.1%    1573361        vmstat.memory.cache
  79173849            +0.0%   79177727        vmstat.memory.free
    282.33            -0.1%     282.00        vmstat.procs.r
      2760            -0.4%       2749        vmstat.system.cs
    364380 ± 12%      -1.4%     359417        vmstat.system.in
     10.07            -8.7%       9.20        perf-stat.i.MPKI
 1.005e+10            +1.6%  1.022e+10        perf-stat.i.branch-instructions
      1.30            -0.1        1.16        perf-stat.i.branch-miss-rate%
  1.26e+08            -9.7%  1.138e+08        perf-stat.i.branch-misses
     13.62            +0.2       13.86        perf-stat.i.cache-miss-rate%
  55442235 ±  2%      -6.1%   52078517        perf-stat.i.cache-misses
 4.077e+08 ±  2%      -7.6%  3.766e+08        perf-stat.i.cache-references
      2747            -0.3%       2739        perf-stat.i.context-switches
     10.85            -1.4%      10.70        perf-stat.i.cpi
    288378            +0.1%     288596        perf-stat.i.cpu-clock
 4.467e+11            -0.0%  4.465e+11        perf-stat.i.cpu-cycles
    267.78            +0.2%     268.24        perf-stat.i.cpu-migrations
      8033 ±  2%      +6.4%       8547        perf-stat.i.cycles-between-cache-misses
      0.18            -0.0        0.16        perf-stat.i.iTLB-load-miss-rate%
  68968473           -11.4%   61127131        perf-stat.i.iTLB-load-misses
 4.114e+10            +1.4%  4.172e+10        perf-stat.i.iTLB-loads
 4.109e+10            +1.4%  4.167e+10        perf-stat.i.instructions
    598.48           +14.8%     687.20        perf-stat.i.instructions-per-iTLB-miss
      0.09            +1.4%       0.09        perf-stat.i.ipc
      1.55            -0.1%       1.55        perf-stat.i.metric.GHz
      1.35           -15.1%       1.15        perf-stat.i.metric.K/sec
    178.94            +1.3%     181.27        perf-stat.i.metric.M/sec
    195779           -14.8%     166863        perf-stat.i.minor-faults
    195779           -14.8%     166863        perf-stat.i.page-faults
    288378            +0.1%     288596        perf-stat.i.task-clock
      9.92            -8.9%       9.04        perf-stat.overall.MPKI
      1.25            -0.1        1.11        perf-stat.overall.branch-miss-rate%
     13.66            +0.2       13.89        perf-stat.overall.cache-miss-rate%
     10.87            -1.5%      10.71        perf-stat.overall.cpi
      8026 ±  2%      +6.3%       8534        perf-stat.overall.cycles-between-cache-misses
      0.17            -0.0        0.15        perf-stat.overall.iTLB-load-miss-rate%
    596.26           +14.2%     681.07        perf-stat.overall.instructions-per-iTLB-miss
      0.09            +1.5%       0.09        perf-stat.overall.ipc
  65896092           +19.8%   78932072        perf-stat.overall.path-length
 1.002e+10            +1.6%  1.018e+10        perf-stat.ps.branch-instructions
 1.254e+08            -9.5%  1.134e+08        perf-stat.ps.branch-misses
  55492415 ±  2%      -6.1%   52128690        perf-stat.ps.cache-misses
 4.062e+08 ±  2%      -7.6%  3.754e+08        perf-stat.ps.cache-references
      2689            -0.4%       2677        perf-stat.ps.context-switches
    286795            +0.0%     286862        perf-stat.ps.cpu-clock
 4.452e+11            -0.1%  4.449e+11        perf-stat.ps.cpu-cycles
    253.81            +0.2%     254.32        perf-stat.ps.cpu-migrations
  68711344           -11.3%   60977219        perf-stat.ps.iTLB-load-misses
 4.098e+10            +1.4%  4.156e+10        perf-stat.ps.iTLB-loads
 4.096e+10            +1.4%  4.153e+10        perf-stat.ps.instructions
    194243           -14.6%     165836        perf-stat.ps.minor-faults
    194243           -14.6%     165836        perf-stat.ps.page-faults
    286795            +0.0%     286862        perf-stat.ps.task-clock
 1.268e+13            +1.7%  1.289e+13        perf-stat.total.instructions
      0.00          -100.0%       0.00        proc-vmstat.compact_isolated
    153775            +0.1%     153982        proc-vmstat.nr_active_anon
     34.00 ±  7%      -5.9%      32.00 ±  9%  proc-vmstat.nr_active_file
    111205            -0.4%     110762        proc-vmstat.nr_anon_pages
     61.00 ± 31%     +14.8%      70.00 ±  5%  proc-vmstat.nr_anon_transparent_hugepages
     58.67            -1.1%      58.00        proc-vmstat.nr_dirtied
      5.00            +0.0%       5.00        proc-vmstat.nr_dirty
   1963650            +0.0%    1963749        proc-vmstat.nr_dirty_background_threshold
   3932102            +0.0%    3932300        proc-vmstat.nr_dirty_threshold
    360190            +0.0%     360264        proc-vmstat.nr_file_pages
     49937            +0.0%      49937        proc-vmstat.nr_free_cma
  19794023            +0.0%   19795020        proc-vmstat.nr_free_pages
      5663            -0.0%       5661        proc-vmstat.nr_inactive_anon
     98.00 ±  3%      +0.0%      98.00 ±  7%  proc-vmstat.nr_inactive_file
     13.33 ± 60%     +61.2%      21.50 ±  2%  proc-vmstat.nr_isolated_anon
     40539            -0.0%      40522        proc-vmstat.nr_kernel_stack
     12404            -0.5%      12343        proc-vmstat.nr_mapped
    430.00           -49.9%     215.50 ± 99%  proc-vmstat.nr_mlock
     15352            -0.0%      15347        proc-vmstat.nr_page_table_pages
     48318            +1.3%      48928        proc-vmstat.nr_shmem
     33638            -0.6%      33432        proc-vmstat.nr_slab_reclaimable
     80590            -0.7%      80051        proc-vmstat.nr_slab_unreclaimable
    311806            -0.2%     311237        proc-vmstat.nr_unevictable
      0.00          -100.0%       0.00        proc-vmstat.nr_unstable
      0.00          -100.0%       0.00        proc-vmstat.nr_writeback
     57.67            -1.2%      57.00        proc-vmstat.nr_written
    153775            +0.1%     153982        proc-vmstat.nr_zone_active_anon
     34.00 ±  7%      -5.9%      32.00 ±  9%  proc-vmstat.nr_zone_active_file
      5663            -0.0%       5661        proc-vmstat.nr_zone_inactive_anon
     98.00 ±  3%      +0.0%      98.00 ±  7%  proc-vmstat.nr_zone_inactive_file
    311806            -0.2%     311237        proc-vmstat.nr_zone_unevictable
      5.00            +0.0%       5.00        proc-vmstat.nr_zone_write_pending
      2788 ±  8%      -1.2%       2755 ± 11%  proc-vmstat.numa_hint_faults
      2788 ±  8%      -1.2%       2755 ± 11%  proc-vmstat.numa_hint_faults_local
   1.2e+08           -14.5%  1.026e+08        proc-vmstat.numa_hit
    121.00 ± 28%     +59.9%     193.50 ± 20%  proc-vmstat.numa_huge_pte_updates
      0.00          -100.0%       0.00        proc-vmstat.numa_interleave
   1.2e+08           -14.5%  1.026e+08        proc-vmstat.numa_local
      0.00          -100.0%       0.00        proc-vmstat.numa_other
     65275 ± 26%     +56.7%     102311 ± 20%  proc-vmstat.numa_pte_updates
      6292 ±  6%      +0.7%       6335 ±  2%  proc-vmstat.pgactivate
      0.00          -100.0%       0.00        proc-vmstat.pgalloc_dma32
 1.201e+08           -14.5%  1.027e+08        proc-vmstat.pgalloc_normal
  60452926           -14.4%   51751356        proc-vmstat.pgfault
   1.2e+08           -14.5%  1.026e+08        proc-vmstat.pgfree
      0.00          -100.0%       0.00        proc-vmstat.pgpgin
     50.00 ± 52%     +18.0%      59.00 ± 10%  proc-vmstat.thp_collapse_alloc
     32.00            +0.0%      32.00        proc-vmstat.thp_fault_alloc
      0.00          -100.0%       0.00        proc-vmstat.thp_zero_page_alloc
    105.00            -0.5%     104.50        proc-vmstat.unevictable_pgs_culled
    549.00            +0.0%     549.00        proc-vmstat.unevictable_pgs_mlocked
      0.68 ± 70%      -0.7        0.00        pp.bt.tick_sched_timer.__hrtimer_run_queues.hrtimer_interrupt.smp_apic_timer_interrupt.apic_timer_interrupt
      0.56 ±  2%      -0.6        0.00        pp.bt.do_mmap.vm_mmap_pgoff.ksys_mmap_pgoff.do_syscall_64.entry_SYSCALL_64_after_hwframe
      0.76            -0.1        0.65        pp.bt.mmap64
