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Date:   Thu, 11 Apr 2019 14:35:08 +0800
From:   kernel test robot <rong.a.chen@...el.com>
To:     Waiman Long <longman@...hat.com>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Arnd Bergmann <arnd@...db.de>, Borislav Petkov <bp@...en8.de>,
        Davidlohr Bueso <dave@...olabs.net>,
        "H. Peter Anvin" <hpa@...or.com>,
        "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Tim Chen <tim.c.chen@...ux.intel.com>,
        Will Deacon <will.deacon@....com>,
        LKML <linux-kernel@...r.kernel.org>, tipbuild@...or.com,
        lkp@...org
Subject: [locking/rwsem] 46ad0840b1: reaim.jobs_per_min -3.4% regression

Greeting,

FYI, we noticed a -3.4% regression of reaim.jobs_per_min due to commit:


commit: 46ad0840b1584b92b5ff2cc3ed0b011dd6b8e0f1 ("locking/rwsem: Remove arch specific rwsem files")
https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git WIP.locking/core

in testcase: reaim
on test machine: 48 threads Intel(R) Xeon(R) CPU E5-2697 v2 @ 2.70GHz with 64G memory
with following parameters:

	runtime: 300s
	nr_task: 100t
	test: fork_test
	cpufreq_governor: performance
	ucode: 0x42d

test-description: REAIM is an updated and improved version of AIM 7 benchmark.
test-url: https://sourceforge.net/projects/re-aim-7/



Details are as below:
-------------------------------------------------------------------------------------------------->


To reproduce:

        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        bin/lkp install job.yaml  # job file is attached in this email
        bin/lkp run     job.yaml

=========================================================================================
compiler/cpufreq_governor/kconfig/nr_task/rootfs/runtime/tbox_group/test/testcase/ucode:
  gcc-7/performance/x86_64-rhel-7.6/100t/debian-x86_64-2018-04-03.cgz/300s/ivb44/fork_test/reaim/0x42d

commit: 
  a1247d06d0 ("locking/static_key: Fix false positive warnings on concurrent dec/inc")
  46ad0840b1 ("locking/rwsem: Remove arch specific rwsem files")