      0.68            -0.1        0.57        pp.bt.entry_SYSCALL_64_after_hwframe.mmap64
      0.64            -0.1        0.54        pp.bt.vm_mmap_pgoff.ksys_mmap_pgoff.do_syscall_64.entry_SYSCALL_64_after_hwframe.mmap64
      0.65            -0.1        0.55        pp.bt.ksys_mmap_pgoff.do_syscall_64.entry_SYSCALL_64_after_hwframe.mmap64
      0.67            -0.1        0.57        pp.bt.do_syscall_64.entry_SYSCALL_64_after_hwframe.mmap64
      0.82            -0.1        0.74 ±  2%  pp.bt.handle_mm_fault.do_page_fault.page_fault
      0.78            -0.1        0.70        pp.bt.__handle_mm_fault.handle_mm_fault.do_page_fault.page_fault
      0.70            -0.1        0.62        pp.bt.handle_pte_fault.__handle_mm_fault.handle_mm_fault.do_page_fault.page_fault
      1.03            -0.1        0.95        pp.bt.page_fault
      0.99            -0.1        0.92 ±  2%  pp.bt.do_page_fault.page_fault
      0.92            -0.1        0.86        pp.bt.unmap_vmas.unmap_region.__do_munmap.__vm_munmap.__x64_sys_munmap
      0.85            -0.1        0.80        pp.bt.unmap_page_range.unmap_vmas.unmap_region.__do_munmap.__vm_munmap
      1.42 ±  4%      -0.0        1.37        pp.bt.__hrtimer_run_queues.hrtimer_interrupt.smp_apic_timer_interrupt.apic_timer_interrupt._raw_spin_unlock_irqrestore
      0.99 ±  6%      -0.0        0.95        pp.bt._raw_spin_unlock_irqrestore.release_pages.tlb_flush_mmu.tlb_finish_mmu.unmap_region
      0.98 ±  5%      -0.0        0.94        pp.bt.apic_timer_interrupt._raw_spin_unlock_irqrestore.release_pages.tlb_flush_mmu.tlb_finish_mmu
      0.94 ±  6%      -0.0        0.91        pp.bt.smp_apic_timer_interrupt.apic_timer_interrupt._raw_spin_unlock_irqrestore.release_pages.tlb_flush_mmu
      0.82 ±  5%      -0.0        0.79        pp.bt.hrtimer_interrupt.smp_apic_timer_interrupt.apic_timer_interrupt._raw_spin_unlock_irqrestore.release_pages
      0.82 ±  5%      -0.0        0.81        pp.bt.hrtimer_interrupt.smp_apic_timer_interrupt.apic_timer_interrupt._raw_spin_unlock_irqrestore.pagevec_lru_move_fn
      0.95 ±  5%      -0.0        0.94        pp.bt.smp_apic_timer_interrupt.apic_timer_interrupt._raw_spin_unlock_irqrestore.pagevec_lru_move_fn.lru_add_drain_cpu
      0.98 ±  5%      -0.0        0.97        pp.bt.apic_timer_interrupt._raw_spin_unlock_irqrestore.pagevec_lru_move_fn.lru_add_drain_cpu.lru_add_drain
      0.98 ±  5%      -0.0        0.97        pp.bt._raw_spin_unlock_irqrestore.pagevec_lru_move_fn.lru_add_drain_cpu.lru_add_drain.unmap_region
     47.85            +0.1       47.95        pp.bt.tlb_finish_mmu.unmap_region.__do_munmap.__vm_munmap.__x64_sys_munmap
     47.84            +0.1       47.94        pp.bt.tlb_flush_mmu.tlb_finish_mmu.unmap_region.__do_munmap.__vm_munmap
     47.71            +0.1       47.83        pp.bt.release_pages.tlb_flush_mmu.tlb_finish_mmu.unmap_region.__do_munmap
     97.48            +0.2       97.64        pp.bt.munmap
     97.35            +0.2       97.53        pp.bt.entry_SYSCALL_64_after_hwframe.munmap
     97.34            +0.2       97.52        pp.bt.do_syscall_64.entry_SYSCALL_64_after_hwframe.munmap
     46.37            +0.2       46.55        pp.bt._raw_spin_lock_irqsave.release_pages.tlb_flush_mmu.tlb_finish_mmu.unmap_region
     46.34            +0.2       46.52        pp.bt.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.release_pages.tlb_flush_mmu.tlb_finish_mmu
     96.76            +0.2       96.97        pp.bt.__do_munmap.__vm_munmap.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe
     96.81            +0.2       97.03        pp.bt.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe.munmap
     96.80            +0.2       97.02        pp.bt.__vm_munmap.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe.munmap
     47.47            +0.2       47.71        pp.bt.lru_add_drain.unmap_region.__do_munmap.__vm_munmap.__x64_sys_munmap
     47.46            +0.2       47.70        pp.bt.lru_add_drain_cpu.lru_add_drain.unmap_region.__do_munmap.__vm_munmap
     47.44            +0.2       47.68        pp.bt.pagevec_lru_move_fn.lru_add_drain_cpu.lru_add_drain.unmap_region.__do_munmap
     96.55            +0.2       96.80        pp.bt.unmap_region.__do_munmap.__vm_munmap.__x64_sys_munmap.do_syscall_64
     46.22            +0.3       46.48        pp.bt._raw_spin_lock_irqsave.pagevec_lru_move_fn.lru_add_drain_cpu.lru_add_drain.unmap_region
     46.19            +0.3       46.47        pp.bt.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.pagevec_lru_move_fn.lru_add_drain_cpu.lru_add_drain
      0.76            -0.1        0.65        pp.child.mmap64
      0.66            -0.1        0.56        pp.child.vm_mmap_pgoff
      0.67            -0.1        0.57        pp.child.ksys_mmap_pgoff
      0.58 ±  2%      -0.1        0.49        pp.child.do_mmap
      0.11 ± 37%      -0.1        0.03 ±100%  pp.child.timerqueue_del
      2.02 ±  4%      -0.1        1.94        pp.child.smp_apic_timer_interrupt
      2.11 ±  4%      -0.1        2.03        pp.child.apic_timer_interrupt
      1.51 ±  4%      -0.1        1.44        pp.child.__hrtimer_run_queues
      0.79            -0.1        0.71        pp.child.__handle_mm_fault
      0.84            -0.1        0.77        pp.child.handle_mm_fault
      1.07            -0.1        0.99        pp.child.page_fault
      1.75 ±  4%      -0.1        1.68        pp.child.hrtimer_interrupt
      0.71            -0.1        0.64        pp.child.handle_pte_fault
      0.44 ±  2%      -0.1        0.36        pp.child.mmap_region
      0.07 ± 70%      -0.1        0.00        pp.child.rb_next
      1.02            -0.1        0.95        pp.child.do_page_fault
      0.06            -0.1        0.00        pp.child.free_unref_page_commit
      0.93            -0.1        0.87        pp.child.unmap_vmas
      2.06 ±  6%      -0.1        2.00        pp.child._raw_spin_unlock_irqrestore
      0.05            -0.1        0.00        pp.child.__might_sleep
      0.05            -0.1        0.00        pp.child.find_vma
      0.51            -0.0        0.46        pp.child.exit_to_usermode_loop
      0.27            -0.0        0.22        pp.child.get_page_from_freelist
      0.32            -0.0        0.27        pp.child.__alloc_pages_nodemask
      0.87            -0.0        0.83        pp.child.unmap_page_range
      0.39 ± 29%      -0.0        0.35 ± 34%  pp.child.cmd_record
      0.39 ± 29%      -0.0        0.35 ± 34%  pp.child.perf_mmap__push
      0.36 ± 27%      -0.0        0.32 ± 34%  pp.child.ksys_write
      0.50            -0.0        0.46        pp.child.task_work_run
      0.50            -0.0        0.46        pp.child.task_numa_work
      0.18 ±  4%      -0.0        0.14        pp.child.perf_event_mmap
      0.39 ± 29%      -0.0        0.35 ± 35%  pp.child.__libc_start_main
      0.39 ± 29%      -0.0        0.35 ± 35%  pp.child.main
      0.38 ± 28%      -0.0        0.35 ± 33%  pp.child.__GI___libc_write
      0.17 ±  2%      -0.0        0.14 ±  3%  pp.child.prep_new_page
      0.35 ± 27%      -0.0        0.31 ± 35%  pp.child.vfs_write
      0.12 ±  8%      -0.0        0.08        pp.child.perf_iterate_sb
      0.50            -0.0        0.46        pp.child.change_protection
      0.50            -0.0        0.46        pp.child.change_prot_numa
      0.50            -0.0        0.46        pp.child.change_p4d_range
      0.25 ±  3%      -0.0        0.21 ±  2%  pp.child.__pte_alloc
      0.03 ± 70%      -0.0        0.00        pp.child.mem_cgroup_try_charge_delay
      0.03 ± 70%      -0.0        0.00        pp.child.__put_anon_vma
      0.15 ±  3%      -0.0        0.12        pp.child.clear_page_erms
      0.23 ±  2%      -0.0        0.20 ±  2%  pp.child.pte_alloc_one
      0.32 ± 28%      -0.0        0.29 ± 34%  pp.child.generic_file_write_iter
      0.31 ± 29%      -0.0        0.28 ± 35%  pp.child.__generic_file_write_iter
      0.30 ± 28%      -0.0        0.28 ± 34%  pp.child.generic_perform_write
      0.32 ± 28%      -0.0        0.30 ± 35%  pp.child.new_sync_write
      0.11 ±  4%      -0.0        0.09        pp.child.free_unref_page_list
      0.99 ±  4%      -0.0        0.97        pp.child.update_process_times
      1.06 ±  4%      -0.0        1.04        pp.child.tick_sched_timer
      0.16            -0.0        0.14        pp.child.alloc_pages_vma
      0.12            -0.0        0.10        pp.child.get_unmapped_area
      1.01 ±  4%      -0.0        0.99        pp.child.tick_sched_handle
      0.54 ±  3%      -0.0        0.53        pp.child.task_tick_fair
      0.78 ±  5%      -0.0        0.76        pp.child.scheduler_tick
      0.02 ±141%      -0.0        0.00        pp.child.iov_iter_fault_in_readable
      0.02 ±141%      -0.0        0.00        pp.child.enqueue_hrtimer
      0.32            -0.0        0.30        pp.child.___might_sleep
      0.17 ±  2%      -0.0        0.15        pp.child._cond_resched
      0.07 ±  7%      -0.0        0.05        pp.child.kmem_cache_free
      0.16            -0.0        0.15 ±  3%  pp.child.irq_exit
      0.13 ±  3%      -0.0        0.12        pp.child.free_pgtables
      0.12 ±  3%      -0.0        0.11        pp.child.unlink_anon_vmas
      0.11 ± 11%      -0.0        0.10        pp.child.perf_mux_hrtimer_handler
      0.08 ±  5%      -0.0        0.07        pp.child._raw_spin_lock
      0.10 ±  4%      -0.0        0.08 ±  5%  pp.child.arch_get_unmapped_area_topdown
      0.10            -0.0        0.09        pp.child.__update_load_avg_cfs_rq
      0.22 ± 28%      -0.0        0.21 ± 38%  pp.child.shmem_write_begin
      0.22 ± 28%      -0.0        0.21 ± 38%  pp.child.shmem_getpage_gfp
      0.16 ±  5%      -0.0        0.15        pp.child.update_curr
      0.13            -0.0        0.12        pp.child.__anon_vma_prepare
      0.13            -0.0        0.12        pp.child.free_pgd_range
      0.09 ±  9%      -0.0        0.08        pp.child.mem_cgroup_uncharge_list
      0.07            -0.0        0.06        pp.child.vm_unmapped_area
      0.07            -0.0        0.06        pp.child.percpu_counter_add_batch
      0.12            -0.0        0.11        pp.child.free_p4d_range
      0.09 ±  5%      -0.0        0.08        pp.child.kmem_cache_alloc
      0.06 ±  8%      -0.0        0.05        pp.child.rcu_sched_clock_irq
      0.06 ±  8%      -0.0        0.05        pp.child.remove_vma
      0.07            -0.0        0.07 ±  7%  pp.child.rcu_all_qs
      0.06            -0.0        0.06 ±  9%  pp.child.run_timer_softirq
      0.06            -0.0        0.06 ±  9%  pp.child.malloc
      0.07 ±  6%      -0.0        0.07        pp.child.flush_tlb_mm_range
      0.05 ±  8%      -0.0        0.05        pp.child.entry_SYSCALL_64
      0.05 ±  8%      -0.0        0.05        pp.child.vma_link
      0.06 ±  8%      -0.0        0.06 ±  9%  pp.child.clockevents_program_event
      0.05            -0.0        0.05        pp.child.vm_normal_page
      0.06            +0.0        0.06        pp.child.syscall_return_via_sysret
      0.06            +0.0        0.06        pp.child.uncharge_batch
      0.11 ±  4%      +0.0        0.11 ±  4%  pp.child.__softirqentry_text_start
      0.09 ±  5%      +0.0        0.10 ±  5%  pp.child.__update_load_avg_se
      0.16 ± 26%      +0.0        0.16 ± 27%  pp.child.__lru_cache_add
      0.11 ±  4%      +0.0        0.12        pp.child.__pagevec_lru_add_fn
      0.02 ±141%      +0.0        0.03 ±100%  pp.child.interrupt_entry
      0.07 ± 18%      +0.0        0.08        pp.child.update_rq_clock
      0.11 ±  4%      +0.0        0.12 ±  4%  pp.child.__perf_sw_event
      0.09 ±  5%      +0.0        0.11 ±  4%  pp.child.___perf_sw_event
      0.04 ± 70%      +0.0        0.06        pp.child.perf_event_task_tick
      0.13 ± 31%      +0.0        0.15 ±  3%  pp.child.__remove_hrtimer
      0.07            +0.0        0.11 ±  4%  pp.child.__mod_lruvec_state
      0.00            +0.1        0.05        pp.child.irq_enter
      0.00            +0.1        0.05 ±100%  pp.child.isolate_lru_page
     98.48            +0.1       98.53        pp.child.do_syscall_64
      0.00            +0.1        0.06 ±  9%  pp.child.mmput
      0.00            +0.1        0.06 ±  9%  pp.child.exit_mmap
     98.50            +0.1       98.56        pp.child.entry_SYSCALL_64_after_hwframe
      0.02 ±141%      +0.1        0.08 ±  6%  pp.child.__mod_memcg_state
      0.00            +0.1        0.06 ±100%  pp.child.khugepaged
      0.00            +0.1        0.06 ±100%  pp.child._raw_spin_lock_irq
      0.00            +0.1        0.07 ±100%  pp.child.ret_from_fork
      0.00            +0.1        0.07 ±100%  pp.child.kthread
     47.88            +0.1       47.98        pp.child.tlb_finish_mmu
     47.87            +0.1       47.98        pp.child.tlb_flush_mmu
     47.79            +0.1       47.90        pp.child.release_pages
     97.50            +0.2       97.66        pp.child.munmap
     96.82            +0.2       97.03        pp.child.__x64_sys_munmap
     96.81            +0.2       97.03        pp.child.__vm_munmap
     96.79            +0.2       97.01        pp.child.__do_munmap
     47.66            +0.2       47.91        pp.child.pagevec_lru_move_fn
     47.52            +0.2       47.77        pp.child.lru_add_drain
     47.51            +0.3       47.76        pp.child.lru_add_drain_cpu
     96.58            +0.3       96.83        pp.child.unmap_region
     92.87            +0.5       93.34        pp.child._raw_spin_lock_irqsave
     92.80            +0.5       93.31        pp.child.native_queued_spin_lock_slowpath
      0.15 ± 28%      -0.1        0.07        pp.self.__hrtimer_run_queues
      0.07 ± 70%      -0.1        0.00        pp.self.rb_next
      0.05            -0.1        0.00        pp.self.__pagevec_lru_add_fn
      0.05            -0.1        0.00        pp.self.run_timer_softirq
      0.05            -0.1        0.00        pp.self.free_unref_page_commit
      0.15 ±  3%      -0.0        0.11        pp.self.clear_page_erms
      0.44            -0.0        0.41        pp.self.change_p4d_range
      0.08 ±  5%      -0.0        0.06 ±  9%  pp.self.perf_iterate_sb
      0.47 ±  2%      -0.0        0.45        pp.self.unmap_page_range
      0.02 ±141%      -0.0        0.00        pp.self.smp_apic_timer_interrupt
      0.30            -0.0        0.29        pp.self.___might_sleep
      0.02 ±141%      -0.0        0.00        pp.self.malloc
      0.02 ±141%      -0.0        0.00        pp.self.entry_SYSCALL_64
      0.02 ±141%      -0.0        0.00        pp.self.__might_sleep
      0.08 ± 10%      -0.0        0.07 ±  7%  pp.self._raw_spin_lock
      0.09 ± 14%      -0.0        0.08 ±  6%  pp.self.hrtimer_interrupt
      0.09 ±  5%      -0.0        0.08 ±  6%  pp.self.release_pages
      0.10 ±  8%      -0.0        0.09        pp.self._raw_spin_unlock_irqrestore
      0.09            -0.0        0.08        pp.self.__update_load_avg_cfs_rq
      0.06            -0.0        0.05        pp.self.do_page_fault
      0.06            -0.0        0.05        pp.self.kmem_cache_free
      0.09 ±  5%      -0.0        0.08 ±  5%  pp.self.free_p4d_range
      0.08 ±  5%      -0.0        0.08 ±  6%  pp.self._cond_resched
      0.07 ±  7%      -0.0        0.06        pp.self.vm_unmapped_area
      0.06 ±  8%      -0.0        0.05        pp.self.kmem_cache_alloc
      0.06            -0.0        0.06 ±  9%  pp.self.rcu_all_qs
      0.08            -0.0        0.08 ±  6%  pp.self.__update_load_avg_se
      0.09 ±  5%      -0.0        0.09        pp.self.update_curr
      0.07 ±  6%      -0.0        0.07        pp.self._raw_spin_lock_irqsave
      0.11 ±  4%      -0.0        0.11        pp.self.task_tick_fair
      0.07 ±  7%      -0.0        0.07 ±  7%  pp.self.get_page_from_freelist
      0.06 ±  8%      -0.0        0.06 ±  9%  pp.self.__handle_mm_fault
      0.05            -0.0        0.05        pp.self.__do_munmap
      0.06            +0.0        0.06        pp.self.syscall_return_via_sysret
      0.02 ±141%      +0.0        0.03 ±100%  pp.self.update_rq_clock
      0.02 ±141%      +0.0        0.03 ±100%  pp.self.interrupt_entry