a1247d06d01045d7 46ad0840b1584b92b5ff2cc3ed0 
---------------- --------------------------- 
       fail:runs  %reproduction    fail:runs
           |             |             |    
           :5           40%           2:6     dmesg.WARNING:at#for_ip_swapgs_restore_regs_and_return_to_usermode/0x
          1:5            8%           2:6     perf-profile.calltrace.cycles-pp.error_entry
         %stddev     %change         %stddev
             \          |                \  
    319.20            +4.5%     333.70        reaim.child_systime
    228.14            +1.2%     230.79        reaim.child_utime
     50164            -3.4%      48470        reaim.jobs_per_min
    501.65            -3.4%     484.70        reaim.jobs_per_min_child
     51181            -2.4%      49944        reaim.max_jobs_per_min
     11.96            +3.5%      12.38        reaim.parent_time
    307.80            -1.7%     302.61        reaim.time.elapsed_time
    307.80            -1.7%     302.61        reaim.time.elapsed_time.max
  21833132            -4.8%   20791331        reaim.time.involuntary_context_switches
 7.594e+08            -4.4%  7.263e+08        reaim.time.minor_page_faults
      5038            -3.4%       4865        reaim.time.user_time
    220000            -4.5%     210000        reaim.workload
     14617 ±  2%     +10.3%      16128 ±  3%  meminfo.PageTables
      0.03 ± 11%      -0.0        0.02 ± 14%  mpstat.cpu.all.soft%
    320607            +2.6%     328953        vmstat.system.cs
     15491           -86.2%       2133 ±134%  numa-numastat.node0.other_node
    228.33 ±  5%   +5855.5%      13598 ± 21%  numa-numastat.node1.other_node
    108917 ±  4%      -7.8%     100423 ±  3%  softirqs.CPU11.TIMER
    113369            -8.1%     104175 ±  5%  softirqs.CPU40.TIMER
   8966761 ±  5%     +10.7%    9926924 ±  4%  cpuidle.C1.usage
    964538 ±  7%     +88.9%    1821601 ± 11%  cpuidle.POLL.time
    803275 ± 10%    +118.2%    1752897 ± 13%  cpuidle.POLL.usage
   8957861 ±  5%     +10.8%    9923511 ±  4%  turbostat.C1
      0.43 ± 69%      -0.4        0.00        turbostat.PKG_%
      0.02 ±141%    +660.0%       0.13 ± 65%  turbostat.Pkg%pc3
      0.34 ± 62%      -0.3        0.00        turbostat.RAM_%
    789.33 ±  3%     -21.6%     618.67 ±  9%  slabinfo.kmalloc-rcl-128.active_objs
    789.33 ±  3%     -21.6%     618.67 ±  9%  slabinfo.kmalloc-rcl-128.num_objs
      1366           -10.2%       1227 ±  5%  slabinfo.pool_workqueue.active_objs
      1367           -10.0%       1230 ±  5%  slabinfo.pool_workqueue.num_objs
    341.33 ±  8%     +25.0%     426.67 ±  7%  slabinfo.skbuff_fclone_cache.active_objs
    341.33 ±  8%     +25.0%     426.67 ±  7%  slabinfo.skbuff_fclone_cache.num_objs
    153786            +9.3%     168087        numa-vmstat.node0.nr_file_pages
      2967 ± 30%     +61.5%       4793 ±  5%  numa-vmstat.node0.nr_inactive_anon
      3513 ± 15%     +30.3%       4578 ±  2%  numa-vmstat.node0.nr_mapped
      3349 ± 26%    +382.3%      16155 ±  2%  numa-vmstat.node0.nr_shmem
      6987 ± 10%     +65.6%      11569 ±  3%  numa-vmstat.node0.nr_slab_reclaimable
      2967 ± 30%     +61.5%       4793 ±  5%  numa-vmstat.node0.nr_zone_inactive_anon
     25044 ± 54%     -90.7%       2340 ±121%  numa-vmstat.node0.numa_other
    655.67 ± 71%     +62.0%       1062        numa-vmstat.node1.nr_active_file
    169454            -8.4%     155176        numa-vmstat.node1.nr_file_pages
      2152 ± 41%     -82.8%     369.33 ± 59%  numa-vmstat.node1.nr_inactive_anon
      3903 ± 14%     -29.0%       2770 ±  2%  numa-vmstat.node1.nr_mapped
     13327 ±  5%     -95.1%     652.33 ± 35%  numa-vmstat.node1.nr_shmem
     11241 ±  6%     -46.1%       6064 ±  6%  numa-vmstat.node1.nr_slab_reclaimable
    655.67 ± 71%     +62.0%       1062        numa-vmstat.node1.nr_zone_active_file
      2152 ± 41%     -82.8%     369.33 ± 59%  numa-vmstat.node1.nr_zone_inactive_anon
     79276            -2.1%      77572        proc-vmstat.nr_active_anon
     66149            -2.9%      64243        proc-vmstat.nr_anon_pages
      7467            -1.6%       7346        proc-vmstat.nr_mapped
      3756 ±  2%      +5.3%       3956        proc-vmstat.nr_page_table_pages
     18126            -3.1%      17561        proc-vmstat.nr_slab_reclaimable
     79276            -2.1%      77572        proc-vmstat.nr_zone_active_anon
      8473            +8.1%       9162 ±  7%  proc-vmstat.numa_hint_faults
 7.766e+08            -3.9%  7.459e+08        proc-vmstat.numa_hit
 7.765e+08            -3.9%  7.459e+08        proc-vmstat.numa_local
    984.00 ± 74%    +885.9%       9701 ± 97%  proc-vmstat.numa_pages_migrated
     38689 ± 39%     +47.3%      56992 ± 12%  proc-vmstat.numa_pte_updates
 8.078e+08            -4.0%  7.753e+08        proc-vmstat.pgalloc_normal
 7.608e+08            -4.4%  7.276e+08        proc-vmstat.pgfault
 8.077e+08            -4.0%  7.752e+08        proc-vmstat.pgfree
    984.00 ± 74%    +885.9%       9701 ± 97%  proc-vmstat.pgmigrate_success
    615148            +9.3%     672325        numa-meminfo.node0.FilePages
     12293 ± 25%     +55.2%      19080 ±  5%  numa-meminfo.node0.Inactive
     11872 ± 30%     +60.7%      19080 ±  5%  numa-meminfo.node0.Inactive(anon)
     27949 ± 10%     +64.6%      46006 ±  3%  numa-meminfo.node0.KReclaimable
     14085 ± 15%     +28.0%      18031        numa-meminfo.node0.Mapped
     27949 ± 10%     +64.6%      46006 ±  3%  numa-meminfo.node0.SReclaimable
     13401 ± 26%    +382.0%      64597 ±  2%  numa-meminfo.node0.Shmem
    104587 ±  4%     +14.0%     119233 ±  2%  numa-meminfo.node0.Slab
      2624 ± 71%     +61.9%       4249        numa-meminfo.node1.Active(file)
    677803            -8.4%     620707        numa-meminfo.node1.FilePages
      9431 ± 32%     -72.2%       2619 ± 33%  numa-meminfo.node1.Inactive
      8710 ± 41%     -83.0%       1479 ± 59%  numa-meminfo.node1.Inactive(anon)
     44608 ±  4%     -45.6%      24259 ±  6%  numa-meminfo.node1.KReclaimable
     15357 ± 14%     -28.9%      10924        numa-meminfo.node1.Mapped
     44608 ±  4%     -45.6%      24259 ±  6%  numa-meminfo.node1.SReclaimable
     53293 ±  5%     -95.1%       2611 ± 35%  numa-meminfo.node1.Shmem
    109835 ±  4%     -16.5%      91708 ±  2%  numa-meminfo.node1.Slab
    198438 ± 19%     -48.3%     102613 ± 29%  sched_debug.cfs_rq:/.MIN_vruntime.avg
    872601 ± 15%     -44.0%     488425 ± 20%  sched_debug.cfs_rq:/.MIN_vruntime.stddev
     58877 ±  4%     -32.5%      39716 ± 12%  sched_debug.cfs_rq:/.load.avg
    884652 ± 13%     -36.3%     563479        sched_debug.cfs_rq:/.load.max
    170539 ± 10%     -44.5%      94726 ± 11%  sched_debug.cfs_rq:/.load.stddev
    198438 ± 19%     -48.3%     102613 ± 29%  sched_debug.cfs_rq:/.max_vruntime.avg
    872601 ± 15%     -44.0%     488425 ± 20%  sched_debug.cfs_rq:/.max_vruntime.stddev
     98.43 ± 20%     +44.2%     141.96 ± 17%  sched_debug.cfs_rq:/.removed.load_avg.avg
      4591 ± 20%     +42.7%       6553 ± 17%  sched_debug.cfs_rq:/.removed.runnable_sum.avg
     20.87 ± 11%     +50.0%      31.30 ± 14%  sched_debug.cfs_rq:/.removed.util_avg.avg
     67.81 ±  5%     +19.5%      81.04 ± 11%  sched_debug.cfs_rq:/.removed.util_avg.stddev
     40.35 ± 15%     -23.4%      30.90 ± 10%  sched_debug.cfs_rq:/.runnable_load_avg.avg
    629.17 ± 11%     -23.5%     481.17 ± 16%  sched_debug.cfs_rq:/.runnable_load_avg.max
    118.51 ± 16%     -31.1%      81.69 ±  4%  sched_debug.cfs_rq:/.runnable_load_avg.stddev
     56059 ±  8%     -37.8%      34866 ± 13%  sched_debug.cfs_rq:/.runnable_weight.avg
    876174 ± 14%     -37.1%     551504        sched_debug.cfs_rq:/.runnable_weight.max
    171272 ± 11%     -45.1%      94102 ± 11%  sched_debug.cfs_rq:/.runnable_weight.stddev
     31227 ± 19%     -32.2%      21174 ± 32%  sched_debug.cfs_rq:/.spread0.avg
      1223 ±  4%     +16.5%       1425 ±  3%  sched_debug.cfs_rq:/.util_avg.max
    213.82 ±  2%     +11.2%     237.75        sched_debug.cfs_rq:/.util_avg.stddev
    124.17 ±  4%     +12.4%     139.59 ±  4%  sched_debug.cfs_rq:/.util_est_enqueued.stddev
    219522 ± 24%     -23.3%     168384 ± 18%  sched_debug.cpu.avg_idle.avg
     11161 ±  7%     -26.2%       8235 ± 16%  sched_debug.cpu.avg_idle.min
    451.78 ±  7%     -15.1%     383.78 ±  7%  sched_debug.cpu.cpu_load[1].max
     85.00 ± 10%     -21.7%      66.56 ± 10%  sched_debug.cpu.cpu_load[1].stddev
    277.61 ± 10%     -17.9%     227.94 ±  9%  sched_debug.cpu.cpu_load[2].max
     56.14 ± 11%     -18.5%      45.73 ±  9%  sched_debug.cpu.cpu_load[2].stddev
     52735 ±  8%     +32.7%      69975 ±  8%  sched_debug.cpu.curr->pid.avg
     77254 ±  6%     +23.7%      95588 ±  6%  sched_debug.cpu.curr->pid.max
    102587 ± 23%     +28.5%     131794 ±  7%  sched_debug.cpu.load.stddev
      2153 ±  8%     -20.9%       1703 ± 23%  sched_debug.cpu.nr_load_updates.stddev
     12689 ±  7%     -11.4%      11237 ±  3%  sched_debug.cpu.nr_switches.stddev
      0.05 ± 48%    +126.8%       0.11 ± 24%  sched_debug.cpu.nr_uninterruptible.avg
   -333.33           +32.1%    -440.17        sched_debug.cpu.nr_uninterruptible.min
    111.56 ±  2%     +18.4%     132.09        sched_debug.cpu.nr_uninterruptible.stddev