      0.04 ± 70%      +0.0        0.06 ±  9%  pp.self.perf_event_task_tick
      0.00            +0.0        0.03 ±100%  pp.self.vm_normal_page
      0.05            +0.0        0.08        pp.self.___perf_sw_event
      0.02 ±141%      +0.1        0.08 ±  6%  pp.self.__mod_memcg_state
      0.00            +0.1        0.11 ±  4%  pp.self.__remove_hrtimer
     92.80            +0.5       93.31        pp.self.native_queued_spin_lock_slowpath
    333.33            -0.2%     332.50        softirqs.BLOCK
      5.00            +0.0%       5.00        softirqs.HI
     17005 ± 69%     -64.3%       6074 ±  8%  softirqs.NET_RX
     45.33            +0.4%      45.50 ±  3%  softirqs.NET_TX
   1322815 ±  2%      -1.3%    1305414        softirqs.RCU
    633707 ±  9%      +1.9%     645991 ± 11%  softirqs.SCHED
    293.00            -0.2%     292.50        softirqs.TASKLET
  35621870           +12.5%   40074312        softirqs.TIMER
    344034            -0.3%     343007        interrupts.CAL:Function_call_interrupts
    396.00            -0.1%     395.50        interrupts.IWI:IRQ_work_interrupts
 1.102e+08 ± 13%      -1.1%   1.09e+08        interrupts.LOC:Local_timer_interrupts
    288.00            +0.0%     288.00        interrupts.MCP:Machine_check_polls
   1451499            +1.0%    1465843        interrupts.NMI:Non-maskable_interrupts
   1451499            +1.0%    1465843        interrupts.PMI:Performance_monitoring_interrupts
     24121 ±  2%      +1.9%      24578 ±  7%  interrupts.RES:Rescheduling_interrupts
      1262 ±  2%     +12.5%       1421 ±  7%  interrupts.TLB:TLB_shootdowns

Thanks,
Feng


[-- Attachment #2: perf-profile.old --]
[-- Type: application/x-trash, Size: 145038 bytes --]

[-- Attachment #3: perf-profile.new --]
[-- Type: text/plain, Size: 158508 bytes --]

# ========
# captured on    : Wed Aug 19 14:08:27 2020
# header version : 1
# data offset    : 4984
# data size      : 269262376
# feat offset    : 269267360
# hostname : lkp-knm01
# os release : 5.7.0-rc1-00011-g1de08dccd3834
# perf version : 5.8.rc2.g3e08a95294a4
# arch : x86_64
# nrcpus online : 288
# nrcpus avail : 288
# cpudesc : Intel(R) Xeon Phi(TM) CPU 7295 @ 1.50GHz
# cpuid : GenuineIntel,6,133,0
# total memory : 82305680 kB
# cmdline : /lkp/benchmarks/perf/perf record -q -ag --realtime=1 -m 256 --count=1000003 -e cycles:pp -o /tmp/lkp/perf.data -D 100000 -- /lkp/lkp/src/bin/event/wait post-test --timeout 110 
# event : name = cycles:pp, , id = { 5278, 5279, 5280, 5281, 5282, 5283, 5284, 5285, 5286, 5287, 5288, 5289, 5290, 5291, 5292, 5293, 5294, 5295, 5296, 5297, 5298, 5299, 5300, 5301, 5302, 5303, 5304, 5305, 5306, 5307, 5308, 5309, 5310, 5311, 5312, 5313, 5314, 5315, 5316, 5317, 5318, 5319, 5320, 5321, 5322, 5323, 5324, 5325, 5326, 5327, 5328, 5329, 5330, 5331, 5332, 5333, 5334, 5335, 5336, 5337, 5338, 5339, 5340, 5341, 5342, 5343, 5344, 5345, 5346, 5347, 5348, 5349, 5350, 5351, 5352, 5353, 5354, 5355, 5356, 5357, 5358, 5359, 5360, 5361, 5362, 5363, 5364, 5365, 5366, 5367, 5368, 5369, 5370, 5371, 5372, 5373, 5374, 5375, 5376, 5377, 5378, 5379, 5380, 5381, 5382, 5383, 5384, 5385, 5386, 5387, 5388, 5389, 5390, 5391, 5392, 5393, 5394, 5395, 5396, 5397, 5398, 5399, 5400, 5401, 5402, 5403, 5404, 5405, 5406, 5407, 5408, 5409, 5410, 5411, 5412, 5413, 5414, 5415, 5416, 5417, 5418, 5419, 5420, 5421, 5422, 5423, 5424, 5425, 5426, 5427, 5428, 5429, 5430, 5431, 5432, 5433, 5434, 5435, 5436, 5437, 5438, 5439, 5440, 5441, 5442, 5443, 5444, 5445, 5446, 5447, 5448, 5449, 5450, 5451, 5452, 5453, 5454, 5455, 5456, 5457, 5458, 5459, 5460, 5461, 5462, 5463, 5464, 5465, 5466, 5467, 5468, 5469, 5470, 5471, 5472, 5473, 5474, 5475, 5476, 5477, 5478, 5479, 5480, 5481, 5482, 5483, 5484, 5485, 5486, 5487, 5488, 5489, 5490, 5491, 5492, 5493, 5494, 5495, 5496, 5497, 5498, 5499, 5500, 5501, 5502, 5503, 5504, 5505, 5506, 5507, 5508, 5509, 5510, 5511, 5512, 5513, 5514, 5515, 5516, 5517, 5518, 5519, 5520, 5521, 5522, 5523, 5524, 5525, 5526, 5527, 5528, 5529, 5530, 5531, 5532, 5533, 5534, 5535, 5536, 5537, 5538, 5539, 5540, 5541, 5542, 5543, 5544, 5545, 5546, 5547, 5548, 5549, 5550, 5551, 5552, 5553, 5554, 5555, 5556, 5557, 5558, 5559, 5560, 5561, 5562, 5563, 5564, 5565 }, size = 120, { sample_period, sample_freq } = 1000003, sample_type = IP|TID|TIME|CALLCHAIN|ID|CPU, read_format = ID, disabled = 1, inherit = 1, precise_ip = 2, sample_id_all = 1, exclude_guest = 1
# event : name = dummy:HG, , id = { 5566, 5567, 5568, 5569, 5570, 5571, 5572, 5573, 5574, 5575, 5576, 5577, 5578, 5579, 5580, 5581, 5582, 5583, 5584, 5585, 5586, 5587, 5588, 5589, 5590, 5591, 5592, 5593, 5594, 5595, 5596, 5597, 5598, 5599, 5600, 5601, 5602, 5603, 5604, 5605, 5606, 5607, 5608, 5609, 5610, 5611, 5612, 5613, 5614, 5615, 5616, 5617, 5618, 5619, 5620, 5621, 5622, 5623, 5624, 5625, 5626, 5627, 5628, 5629, 5630, 5631, 5632, 5633, 5634, 5635, 5636, 5637, 5638, 5639, 5640, 5641, 5642, 5643, 5644, 5645, 5646, 5647, 5648, 5649, 5650, 5651, 5652, 5653, 5654, 5655, 5656, 5657, 5658, 5659, 5660, 5661, 5662, 5663, 5664, 5665, 5666, 5667, 5668, 5669, 5670, 5671, 5672, 5673, 5674, 5675, 5676, 5677, 5678, 5679, 5680, 5681, 5682, 5683, 5684, 5685, 5686, 5687, 5688, 5689, 5690, 5691, 5692, 5693, 5694, 5695, 5696, 5697, 5698, 5699, 5700, 5701, 5702, 5703, 5704, 5705, 5706, 5707, 5708, 5709, 5710, 5711, 5712, 5713, 5714, 5715, 5716, 5717, 5718, 5719, 5720, 5721, 5722, 5723, 5724, 5725, 5726, 5727, 5728, 5729, 5730, 5731, 5732, 5733, 5734, 5735, 5736, 5737, 5738, 5739, 5740, 5741, 5742, 5743, 5744, 5745, 5746, 5747, 5748, 5749, 5750, 5751, 5752, 5753, 5754, 5755, 5756, 5757, 5758, 5759, 5760, 5761, 5762, 5763, 5764, 5765, 5766, 5767, 5768, 5769, 5770, 5771, 5772, 5773, 5774, 5775, 5776, 5777, 5778, 5779, 5780, 5781, 5782, 5783, 5784, 5785, 5786, 5787, 5788, 5789, 5790, 5791, 5792, 5793, 5794, 5795, 5796, 5797, 5798, 5799, 5800, 5801, 5802, 5803, 5804, 5805, 5806, 5807, 5808, 5809, 5810, 5811, 5812, 5813, 5814, 5815, 5816, 5817, 5818, 5819, 5820, 5821, 5822, 5823, 5824, 5825, 5826, 5827, 5828, 5829, 5830, 5831, 5832, 5833, 5834, 5835, 5836, 5837, 5838, 5839, 5840, 5841, 5842, 5843, 5844, 5845, 5846, 5847, 5848, 5849, 5850, 5851, 5852, 5853 }, type = 1, size = 120, config = 0x9, { sample_period, sample_freq } = 1000003, sample_type = IP|TID|TIME|CALLCHAIN|ID|CPU, read_format = ID, disabled = 1, inherit = 1, mmap = 1, comm = 1, enable_on_exec = 1, task = 1, sample_id_all = 1, mmap2 = 1, comm_exec = 1, ksymbol = 1, bpf_event = 1
# CPU_TOPOLOGY info available, use -I to display
# NUMA_TOPOLOGY info available, use -I to display
# pmu mappings: uncore_cha_34 = 71, uncore_edc_uclk_5 = 24, uncore_cha_1 = 38, uncore_cha_24 = 61, software = 1, uncore_cha_14 = 51, uncore_imc_5 = 15, uncore_edc_eclk_0 = 27, uncore_cha_32 = 69, uncore_edc_uclk_3 = 22, uncore_cha_22 = 59, uncore_cha_12 = 49, uncore_imc_uclk_1 = 17, uncore_imc_3 = 13, uncore_cha_8 = 45, uncore_cha_30 = 67, uncore_edc_uclk_1 = 20, uncore_cha_20 = 57, uncore_cha_10 = 47, uncore_edc_eclk_7 = 34, uncore_imc_1 = 11, power = 9, uncore_cha_6 = 43, uncore_cha_29 = 66, uncore_cha_19 = 56, uprobe = 7, uncore_edc_eclk_5 = 32, uncore_cha_37 = 74, cpu = 4, uncore_cha_4 = 41, uncore_cha_27 = 64, uncore_cha_17 = 54, cstate_core = 76, uncore_edc_eclk_3 = 30, uncore_cha_35 = 72, breakpoint = 5, uncore_edc_uclk_6 = 25, uncore_cha_2 = 39, uncore_cha_25 = 62, uncore_cha_15 = 52, uncore_edc_eclk_1 = 28, uncore_cha_33 = 70, tracepoint = 2, uncore_edc_uclk_4 = 23, uncore_cha_0 = 37, uncore_cha_23 = 60, uncore_cha_13 = 50, cstate_pkg = 77, uncore_imc_4 = 14, uncore_cha_9 = 46, uncore_cha_31 = 68, uncore_ubox = 36, uncore_edc_uclk_2 = 21, uncore_cha_21 = 58, uncore_cha_11 = 48, uncore_imc_uclk_0 = 16, uncore_imc_2 = 12, kprobe = 6, uncore_cha_7 = 44, uncore_edc_uclk_0 = 19, uncore_edc_eclk_6 = 33, uncore_m2pcie = 18, uncore_imc_0 = 10, uncore_cha_5 = 42, uncore_pcu = 75, uncore_cha_28 = 65, uncore_cha_18 = 55, msr = 8, uncore_edc_eclk_4 = 31, uncore_cha_36 = 73, uncore_edc_uclk_7 = 26, uncore_irp = 35, uncore_cha_3 = 40, uncore_cha_26 = 63, uncore_cha_16 = 53, uncore_edc_eclk_2 = 29