  8.47e+09            +2.8%  8.707e+09        perf-stat.i.branch-instructions
 1.006e+08            -2.5%   98077383        perf-stat.i.branch-misses
 1.205e+08            -2.5%  1.174e+08        perf-stat.i.cache-misses
 1.034e+09            -2.5%  1.008e+09        perf-stat.i.cache-references
    323541            +2.8%     332474        perf-stat.i.context-switches
     25454            +5.5%      26847 ±  2%  perf-stat.i.cpu-migrations
 1.217e+10            +3.9%  1.264e+10        perf-stat.i.dTLB-loads
 5.319e+09            -2.7%  5.174e+09        perf-stat.i.dTLB-stores
  29193114            -2.4%   28497000        perf-stat.i.iTLB-load-misses
 4.178e+10            +3.4%  4.319e+10        perf-stat.i.instructions
      1424            +4.5%       1487        perf-stat.i.instructions-per-iTLB-miss
   2472806            -2.9%    2402150        perf-stat.i.minor-faults
  78070119            -2.8%   75920079        perf-stat.i.node-load-misses
  82100776            -2.7%   79853820        perf-stat.i.node-loads
   2472804            -2.9%    2402149        perf-stat.i.page-faults
     24.75            -5.7%      23.35        perf-stat.overall.MPKI
      1.19            -0.1        1.13        perf-stat.overall.branch-miss-rate%
      2.85            -3.1%       2.77        perf-stat.overall.cpi
    989.57            +2.8%       1017        perf-stat.overall.cycles-between-cache-misses
      1431            +5.9%       1515        perf-stat.overall.instructions-per-iTLB-miss
      0.35            +3.2%       0.36        perf-stat.overall.ipc
  58325624            +6.7%   62258667        perf-stat.overall.path-length
 8.442e+09            +2.8%  8.678e+09        perf-stat.ps.branch-instructions
 1.003e+08            -2.5%   97753949        perf-stat.ps.branch-misses
 1.201e+08            -2.5%  1.171e+08        perf-stat.ps.cache-misses
 1.031e+09            -2.5%  1.005e+09        perf-stat.ps.cache-references
    322473            +2.8%     331365        perf-stat.ps.context-switches
     25370            +5.5%      26758 ±  2%  perf-stat.ps.cpu-migrations
 1.213e+10            +3.9%   1.26e+10        perf-stat.ps.dTLB-loads
 5.302e+09            -2.7%  5.157e+09        perf-stat.ps.dTLB-stores
  29096816            -2.4%   28402005        perf-stat.ps.iTLB-load-misses
 4.165e+10            +3.4%  4.305e+10        perf-stat.ps.instructions
   2464656            -2.9%    2394142        perf-stat.ps.minor-faults
  77812636            -2.8%   75666866        perf-stat.ps.node-load-misses
  81830010            -2.7%   79587500        perf-stat.ps.node-loads
   2464651            -2.9%    2394141        perf-stat.ps.page-faults
    244.00 ±  2%    +125.7%     550.67 ± 36%  interrupts.35:IR-PCI-MSI.2621441-edge.eth0-TxRx-0
    184.67 ±  6%     -15.2%     156.67        interrupts.36:IR-PCI-MSI.2621442-edge.eth0-TxRx-1
    358.33 ± 74%     -56.3%     156.67        interrupts.37:IR-PCI-MSI.2621443-edge.eth0-TxRx-2
    201599            -1.2%     199147        interrupts.CAL:Function_call_interrupts
    283.00 ±  9%     -18.4%     231.00 ±  7%  interrupts.CPU1.TLB:TLB_shootdowns
      1163 ±131%    +473.3%       6671        interrupts.CPU10.NMI:Non-maskable_interrupts
      1163 ±131%    +473.3%       6671        interrupts.CPU10.PMI:Performance_monitoring_interrupts
    345.33 ±  8%     -34.8%     225.00 ± 16%  interrupts.CPU11.TLB:TLB_shootdowns
      4375 ±  2%      -7.2%       4060 ±  5%  interrupts.CPU12.CAL:Function_call_interrupts
      4277 ±  3%      -9.1%       3888 ±  3%  interrupts.CPU13.CAL:Function_call_interrupts
    331.00 ±  5%     -23.0%     255.00 ±  5%  interrupts.CPU14.TLB:TLB_shootdowns
      1115 ±141%    +303.1%       4496 ± 35%  interrupts.CPU16.NMI:Non-maskable_interrupts
      1115 ±141%    +303.1%       4496 ± 35%  interrupts.CPU16.PMI:Performance_monitoring_interrupts
      1136 ±137%    +197.0%       3375        interrupts.CPU18.NMI:Non-maskable_interrupts
      1136 ±137%    +197.0%       3375        interrupts.CPU18.PMI:Performance_monitoring_interrupts
    247.67 ± 15%     +21.0%     299.67 ±  7%  interrupts.CPU19.TLB:TLB_shootdowns
    245.00 ± 18%     +26.3%     309.33 ±  7%  interrupts.CPU20.TLB:TLB_shootdowns
    270.67 ± 27%     +39.5%     377.67 ±  9%  interrupts.CPU21.TLB:TLB_shootdowns
     99.00 ± 53%   +3296.0%       3362        interrupts.CPU22.NMI:Non-maskable_interrupts
     99.00 ± 53%   +3296.0%       3362        interrupts.CPU22.PMI:Performance_monitoring_interrupts
    244.00 ±  2%    +125.7%     550.67 ± 36%  interrupts.CPU24.35:IR-PCI-MSI.2621441-edge.eth0-TxRx-0