# CACHE info available, use -I to display
# time of first sample : 162.017687
# time of last sample : 172.174592
# sample duration :  10156.905 ms
# MEM_TOPOLOGY info available, use -I to display
# cpu pmu capabilities: branches=8, max_precise=2, pmu_name=knights-landing
# missing features: TRACING_DATA BRANCH_STACK GROUP_DESC AUXTRACE STAT CLOCKID DIR_FORMAT COMPRESSED 
# ========
#
#
# Total Lost Samples: 72
#
# Samples: 1M of event 'cycles:pp'
# Event count (approx.): 1460004380000
#
# Children      Self  Shared Object             Symbol                                            IPC   [IPC Coverage]
# ........  ........  ........................  ................................................  ....................
#
    98.62%     0.02%  [kernel.kallsyms]         [k] entry_SYSCALL_64_after_hwframe                -      -            
97.48% entry_SYSCALL_64_after_hwframe;munmap
0.57% entry_SYSCALL_64_after_hwframe;mmap64
    98.60%     0.03%  [kernel.kallsyms]         [k] do_syscall_64                                 -      -            
97.47% do_syscall_64;entry_SYSCALL_64_after_hwframe;munmap
0.56% do_syscall_64;entry_SYSCALL_64_after_hwframe;mmap64
    97.61%     0.03%  libc-2.24.so              [.] munmap                                        -      -            
97.60% munmap
    96.99%     0.01%  [kernel.kallsyms]         [k] __x64_sys_munmap                              -      -            
96.98% __x64_sys_munmap;do_syscall_64;entry_SYSCALL_64_after_hwframe;munmap
    96.98%     0.01%  [kernel.kallsyms]         [k] __vm_munmap                                   -      -            
96.97% __vm_munmap;__x64_sys_munmap;do_syscall_64;entry_SYSCALL_64_after_hwframe;munmap
    96.96%     0.05%  [kernel.kallsyms]         [k] __do_munmap                                   -      -            
96.93% __do_munmap;__vm_munmap;__x64_sys_munmap;do_syscall_64;entry_SYSCALL_64_after_hwframe;munmap
    96.78%     0.03%  [kernel.kallsyms]         [k] unmap_region                                  -      -            
96.75% unmap_region;__do_munmap;__vm_munmap;__x64_sys_munmap;do_syscall_64;entry_SYSCALL_64_after_hwframe;munmap
    93.33%     0.07%  [kernel.kallsyms]         [k] _raw_spin_lock_irqsave                        -      -            
46.50% _raw_spin_lock_irqsave;release_pages;tlb_flush_mmu;tlb_finish_mmu;unmap_region;__do_munmap;__vm_munmap;__x64_sys_munmap;do_syscall_64;entry_SYSCALL_64_after_hwframe;munmap
46.47% _raw_spin_lock_irqsave;pagevec_lru_move_fn;lru_add_drain_cpu;lru_add_drain;unmap_region;__do_munmap;__vm_munmap;__x64_sys_munmap;do_syscall_64;entry_SYSCALL_64_after_hwframe;munmap
    93.26%    93.26%  [kernel.kallsyms]         [k] native_queued_spin_lock_slowpath              -      -            
46.47% native_queued_spin_lock_slowpath;_raw_spin_lock_irqsave;release_pages;tlb_flush_mmu;tlb_finish_mmu;unmap_region;__do_munmap;__vm_munmap;__x64_sys_munmap;do_syscall_64;entry_SYSCALL_64_after_hwframe;munmap
46.45% native_queued_spin_lock_slowpath;_raw_spin_lock_irqsave;pagevec_lru_move_fn;lru_add_drain_cpu;lru_add_drain;unmap_region;__do_munmap;__vm_munmap;__x64_sys_munmap;do_syscall_64;entry_SYSCALL_64_after_hwframe;munmap
    47.96%     0.01%  [kernel.kallsyms]         [k] tlb_finish_mmu                                -      -            
47.92% tlb_finish_mmu;unmap_region;__do_munmap;__vm_munmap;__x64_sys_munmap;do_syscall_64;entry_SYSCALL_64_after_hwframe;munmap
    47.95%     0.02%  [kernel.kallsyms]         [k] pagevec_lru_move_fn                           -      -            
47.66% pagevec_lru_move_fn;lru_add_drain_cpu;lru_add_drain;unmap_region;__do_munmap;__vm_munmap;__x64_sys_munmap;do_syscall_64;entry_SYSCALL_64_after_hwframe;munmap
    47.95%     0.01%  [kernel.kallsyms]         [k] tlb_flush_mmu                                 -      -            
47.91% tlb_flush_mmu;tlb_finish_mmu;unmap_region;__do_munmap;__vm_munmap;__x64_sys_munmap;do_syscall_64;entry_SYSCALL_64_after_hwframe;munmap
    47.87%     0.08%  [kernel.kallsyms]         [k] release_pages                                 -      -            
47.80% release_pages;tlb_flush_mmu;tlb_finish_mmu;unmap_region;__do_munmap;__vm_munmap;__x64_sys_munmap;do_syscall_64;entry_SYSCALL_64_after_hwframe;munmap
    47.76%     0.01%  [kernel.kallsyms]         [k] lru_add_drain                                 -      -            
47.69% lru_add_drain;unmap_region;__do_munmap;__vm_munmap;__x64_sys_munmap;do_syscall_64;entry_SYSCALL_64_after_hwframe;munmap
    47.75%     0.03%  [kernel.kallsyms]         [k] lru_add_drain_cpu                             -      -            
47.69% lru_add_drain_cpu;lru_add_drain;unmap_region;__do_munmap;__vm_munmap;__x64_sys_munmap;do_syscall_64;entry_SYSCALL_64_after_hwframe;munmap
     2.04%     0.01%  [kernel.kallsyms]         [k] apic_timer_interrupt                          -      -            
0.97% apic_timer_interrupt;_raw_spin_unlock_irqrestore;pagevec_lru_move_fn;lru_add_drain_cpu;lru_add_drain;unmap_region;__do_munmap;__vm_munmap;__x64_sys_munmap;do_syscall_64;entry_SYSCALL_64_after_hwframe;munmap
0.95% apic_timer_interrupt;_raw_spin_unlock_irqrestore;release_pages;tlb_flush_mmu;tlb_finish_mmu;unmap_region;__do_munmap;__vm_munmap;__x64_sys_munmap;do_syscall_64;entry_SYSCALL_64_after_hwframe;munmap
     2.01%     0.09%  [kernel.kallsyms]         [k] _raw_spin_unlock_irqrestore                   -      -            
0.97% _raw_spin_unlock_irqrestore;pagevec_lru_move_fn;lru_add_drain_cpu;lru_add_drain;unmap_region;__do_munmap;__vm_munmap;__x64_sys_munmap;do_syscall_64;entry_SYSCALL_64_after_hwframe;munmap
0.96% _raw_spin_unlock_irqrestore;release_pages;tlb_flush_mmu;tlb_finish_mmu;unmap_region;__do_munmap;__vm_munmap;__x64_sys_munmap;do_syscall_64;entry_SYSCALL_64_after_hwframe;munmap
     1.95%     0.04%  [kernel.kallsyms]         [k] smp_apic_timer_interrupt                      -      -            
0.93% smp_apic_timer_interrupt;apic_timer_interrupt;_raw_spin_unlock_irqrestore;pagevec_lru_move_fn;lru_add_drain_cpu;lru_add_drain;unmap_region;__do_munmap;__vm_munmap;__x64_sys_munmap;do_syscall_64;entry_SYSCALL_64_after_hwframe;munmap
0.92% smp_apic_timer_interrupt;apic_timer_interrupt;_raw_spin_unlock_irqrestore;release_pages;tlb_flush_mmu;tlb_finish_mmu;unmap_region;__do_munmap;__vm_munmap;__x64_sys_munmap;do_syscall_64;entry_SYSCALL_64_after_hwframe;munmap
     1.69%     0.07%  [kernel.kallsyms]         [k] hrtimer_interrupt                             -      -            
0.80% hrtimer_interrupt;smp_apic_timer_interrupt;apic_timer_interrupt;_raw_spin_unlock_irqrestore;pagevec_lru_move_fn;lru_add_drain_cpu;lru_add_drain;unmap_region;__do_munmap;__vm_munmap;__x64_sys_munmap;do_syscall_64;entry_SYSCALL_64_after_hwframe;munmap
0.80% hrtimer_interrupt;smp_apic_timer_interrupt;apic_timer_interrupt;_raw_spin_unlock_irqrestore;release_pages;tlb_flush_mmu;tlb_finish_mmu;unmap_region;__do_munmap;__vm_munmap;__x64_sys_munmap;do_syscall_64;entry_SYSCALL_64_after_hwframe;munmap
     1.45%     0.07%  [kernel.kallsyms]         [k] __hrtimer_run_queues                          -      -            
0.69% __hrtimer_run_queues;hrtimer_interrupt;smp_apic_timer_interrupt;apic_timer_interrupt;_raw_spin_unlock_irqrestore;release_pages;tlb_flush_mmu;tlb_finish_mmu;unmap_region;__do_munmap;__vm_munmap;__x64_sys_munmap;do_syscall_64;entry_SYSCALL_64_after_hwframe;munmap
0.69% __hrtimer_run_queues;hrtimer_interrupt;smp_apic_timer_interrupt;apic_timer_interrupt;_raw_spin_unlock_irqrestore;pagevec_lru_move_fn;lru_add_drain_cpu;lru_add_drain;unmap_region;__do_munmap;__vm_munmap;__x64_sys_munmap;do_syscall_64;entry_SYSCALL_64_after_hwframe;munmap
     1.06%     0.01%  [kernel.kallsyms]         [k] tick_sched_timer                              -      -            
     1.01%     0.01%  [kernel.kallsyms]         [k] tick_sched_handle                             -      -            
     0.98%     0.01%  [kernel.kallsyms]         [k] page_fault                                    -      -            
0.94% page_fault
     0.98%     0.01%  [kernel.kallsyms]         [k] update_process_times                          -      -            
     0.94%     0.05%  [kernel.kallsyms]         [k] do_page_fault                                 -      -            
0.90% do_page_fault;page_fault
     0.87%     0.02%  [kernel.kallsyms]         [k] unmap_vmas                                    -      -            
0.86% unmap_vmas;unmap_region;__do_munmap;__vm_munmap;__x64_sys_munmap;do_syscall_64;entry_SYSCALL_64_after_hwframe;munmap
     0.83%     0.45%  [kernel.kallsyms]         [k] unmap_page_range                              -      -            
0.80% unmap_page_range;unmap_vmas;unmap_region;__do_munmap;__vm_munmap;__x64_sys_munmap;do_syscall_64;entry_SYSCALL_64_after_hwframe;munmap
     0.77%     0.03%  [kernel.kallsyms]         [k] scheduler_tick                                -      -            
     0.76%     0.04%  [kernel.kallsyms]         [k] handle_mm_fault                               -      -            
0.73% handle_mm_fault;do_page_fault;page_fault
     0.71%     0.05%  [kernel.kallsyms]         [k] __handle_mm_fault                             -      -            
0.69% __handle_mm_fault;handle_mm_fault;do_page_fault;page_fault
     0.64%     0.02%  libc-2.24.so              [.] mmap64                                        -      -            
0.64% mmap64
     0.63%     0.03%  [kernel.kallsyms]         [k] handle_pte_fault                              -      -            
0.61% handle_pte_fault;__handle_mm_fault;handle_mm_fault;do_page_fault;page_fault
     0.57%     0.01%  [kernel.kallsyms]         [k] ksys_mmap_pgoff                               -      -            
0.54% ksys_mmap_pgoff;do_syscall_64;entry_SYSCALL_64_after_hwframe;mmap64
     0.56%     0.01%  [kernel.kallsyms]         [k] vm_mmap_pgoff                                 -      -            
0.53% vm_mmap_pgoff;ksys_mmap_pgoff;do_syscall_64;entry_SYSCALL_64_after_hwframe;mmap64
     0.53%     0.11%  [kernel.kallsyms]         [k] task_tick_fair                                -      -            
     0.49%     0.02%  [kernel.kallsyms]         [k] do_mmap                                       -      -            
     0.48%     0.00%  libc-2.24.so              [.] __libc_start_main                             -      -            
     0.48%     0.00%  perf                      [.] main                                          -      -            
     0.47%     0.00%  perf                      [.] cmd_record                                    -      -            
     0.47%     0.00%  perf                      [.] perf_mmap__push                               -      -            
     0.46%     0.00%  [kernel.kallsyms]         [k] exit_to_usermode_loop                         -      -            
     0.46%     0.00%  [kernel.kallsyms]         [k] task_work_run                                 -      -            
     0.46%     0.01%  libpthread-2.24.so        [.] __GI___libc_write                             -      -            
     0.46%     0.00%  [kernel.kallsyms]         [k] task_numa_work                                -      -            
     0.46%     0.00%  [kernel.kallsyms]         [k] change_protection                             -      -            
     0.46%     0.00%  [kernel.kallsyms]         [k] change_prot_numa                              -      -            
     0.46%     0.40%  [kernel.kallsyms]         [k] change_p4d_range                              -      -            
     0.43%     0.00%  [kernel.kallsyms]         [k] ksys_write                                    -      -            
     0.42%     0.00%  [kernel.kallsyms]         [k] vfs_write                                     -      -            
     0.40%     0.00%  [kernel.kallsyms]         [k] new_sync_write                                -      -            
     0.39%     0.00%  [kernel.kallsyms]         [k] generic_file_write_iter                       -      -            
     0.38%     0.00%  [kernel.kallsyms]         [k] __generic_file_write_iter                     -      -            
     0.37%     0.00%  [kernel.kallsyms]         [k] generic_perform_write                         -      -            
     0.36%     0.03%  [kernel.kallsyms]         [k] mmap_region                                   -      -            
     0.30%     0.29%  [kernel.kallsyms]         [k] ___might_sleep                                -      -            
     0.29%     0.00%  [kernel.kallsyms]         [k] shmem_write_begin                             -      -            
     0.29%     0.01%  [kernel.kallsyms]         [k] shmem_getpage_gfp                             -      -            
     0.27%     0.03%  [kernel.kallsyms]         [k] __alloc_pages_nodemask                        -      -            
     0.22%     0.06%  [kernel.kallsyms]         [k] get_page_from_freelist                        -      -            
     0.21%     0.01%  [kernel.kallsyms]         [k] __pte_alloc                                   -      -            
     0.21%     0.01%  [kernel.kallsyms]         [k] __lru_cache_add                               -      -            
     0.19%     0.01%  [kernel.kallsyms]         [k] pte_alloc_one                                 -      -            
     0.15%     0.09%  [kernel.kallsyms]         [k] update_curr                                   -      -            
     0.15%     0.07%  [kernel.kallsyms]         [k] _cond_resched                                 -      -            
     0.15%     0.01%  [kernel.kallsyms]         [k] irq_exit                                      -      -            
     0.15%     0.10%  [kernel.kallsyms]         [k] __remove_hrtimer                              -      -            
     0.14%     0.04%  [kernel.kallsyms]         [k] perf_event_mmap                               -      -            
     0.14%     0.01%  [kernel.kallsyms]         [k] alloc_pages_vma                               -      -            
     0.13%     0.02%  [kernel.kallsyms]         [k] prep_new_page                                 -      -            
     0.12%     0.02%  [kernel.kallsyms]         [k] __perf_sw_event                               -      -            
     0.12%     0.04%  [kernel.kallsyms]         [k] __pagevec_lru_add_fn                          -      -            
     0.12%     0.01%  [kernel.kallsyms]         [k] __anon_vma_prepare                            -      -            
     0.12%     0.11%  [kernel.kallsyms]         [k] clear_page_erms                               -      -            
     0.12%     0.00%  [kernel.kallsyms]         [k] free_pgtables                                 -      -            
     0.12%     0.01%  [kernel.kallsyms]         [k] free_pgd_range                                -      -            
     0.12%     0.04%  [kernel.kallsyms]         [k] __softirqentry_text_start                     -      -            
     0.11%     0.03%  [kernel.kallsyms]         [k] unlink_anon_vmas                              -      -            
     0.11%     0.08%  [kernel.kallsyms]         [k] free_p4d_range                                -      -            
     0.11%     0.04%  [kernel.kallsyms]         [k] __mod_lruvec_state                            -      -            
     0.10%     0.08%  [kernel.kallsyms]         [k] ___perf_sw_event                              -      -            
     0.10%     0.03%  [kernel.kallsyms]         [k] perf_mux_hrtimer_handler                      -      -            
     0.10%     0.01%  [kernel.kallsyms]         [k] get_unmapped_area                             -      -            
     0.10%     0.08%  [kernel.kallsyms]         [k] __update_load_avg_se                          -      -            
     0.09%     0.03%  [kernel.kallsyms]         [k] free_unref_page_list                          -      -            
     0.09%     0.08%  [kernel.kallsyms]         [k] __update_load_avg_cfs_rq                      -      -            
     0.09%     0.02%  [kernel.kallsyms]         [k] arch_get_unmapped_area_topdown                -      -            
     0.08%     0.01%  [kernel.kallsyms]         [k] mem_cgroup_uncharge_list                      -      -            
     0.08%     0.04%  [kernel.kallsyms]         [k] update_rq_clock.part.70                       -      -            
     0.08%     0.08%  [kernel.kallsyms]         [k] __mod_memcg_state                             -      -            
     0.08%     0.05%  [kernel.kallsyms]         [k] kmem_cache_alloc                              -      -            
     0.08%     0.05%  [kernel.kallsyms]         [k] perf_iterate_sb                               -      -            
     0.07%     0.06%  [kernel.kallsyms]         [k] rcu_all_qs                                    -      -            
     0.07%     0.02%  [kernel.kallsyms]         [k] flush_tlb_mm_range                            -      -            
     0.07%     0.06%  [kernel.kallsyms]         [k] _raw_spin_lock                                -      -            
     0.06%     0.06%  [kernel.kallsyms]         [k] vm_unmapped_area                              -      -            
     0.06%     0.01%  [kernel.kallsyms]         [k] uncharge_batch                                -      -            
     0.06%     0.06%  [kernel.kallsyms]         [k] perf_event_task_tick                          -      -            
     0.06%     0.00%  [kernel.kallsyms]         [k] mmput                                         -      -            
     0.06%     0.00%  [kernel.kallsyms]         [k] exit_mmap                                     -      -            
     0.06%     0.04%  libc-2.24.so              [.] malloc                                        -      -            
     0.06%     0.06%  [kernel.kallsyms]         [k] syscall_return_via_sysret                     -      -            
     0.06%     0.04%  [kernel.kallsyms]         [k] run_timer_softirq                             -      -            
     0.06%     0.03%  [kernel.kallsyms]         [k] percpu_counter_add_batch                      -      -            
     0.05%     0.04%  [kernel.kallsyms]         [k] rcu_sched_clock_irq                           -      -            
     0.05%     0.05%  [kernel.kallsyms]         [k] vm_normal_page                                -      -            
     0.05%     0.01%  [kernel.kallsyms]         [k] clockevents_program_event                     -      -            
     0.05%     0.04%  [kernel.kallsyms]         [k] entry_SYSCALL_64                              -      -            
     0.05%     0.01%  [kernel.kallsyms]         [k] remove_vma                                    -      -            
     0.05%     0.05%  [kernel.kallsyms]         [k] kmem_cache_free                               -      -            
     0.05%     0.05%  [kernel.kallsyms]         [k] interrupt_entry                               -      -            
     0.05%     0.03%  [kernel.kallsyms]         [k] irq_enter                                     -      -            
     0.05%     0.01%  [kernel.kallsyms]         [k] vma_link                                      -      -            
     0.04%     0.01%  [kernel.kallsyms]         [k] timerqueue_del                                -      -            
     0.04%     0.02%  [kernel.kallsyms]         [k] find_vma                                      -      -            
     0.04%     0.01%  [kernel.kallsyms]         [k] enqueue_hrtimer                               -      -            
     0.04%     0.04%  [kernel.kallsyms]         [k] __might_sleep                                 -      -            
     0.04%     0.01%  [kernel.kallsyms]         [k] iov_iter_fault_in_readable                    -      -            
     0.04%     0.00%  [kernel.kallsyms]         [k] mark_page_accessed                            -      -            
     0.04%     0.03%  [kernel.kallsyms]         [k] free_unref_page_commit                        -      -            
     0.04%     0.03%  [kernel.kallsyms]         [k] ktime_get                                     -      -            
     0.04%     0.03%  [kernel.kallsyms]         [k] error_entry                                   -      -            
     0.04%     0.00%  [kernel.kallsyms]         [k] mem_cgroup_try_charge_delay                   -      -            
     0.04%     0.04%  [kernel.kallsyms]         [k] __hrtimer_next_event_base                     -      -            
     0.04%     0.04%  [kernel.kallsyms]         [k] __mod_node_page_state                         -      -            
     0.04%     0.01%  [kernel.kallsyms]         [k] __put_anon_vma                                -      -            
     0.04%     0.00%  [kernel.kallsyms]         [k] activate_page                                 -      -            
     0.04%     0.00%  [kernel.kallsyms]         [k] __x64_sys_execve                              -      -            
     0.04%     0.00%  [kernel.kallsyms]         [k] __do_execve_file.isra.33                      -      -            
     0.04%     0.00%  libc-2.24.so              [.] execve                                        -      -            
     0.04%     0.00%  [kernel.kallsyms]         [k] sched_clock_cpu                               -      -            
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     0.02%     0.01%  libc-2.24.so              [.] free                                          -      -            
     0.02%     0.02%  [kernel.kallsyms]         [k] tick_program_event                            -      -            
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     0.02%     0.01%  [kernel.kallsyms]         [k] ret_from_intr                                 -      -            
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     0.01%     0.01%  malloc1_processes         [.] malloc@plt                                    -      -            
     0.01%     0.01%  [kernel.kallsyms]         [k] account_process_tick                          -      -            
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     0.01%     0.00%  libc-2.24.so              [.] read                                          -      -            
     0.01%     0.01%  [kernel.kallsyms]         [k] cap_capable                                   -      -            
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     0.01%     0.00%  dash                      [.] forkshell                                     -      -            
     0.01%     0.01%  malloc1_processes         [.] free@plt                                      -      -            
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     0.01%     0.00%  libc-2.24.so              [.] __libc_fork                                   -      -            
     0.01%     0.01%  [kernel.kallsyms]         [k] anon_vma_chain_link                           -      -            
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     0.00%     0.00%  [kernel.kallsyms]         [k] __dec_node_page_state                         -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] printk                                        -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] vprintk_emit                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] find_idlest_group.isra.95                     -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] profile_munmap                                -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] native_set_pmd                                -      -            
     0.00%     0.00%  libc-2.24.so              [.] setlocale                                     -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] cap_mmap_addr                                 -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] account_system_time                           -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] pmd_pfn                                       -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] policy_node                                   -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] call_timer_fn                                 -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] p4d_page_vaddr                                -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] rcu_core                                      -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] hrtimer_run_queues                            -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __fget_files                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] mem_cgroup_from_task                          -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] perf_mmap_fault                               -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __get_vma_policy                              -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] current_time                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] dup_mm                                        -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] run_rebalance_domains                         -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] acct_account_cputime                          -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] cap_mmap_file                                 -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] update_blocked_averages                       -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] fsnotify                                      -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] sched_clock_tick                              -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] filemap_map_pages                             -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] enqueue_entity                                -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __vma_link_list                               -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] get_vma_policy.part.36                        -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] do_wp_page                                    -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __x86_indirect_thunk_r13                      -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] iov_iter_advance                              -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] sysfs_kf_seq_show                             -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] dev_attr_show                                 -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] tlb_table_flush                               -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __x86_indirect_thunk_r12                      -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] do_signal                                     -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] wp_page_copy                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] sum_zone_numa_state                           -      -            
     0.00%     0.00%  libc-2.24.so              [.] write                                         -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __queue_work                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] console_unlock                                -      -            
     0.00%     0.00%  perf                      [.] perf_mmap__read_init                          -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] should_fail_alloc_page                        -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] task_tick_rt                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] new_sync_read                                 -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] show_stat                                     -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] serial8250_console_write                      -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] flush_tlb_batched_pending                     -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] pmd_page_vaddr                                -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] uart_console_write                            -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] find_next_bit                                 -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] memcpy                                        -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] update_load_avg                               -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] wake_up_new_task                              -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] wait_for_xmitr                                -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __vma_link_file                               -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] serial8250_console_putchar                    -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] set_page_dirty                                -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] link_path_walk.part.30                        -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] aa_file_perm                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __raw_spin_unlock                             -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] fsnotify_parent                               -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] sched_exec                                    -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] native_set_pte_at                             -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] walk_component                                -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] arch_vma_name                                 -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] page_add_file_rmap                            -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] secondary_startup_64                          -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] start_secondary                               -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] cpu_startup_entry                             -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] do_idle                                       -      -            
     0.00%     0.00%  libpthread-2.24.so        [.] __pthread_disable_asynccancel                 -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] pipe_read                                     -      -            
     0.00%     0.00%  perf                      [.] perf_mmap__consume                            -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] perf_mmap_to_page                             -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __account_scheduler_latency                   -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] net_rx_action                                 -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] newidle_balance                               -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] io_serial_in                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] xas_start                                     -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] update_rt_rq_load_avg                         -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __x86_indirect_thunk_r15                      -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] igb_poll                                      -      -            