    184.67 ±  6%     -15.2%     156.67        interrupts.CPU25.36:IR-PCI-MSI.2621442-edge.eth0-TxRx-1
    358.33 ± 74%     -56.3%     156.67        interrupts.CPU26.37:IR-PCI-MSI.2621443-edge.eth0-TxRx-2
      2.00 ± 81%  +57150.0%       1145 ±138%  interrupts.CPU26.NMI:Non-maskable_interrupts
      2.00 ± 81%  +57150.0%       1145 ±138%  interrupts.CPU26.PMI:Performance_monitoring_interrupts
    310.00 ±  5%     -28.0%     223.33 ±  5%  interrupts.CPU27.TLB:TLB_shootdowns
      3360           -66.9%       1113 ±140%  interrupts.CPU29.NMI:Non-maskable_interrupts
      3360           -66.9%       1113 ±140%  interrupts.CPU29.PMI:Performance_monitoring_interrupts
      1112 ±141%    +402.7%       5592 ± 28%  interrupts.CPU3.NMI:Non-maskable_interrupts
      1112 ±141%    +402.7%       5592 ± 28%  interrupts.CPU3.PMI:Performance_monitoring_interrupts
    213.67 ± 14%     +21.8%     260.33 ± 17%  interrupts.CPU31.TLB:TLB_shootdowns
      3356 ± 80%     -99.5%      17.00 ± 84%  interrupts.CPU34.NMI:Non-maskable_interrupts
      3356 ± 80%     -99.5%      17.00 ± 84%  interrupts.CPU34.PMI:Performance_monitoring_interrupts
      1123 ±138%    +401.6%       5633 ± 28%  interrupts.CPU37.NMI:Non-maskable_interrupts
      1123 ±138%    +401.6%       5633 ± 28%  interrupts.CPU37.PMI:Performance_monitoring_interrupts
      1143 ±136%    +292.3%       4484 ± 34%  interrupts.CPU41.NMI:Non-maskable_interrupts
      1143 ±136%    +292.3%       4484 ± 34%  interrupts.CPU41.PMI:Performance_monitoring_interrupts
    230.33 ±  9%     +25.5%     289.00 ± 12%  interrupts.CPU42.TLB:TLB_shootdowns
      1134 ±137%    +209.6%       3511 ± 71%  interrupts.CPU43.NMI:Non-maskable_interrupts
      1134 ±137%    +209.6%       3511 ± 71%  interrupts.CPU43.PMI:Performance_monitoring_interrupts
    319.00 ±  7%     -33.4%     212.33 ±  5%  interrupts.CPU43.TLB:TLB_shootdowns
      1146 ±133%    +289.2%       4462 ± 35%  interrupts.CPU44.NMI:Non-maskable_interrupts
      1146 ±133%    +289.2%       4462 ± 35%  interrupts.CPU44.PMI:Performance_monitoring_interrupts
    633.00 ±140%    +604.5%       4459 ± 34%  interrupts.CPU5.NMI:Non-maskable_interrupts
    633.00 ±140%    +604.5%       4459 ± 34%  interrupts.CPU5.PMI:Performance_monitoring_interrupts
    285.33 ±  4%     -31.2%     196.33 ± 26%  interrupts.CPU6.TLB:TLB_shootdowns
    308.00 ±  6%     -18.4%     251.33 ± 20%  interrupts.CPU9.TLB:TLB_shootdowns
    108747 ±  5%     +32.4%     144006 ± 13%  interrupts.NMI:Non-maskable_interrupts
    108747 ±  5%     +32.4%     144006 ± 13%  interrupts.PMI:Performance_monitoring_interrupts
     25.95 ±  4%     -19.2        6.78 ± 11%  perf-profile.calltrace.cycles-pp.__libc_fork
     23.30 ±  5%     -17.2        6.15 ± 11%  perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__libc_fork
     23.30 ±  5%     -17.2        6.15 ± 11%  perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__libc_fork
     23.29 ±  5%     -17.1        6.14 ± 11%  perf-profile.calltrace.cycles-pp._do_fork.do_syscall_64.entry_SYSCALL_64_after_hwframe.__libc_fork
     22.32 ±  4%     -16.4        5.91 ± 11%  perf-profile.calltrace.cycles-pp.copy_process._do_fork.do_syscall_64.entry_SYSCALL_64_after_hwframe.__libc_fork
      5.57 ±  3%      -5.6        0.00        perf-profile.calltrace.cycles-pp.call_rwsem_down_write_failed.down_write.anon_vma_fork.copy_process._do_fork
      5.55 ±  3%      -5.5        0.00        perf-profile.calltrace.cycles-pp.rwsem_down_write_failed.call_rwsem_down_write_failed.down_write.anon_vma_fork.copy_process
      5.34 ±  2%      -5.3        0.00        perf-profile.calltrace.cycles-pp.call_rwsem_down_write_failed.down_write.unlink_anon_vmas.free_pgtables.exit_mmap
      5.33 ±  2%      -5.3        0.00        perf-profile.calltrace.cycles-pp.rwsem_down_write_failed.call_rwsem_down_write_failed.down_write.unlink_anon_vmas.free_pgtables
      4.40 ± 10%      -3.4        0.99 ±  9%  perf-profile.calltrace.cycles-pp.wait
      3.97 ± 10%      -3.1        0.88 ±  9%  perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.wait
      3.95 ± 10%      -3.1        0.88 ±  9%  perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.wait
      3.93 ± 10%      -3.0        0.88 ±  9%  perf-profile.calltrace.cycles-pp.__do_sys_wait4.do_syscall_64.entry_SYSCALL_64_after_hwframe.wait
      3.93 ± 10%      -3.0        0.88 ±  9%  perf-profile.calltrace.cycles-pp.kernel_wait4.__do_sys_wait4.do_syscall_64.entry_SYSCALL_64_after_hwframe.wait
      2.52 ±  9%      -0.7        1.84        perf-profile.calltrace.cycles-pp.queued_read_lock_slowpath.do_wait.kernel_wait4.__do_sys_wait4.do_syscall_64