     0.00%     0.00%  perf                      [.] cmd_stat                                      -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] xas_find_conflict                             -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] cpuidle_enter_state                           -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] pipe_write                                    -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] acpi_os_execute_deferred                      -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] acpi_ev_asynch_execute_gpe_method             -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] acpi_ns_evaluate                              -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] acpi_ps_execute_method                        -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] cpuidle_enter                                 -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] xas_store                                     -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] get_signal                                    -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] stack_trace_save_tsk                          -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] do_IRQ                                        -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] acpi_ps_parse_aml                             -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] node_read_numastat                            -      -            
     0.00%     0.00%  perf                      [.] write@plt                                     -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] mutex_unlock                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] balance_dirty_pages_ratelimited               -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] node_read_vmstat                              -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] acpi_ps_parse_loop                            -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] update_curr_rt                                -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] do_mprotect_pkey                              -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] kill_pid_info                                 -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] copy_page_range                               -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] vmstat_update                                 -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __x64_sys_mprotect                            -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __sb_end_write                                -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] ktime_get_coarse_real_ts64                    -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] refresh_cpu_vm_stats                          -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] arch_stack_walk                               -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] apparmor_file_permission                      -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] generic_write_check_limits.isra.52            -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] file_remove_privs                             -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] PageHuge                                      -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] copy_p4d_range                                -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] do_faccessat                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] napi_complete_done                            -      -            
     0.00%     0.00%  libpthread-2.24.so        [.] __GI___libc_read                              -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __wake_up_common_lock                         -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __switch_to                                   -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] timekeeping_advance                           -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] xas_create_range                              -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] mprotect_fixup                                -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] cpumask_next_and                              -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] gro_normal_list.part.133                      -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] netif_receive_skb_list_internal               -      -            
     0.00%     0.00%  libc-2.24.so              [.] kill                                          -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __set_page_dirty_no_writeback                 -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] set_next_entity                               -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] step_into                                     -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __wake_up_common                              -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] filename_lookup                               -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __netif_receive_skb_list_core                 -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] reschedule_interrupt                          -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] scheduler_ipi                                 -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] sched_ttwu_pending                            -      -            
     0.00%     0.00%  libc-2.24.so              [.] __fxstat64                                    -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] rw_verify_area                                -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] vma_migratable                                -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __x86_indirect_thunk_r10                      -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] timestamp_truncate                            -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] note_gp_changes                               -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] it_real_fn                                    -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __send_signal                                 -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] autoremove_wake_function                      -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] ip_list_rcv                                   -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] shmem_pseudo_vma_init                         -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] cpumask_next                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] ip_sublist_rcv                                -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] path_lookupat                                 -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] touch_atime                                   -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] native_iret                                   -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] generic_update_time                           -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] unwind_next_frame                             -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __setup_rt_frame                              -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] vsnprintf                                     -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] alloc_empty_file                              -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] copy_user_highpage.isra.85                    -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] dequeue_task_fair                             -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] do_send_sig_info                              -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] smpboot_thread_fn                             -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] copy_page                                     -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] xas_create                                    -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __fput                                        -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] put_prev_entity                               -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __do_sys_newfstat                             -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] seq_vprintf                                   -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __x64_sys_kill                                -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] proc_reg_read                                 -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] seq_printf                                    -      -            
     0.00%     0.00%  libc-2.24.so              [.] wait4                                         -      -            
     0.00%     0.00%  libc-2.24.so              [.] _IO_file_xsputn                               -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] delay_tsc                                     -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] fput_many                                     -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] rcu_do_batch                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] acpi_ds_exec_end_op                           -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] do_open_execat                                -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] getname_flags                                 -      -            
     0.00%     0.00%  perf                      [.] perf_evsel__read                              -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __f_unlock_pos                                -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] mpol_shared_policy_lookup                     -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] switch_mm_irqs_off                            -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __alloc_file                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __vma_adjust                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] dequeue_entity                                -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] seq_put_decimal_ull_width                     -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] generic_file_mmap                             -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] lookup_fast                                   -      -            
     0.00%     0.00%  gawk                      [.] more_blocks                                   -      -            
     0.00%     0.00%  perf                      [.] evsel__read_counter                           -      -            
     0.00%     0.00%  libc-2.24.so              [.] alarm                                         -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __mnt_want_write_file                         -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] lock_page_memcg                               -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] update_irq_load_avg                           -      -            
     0.00%     0.00%  libc-2.24.so              [.] _IO_fwrite                                    -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] num_to_str                                    -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] unlock_page                                   -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] fpu__clear                                    -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] filp_close                                    -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __x64_sys_alarm                               -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] do_setitimer                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] do_dentry_open                                -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] generic_file_read_iter                        -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] timekeeping_update                            -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __split_vma                                   -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __x64_sys_close                               -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __x64_sys_rt_sigreturn                        -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] restore_sigcontext                            -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] alarm_setitimer                               -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] dput                                          -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] kill_something_info                           -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] schedule_timeout                              -      -            
     0.00%     0.00%  libc-2.24.so              [.] __isoc99_vsscanf                              -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __x64_sys_write                               -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] iov_iter_init                                 -      -            
     0.00%     0.00%  libc-2.24.so              [.] __mbrtowc                                     -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] copy_fpstate_to_sigframe                      -      -            
     0.00%     0.00%  dash                      [.] dowait                                        -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __might_fault                                 -      -            
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     0.00%     0.00%  dmesg                     [.] __ctype_b_loc@plt                             -      -            
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     0.00%     0.00%  grep                      [.] _init                                         -      -            
     0.00%     0.00%  imklog.so                 [.] _init                                         -      -            
     0.00%     0.00%  libc-2.24.so              [.] __sigsetjmp                                   -      -            
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     0.00%     0.00%  libc-2.24.so              [.] bindtextdomain                                -      -            
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     0.00%     0.00%  libc-2.24.so              [.] fread_unlocked                                -      -            
     0.00%     0.00%  libc-2.24.so              [.] getenv                                        -      -            
     0.00%     0.00%  libc-2.24.so              [.] strchrnul                                     -      -            
     0.00%     0.00%  libpthread-2.24.so        [.] _pthread_cleanup_push_defer                   -      -            
     0.00%     0.00%  malloc1_processes         [.] alarm@plt                                     -      -            
     0.00%     0.00%  mpstat                    [.] fgets@plt                                     -      -            
     0.00%     0.00%  perf                      [.] perf_evlist                                   -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __d_drop.part.19                              -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __get_user_pages_remote                       -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __get_user_pages                              -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __kernel_text_address                         -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __lookup_hash                                 -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __next_timer_interrupt                        -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __pud_alloc                                   -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __put_cred                                    -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] cgroup_post_fork                              -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __sched_fork                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __set_cpus_allowed_ptr                        -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __sigqueue_alloc                              -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __slab_alloc                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __sys_socket                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __sock_create                                 -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __x64_sys_chdir                               -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __x64_sys_nanosleep                           -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] __x64_sys_socket                              -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] _extract_crng                                 -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] acct_collect                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] acpi_ds_create_walk_state                     -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] acpi_ds_restart_control_method                -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] acpi_ds_result_push                           -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] acpi_ev_detect_gpe                            -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] acpi_ps_complete_op                           -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] acpi_ps_get_next_arg                          -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] acpi_ut_create_generic_state                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] acpi_ex_get_name_string                       -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] acpi_hw_read                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] acpi_hw_read_port                             -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] alloc_inode                                   -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] apparmor_file_alloc_security                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] arch_cpu_idle_enter                           -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] attach_entity_cfs_rq                          -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] balance_fair                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] bit_cursor                                    -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] cgroup_exit                                   -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] chacha_block_generic                          -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] check_kill_permission                         -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] class_dev_iter_next                           -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] complete_walk                                 -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] copy_page_from_iter                           -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] copy_strings_kernel                           -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] copyout                                       -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] css_set_move_task                             -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] cursor_timer_handler                          -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] d_invalidate                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] d_lookup                                      -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] dcache_dir_close                              -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] disk_seqf_next                                -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] do_nanosleep                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] drm_client_buffer_vmap                        -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] drm_client_buffer_vunmap                      -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] drm_gem_vmap                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] drm_gem_vram_vunmap                           -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] drm_gem_vram_object_vmap                      -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] drm_gem_vram_vmap                             -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] dst_alloc                                     -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] ep_poll                                       -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] exec_mm_release                               -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] fb_flashcursor                                -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] find_extend_vma                               -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] fpstate_init                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] free_fs_struct                                -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] free_pid                                      -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] free_uid                                      -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] free_unref_page                               -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] futex_exec_release                            -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] get_user_arg_ptr.isra.23                      -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] global_dirty_limits                           -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] hrtimer_nanosleep                             -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] in_sched_functions                            -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] init_dl_task_timer                            -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] inode_sb_list_add                             -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] inode_wait_for_writeback                      -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] insert_vm_struct                              -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] insert_vmap_area_augment.constprop.52         -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] install_exec_creds                            -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] ksys_chdir                                    -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] ksys_lseek                                    -      -            
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     0.00%     0.00%  [kernel.kallsyms]         [k] menu_select                                   -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] migrate_task_rq_fair                          -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] mod_timer                                     -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] move_page_tables                              -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] native_set_p4d                                -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] new_inode_pseudo                              -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] next_online_pgdat                             -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] nfs_file_write                                -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] nfs_write_begin                               -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] notifier_call_chain                           -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] nr_running                                    -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] perf_event_pid_type                           -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] pmd_devmap                                    -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] prepare_exec_creds                            -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] proc_alloc_inode                              -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] proc_flush_pid                                -      -            
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     0.00%     0.00%  [kernel.kallsyms]         [k] randomize_page                                -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] rt_dst_alloc                                  -      -            
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     0.00%     0.00%  [kernel.kallsyms]         [k] security_bprm_committing_creds                -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] security_file_mprotect                        -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] set_task_cpu                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] shrink_dcache_parent                          -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] shrink_dentry_list                            -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] sprintf                                       -      -            
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     0.00%     0.00%  [kernel.kallsyms]         [k] swake_up_one                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] swake_up_locked.part.2                        -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] task_change_group_fair                        -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] thread_group_cputime_adjusted                 -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] tick_nohz_get_sleep_length                    -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] unix_create                                   -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] unix_create1                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] unwind_get_return_address                     -      -            
     0.00%     0.00%  dash                      [.] popstackmark                                  -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] uprobe_start_dup_mmap                         -      -            
     0.00%     0.00%  [kernel.kallsyms]         [k] vmstat_show                                   -      -            
     0.00%     0.00%  gawk                      [.] estrdup                                       -      -            
     0.00%     0.00%  gawk                      [.] init_symbol_table                             -      -            
     0.00%     0.00%  gawk                      [.] resetup                                       -      -            
     0.00%     0.00%  libc-2.24.so              [.] _IO_file_read                                 -      -            
     0.00%     0.00%  libc-2.24.so              [.] _IO_file_setbuf                               -      -            
     0.00%     0.00%  libc-2.24.so              [.] __clock_gettime                               -      -            
     0.00%     0.00%  libc-2.24.so              [.] __ctype_b_loc                                 -      -            
     0.00%     0.00%  libc-2.24.so              [.] __getpagesize                                 -      -            
     0.00%     0.00%  libc-2.24.so              [.] __memcpy_chk                                  -      -            
     0.00%     0.00%  libc-2.24.so              [.] __socket                                      -      -            
     0.00%     0.00%  libc-2.24.so              [.] __sysconf                                     -      -            
     0.00%     0.00%  libc-2.24.so              [.] __vsprintf_chk                                -      -            
     0.00%     0.00%  libc-2.24.so              [.] access                                        -      -            
     0.00%     0.00%  libc-2.24.so              [.] lseek64                                       -      -            
     0.00%     0.00%  libc-2.24.so              [.] mkdir                                         -      -            
     0.00%     0.00%  libm-2.24.so              [.] ceilf                                         -      -            
     0.00%     0.00%  libpthread-2.24.so        [.] __nanosleep                                   -      -            
     0.00%     0.00%  libpthread-2.24.so        [.] pthread_cond_signal@@GLIBC_2.3.2              -      -            
     0.00%     0.00%  libsystemd-shared-232.so  [.] sd_event_run                                  -      -            
     0.00%     0.00%  libsystemd-shared-232.so  [.] sd_notifyf                                    -      -            


# Samples: 0  of event 'dummy:HG'
# Event count (approx.): 0
#
# Children      Self  Shared Object  Symbol  IPC   [IPC Coverage]
# ........  ........  .............  ......  ....................
#


#
# (Cannot load tips.txt file, please install perf!)
#

  parent reply	other threads:[~2020-08-21  2:43 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-25 11:44 kernel test robot
2020-04-25 13:01 ` Borislav Petkov
2020-08-18  8:29   ` [LKP] " Feng Tang
2020-08-18 20:06     ` Luck, Tony
2020-08-19  2:04       ` Feng Tang
2020-08-19  2:23         ` Luck, Tony
2020-08-19  3:04           ` Feng Tang
2020-08-19  3:15           ` Feng Tang
2020-08-21  2:02         ` Feng Tang [this message]
2020-08-24 15:14           ` Borislav Petkov
2020-08-24 15:33             ` Feng Tang
2020-08-24 15:38               ` Luck, Tony
2020-08-24 15:48                 ` Feng Tang
2020-08-24 16:12               ` Borislav Petkov
2020-08-24 16:56                 ` Mel Gorman
2020-08-25  6:49                   ` Feng Tang
2020-08-25  6:23                 ` Feng Tang
2020-08-25 16:44                   ` Luck, Tony
2020-08-26  1:45                     ` Feng Tang
2020-08-28 17:48                   ` Borislav Petkov
2020-08-31  2:16                     ` Feng Tang
2020-08-31  7:56                       ` Mel Gorman
2020-08-31  8:23                         ` Feng Tang
2020-08-31  8:55                           ` Mel Gorman
2020-08-31 12:53                             ` Feng Tang

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