      2.83            -0.6        2.26 ± 13%  perf-profile.calltrace.cycles-pp.anon_vma_interval_tree_insert.anon_vma_clone.anon_vma_fork.copy_process._do_fork
      7.70 ±  2%      -0.5        7.15 ±  3%  perf-profile.calltrace.cycles-pp.tlb_finish_mmu.exit_mmap.mmput.do_exit.do_group_exit
      7.69 ±  2%      -0.5        7.14 ±  3%  perf-profile.calltrace.cycles-pp.arch_tlb_finish_mmu.tlb_finish_mmu.exit_mmap.mmput.do_exit
      7.62 ±  2%      -0.5        7.09 ±  3%  perf-profile.calltrace.cycles-pp.tlb_flush_mmu_free.arch_tlb_finish_mmu.tlb_finish_mmu.exit_mmap.mmput
      5.01 ±  4%      -0.5        4.48 ±  2%  perf-profile.calltrace.cycles-pp.do_wait.kernel_wait4.__do_sys_wait4.do_syscall_64.entry_SYSCALL_64_after_hwframe
      8.09 ±  3%      -0.5        7.62 ±  3%  perf-profile.calltrace.cycles-pp.unmap_vmas.exit_mmap.mmput.do_exit.do_group_exit
      6.17 ±  2%      -0.4        5.74 ±  3%  perf-profile.calltrace.cycles-pp.release_pages.tlb_flush_mmu_free.arch_tlb_finish_mmu.tlb_finish_mmu.exit_mmap
      1.83 ±  2%      -0.4        1.43 ±  2%  perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath.queued_read_lock_slowpath.do_wait.kernel_wait4.__do_sys_wait4
      0.61 ±  3%      -0.2        0.36 ± 70%  perf-profile.calltrace.cycles-pp.lru_add_drain_cpu.lru_add_drain.exit_mmap.mmput.do_exit
      0.61 ±  3%      -0.2        0.37 ± 70%  perf-profile.calltrace.cycles-pp.lru_add_drain.exit_mmap.mmput.do_exit.do_group_exit
      0.59 ±  3%      -0.2        0.36 ± 70%  perf-profile.calltrace.cycles-pp.pagevec_lru_move_fn.lru_add_drain_cpu.lru_add_drain.exit_mmap.mmput
      4.11 ±  2%      -0.2        3.92        perf-profile.calltrace.cycles-pp.copy_page_range.copy_process._do_fork.do_syscall_64.entry_SYSCALL_64_after_hwframe
      3.94 ±  2%      -0.2        3.75        perf-profile.calltrace.cycles-pp.copy_p4d_range.copy_page_range.copy_process._do_fork.do_syscall_64
      1.01 ±  8%      -0.1        0.86 ±  3%  perf-profile.calltrace.cycles-pp.queued_write_lock_slowpath.do_exit.do_group_exit.__x64_sys_exit_group.do_syscall_64
      0.79 ±  9%      -0.1        0.66 ±  5%  perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath.queued_write_lock_slowpath.do_exit.do_group_exit.__x64_sys_exit_group
      1.44 ±  4%      -0.1        1.33        perf-profile.calltrace.cycles-pp.free_pages_and_swap_cache.tlb_flush_mmu_free.arch_tlb_finish_mmu.tlb_finish_mmu.exit_mmap
      0.76 ±  2%      -0.1        0.71        perf-profile.calltrace.cycles-pp.remove_vma.exit_mmap.mmput.do_exit.do_group_exit
      1.01            -0.0        0.97 ±  2%  perf-profile.calltrace.cycles-pp.__slab_free.kmem_cache_free.unlink_anon_vmas.free_pgtables.exit_mmap
      1.10            -0.0        1.07        perf-profile.calltrace.cycles-pp.kmem_cache_free.unlink_anon_vmas.free_pgtables.exit_mmap.mmput
      0.60            +0.0        0.65 ±  3%  perf-profile.calltrace.cycles-pp.alloc_pages_vma.wp_page_copy.do_wp_page.__handle_mm_fault.handle_mm_fault
      0.65 ±  2%      +0.1        0.71 ±  6%  perf-profile.calltrace.cycles-pp.swapgs_restore_regs_and_return_to_usermode
      3.57 ±  5%      +0.4        3.93 ±  5%  perf-profile.calltrace.cycles-pp.intel_idle.cpuidle_enter_state.do_idle.cpu_startup_entry.start_secondary
      4.02 ±  6%      +0.4        4.47 ±  6%  perf-profile.calltrace.cycles-pp.cpuidle_enter_state.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64
      4.65 ±  3%      +0.5        5.10 ±  4%  perf-profile.calltrace.cycles-pp.secondary_startup_64
      4.50 ±  5%      +0.5        5.01 ±  5%  perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64
      4.51 ±  6%      +0.5        5.02 ±  5%  perf-profile.calltrace.cycles-pp.start_secondary.secondary_startup_64
      4.50 ±  5%      +0.5        5.02 ±  5%  perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.secondary_startup_64
      0.00            +0.5        0.52        perf-profile.calltrace.cycles-pp.__alloc_pages_nodemask.alloc_pages_vma.wp_page_copy.do_wp_page.__handle_mm_fault
      0.00            +0.6        0.56 ±  2%  perf-profile.calltrace.cycles-pp.page_fault.__put_user_4.schedule_tail.ret_from_fork
      0.00            +0.6        0.56 ±  2%  perf-profile.calltrace.cycles-pp.__put_user_4.schedule_tail.ret_from_fork
      1.13 ±  8%      +0.6        1.69        perf-profile.calltrace.cycles-pp.ret_from_fork
      0.00            +0.7        0.72 ±  3%  perf-profile.calltrace.cycles-pp.rwsem_spin_on_owner.rwsem_down_write_failed.down_write.anon_vma_clone.anon_vma_fork
      0.00            +0.8        0.83        perf-profile.calltrace.cycles-pp.rwsem_spin_on_owner.rwsem_down_write_failed.down_write.anon_vma_fork.copy_process
      0.00            +0.8        0.84 ±  2%  perf-profile.calltrace.cycles-pp.rwsem_spin_on_owner.rwsem_down_write_failed.down_write.unlink_anon_vmas.free_pgtables
      0.00            +0.9        0.86        perf-profile.calltrace.cycles-pp.schedule_tail.ret_from_fork
      9.74 ±  2%      +0.9       10.68 ±  5%  perf-profile.calltrace.cycles-pp.anon_vma_clone.anon_vma_fork.copy_process._do_fork.do_syscall_64
      0.00            +0.9        0.95        perf-profile.calltrace.cycles-pp.wake_up_new_task._do_fork.do_syscall_64.entry_SYSCALL_64_after_hwframe
      5.78 ±  3%      +1.0        6.81 ±  9%  perf-profile.calltrace.cycles-pp.down_write.anon_vma_fork.copy_process._do_fork.do_syscall_64
      5.08 ±  3%      +1.2        6.33 ± 10%  perf-profile.calltrace.cycles-pp.down_write.anon_vma_clone.anon_vma_fork.copy_process._do_fork
      5.69 ±  2%      +1.3        7.00 ± 10%  perf-profile.calltrace.cycles-pp.down_write.unlink_anon_vmas.free_pgtables.exit_mmap.mmput
     35.70            +1.5       37.20        perf-profile.calltrace.cycles-pp.do_exit.do_group_exit.__x64_sys_exit_group.do_syscall_64.entry_SYSCALL_64_after_hwframe
     35.71            +1.5       37.22        perf-profile.calltrace.cycles-pp.do_group_exit.__x64_sys_exit_group.do_syscall_64.entry_SYSCALL_64_after_hwframe
     35.71            +1.5       37.22        perf-profile.calltrace.cycles-pp.__x64_sys_exit_group.do_syscall_64.entry_SYSCALL_64_after_hwframe
     32.20            +1.7       33.86 ±  2%  perf-profile.calltrace.cycles-pp.mmput.do_exit.do_group_exit.__x64_sys_exit_group.do_syscall_64
     32.13            +1.7       33.79 ±  2%  perf-profile.calltrace.cycles-pp.exit_mmap.mmput.do_exit.do_group_exit.__x64_sys_exit_group
      2.96 ±  8%      +1.7        4.65 ± 13%  perf-profile.calltrace.cycles-pp.down_write.__put_anon_vma.unlink_anon_vmas.free_pgtables.exit_mmap
      3.74 ±  8%      +1.7        5.45 ± 11%  perf-profile.calltrace.cycles-pp.__put_anon_vma.unlink_anon_vmas.free_pgtables.exit_mmap.mmput
     16.96 ±  2%      +1.9       18.89 ±  6%  perf-profile.calltrace.cycles-pp.anon_vma_fork.copy_process._do_fork.do_syscall_64.entry_SYSCALL_64_after_hwframe
      1.13 ± 18%      +2.5        3.64 ±  2%  perf-profile.calltrace.cycles-pp.kernel_wait4.__do_sys_wait4.do_syscall_64.entry_SYSCALL_64_after_hwframe
      1.13 ± 18%      +2.5        3.65        perf-profile.calltrace.cycles-pp.__do_sys_wait4.do_syscall_64.entry_SYSCALL_64_after_hwframe
     14.70 ±  3%      +2.8       17.53 ±  6%  perf-profile.calltrace.cycles-pp.free_pgtables.exit_mmap.mmput.do_exit.do_group_exit
     12.95 ±  3%      +3.0       15.93 ±  8%  perf-profile.calltrace.cycles-pp.unlink_anon_vmas.free_pgtables.exit_mmap.mmput.do_exit
      0.00            +3.8        3.83 ± 15%  perf-profile.calltrace.cycles-pp.osq_lock.rwsem_down_write_failed.down_write.__put_anon_vma.unlink_anon_vmas
      0.00            +4.6        4.59 ± 13%  perf-profile.calltrace.cycles-pp.rwsem_down_write_failed.down_write.__put_anon_vma.unlink_anon_vmas.free_pgtables
      0.00            +4.6        4.65 ± 13%  perf-profile.calltrace.cycles-pp.osq_lock.rwsem_down_write_failed.down_write.anon_vma_clone.anon_vma_fork
      0.00            +5.0        5.02 ± 11%  perf-profile.calltrace.cycles-pp.osq_lock.rwsem_down_write_failed.down_write.anon_vma_fork.copy_process
      0.00            +5.2        5.21 ± 13%  perf-profile.calltrace.cycles-pp.osq_lock.rwsem_down_write_failed.down_write.unlink_anon_vmas.free_pgtables
      0.00            +6.1        6.07 ± 10%  perf-profile.calltrace.cycles-pp.rwsem_down_write_failed.down_write.anon_vma_clone.anon_vma_fork.copy_process
      0.00            +6.6        6.60 ±  9%  perf-profile.calltrace.cycles-pp.rwsem_down_write_failed.down_write.anon_vma_fork.copy_process._do_fork
      0.00            +6.6        6.62 ± 11%  perf-profile.calltrace.cycles-pp.rwsem_down_write_failed.down_write.unlink_anon_vmas.free_pgtables.exit_mmap
      6.72 ± 19%     +17.5       24.22 ±  4%  perf-profile.calltrace.cycles-pp.copy_process._do_fork.do_syscall_64.entry_SYSCALL_64_after_hwframe
      7.01 ± 19%     +18.2       25.22 ±  4%  perf-profile.calltrace.cycles-pp._do_fork.do_syscall_64.entry_SYSCALL_64_after_hwframe
     44.08 ±  3%     +22.8       66.84 ±  2%  perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe
     44.08 ±  3%     +22.8       66.86 ±  2%  perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe


                                                                                
                            reaim.time.minor_page_faults                        
                                                                                
  8e+08 +-+-----------------------------------------------------------------+   
        | OO  +   O  O.O+ O  O  O   +O O    OO +  O  +.+    +  +  +   ++  +.|   
  7e+08 +-+:  :   :  :  :    :  :   ::      :  :  :  : :    :  :  :   ::  : |   
  6e+08 +-+:  :   :  :  :    :  :   ::      :  :  :  : :    :  :  :   ::  : |   
        |  :  :   :  :  :    :  :   ::      :  :  :  : :    :  :  :   ::  : |   
  5e+08 +-+:: :: :: :    :  : : :: :  :    :: :: : : :  :  :: : : :: :  : : |   
        |  :: :: :: :    :  : : :: :  :    :: :: : : :  :  :: : : :: :  : : |   
  4e+08 +-+:: :: :: :    :  : : :: :  :    :: :: : : :  :  :: : : :: :  : : |   
        | : :: : : ::    :  : :: : :  :    : :: :: ::   :  : :: :: : :  ::  |   
  3e+08 +-+ :: : : ::    :  : :: : :  :    : :: :: ::   :  : :: :: : :  ::  |   
  2e+08 +-+ :: : : ::    :  : :: : :  :    : :: :: ::   :  : :: :: : :  ::  |   
        | :  :  :  :      ::   :  :    :  :  :  :   :    ::  :   :  :    :  |   
  1e+08 +-+  :  :  :      ::   :  :    :  :  :  :   :    ::  :   :  :    :  |   
        | :  :  :  :      ::   :  :    :  :  :  :   :    ::  :   :  :    :  |   
      0 O-+--OO-O--O----O--O---O--O-O---O-O----OO---------------------------+   
                                                                                
                                                                                                                                                                
                        reaim.time.involuntary_context_switches                 
                                                                                
  2.5e+07 +-+---------------------------------------------------------------+   
          |                                                                 |   
          | OO  +  O   OO.+O  O   O  +O O    OO +  O  +.+   +  +   +  ++  +.|   
    2e+07 +-+:  :  :   :  :   :   :  ::      :  :  :  : :   :  :   :  ::  : |   
          |  :  :  :   :  :   :   :  ::      :  :  :  : :   :  :   :  ::  : |   
          |  :: :: ::  :  :   ::  :  : :     :  :  :  : :   :: ::  :  : : : |   
  1.5e+07 +-+:: :: :: :   :   :: :: :  :    :: :: :: :  :   :: :: :: :  : : |   
          |  :: :: :: :   :   :: :: :  :    :: :: :: :  :   :: :: :: :  : : |   
    1e+07 +-+:: :: :: :    :  :: : ::  :    : :: :: ::   :  :: :: : ::  : : |   
          | : :: :: : :    : : : : ::  :    : :: :: ::   : : :: : : ::  ::  |   
          | : :: :: : :    : : : : ::  :    : :: :: ::   : : :: : : ::  ::  |   
    5e+06 +-+  :  :  ::    : :  :: ::   :   : :: :: ::   : :  :  :: ::   :  |   
          | :  :  :  :     : :  :  :    :  :  :  :  :    : :  :  :  :    :  |   
          | :  :  :  :     : :  :  :    :  :  :  :  :    : :  :  :  :    :  |   
        0 O-+--OO-O--O----O--O--O--O-O---O-O----OO--------------------------+   
                                                                                
                                                                                                                                                                
                                reaim.parent_time                               
                                                                                
  14 +-+--------------------------------------------------------------------+   
     |             OO              O      O                                 |   
  12 +-OO   +  O   ++.+ O  O  O   ++ O    + O +  O  +.+    +  +   +  +.+  +.|   
     |  :   :  :   :  :    :  :   ::      :   :  :  : :    :  :   :  : :  : |   
  10 +-+:   :  :   :  :    :  :   ::      :   :  :  : :    :  :   :  : :  : |   
     |  ::  :  ::  :   :   :: ::  : :     ::  :  :: :  :   :: ::  :: :  : : |   
   8 +-+:: :: : : :    :  : : :: :  :     :: :: : : :  :  : : :: : : :  : : |   
     |  :: :: : : :    :  : : :: :  :     :: :: : : :  :  : : :: : : :  : : |   
   6 +-+:: : :: : :    :  : : :: :  :     :: : :: : :  :  : : :: : : :  : : |   
     | : : : :: : :    :  : :: : :  :    : : : :: ::   :  : :: : : ::   ::  |   
   4 +-+ : : :: : :    :  : :: : :  :    : : : :: ::   :  : :: : : ::   ::  |   
     | :  :: ::  ::     : :  :  ::   :   :  :: ::  :    : :  :  ::  :    :  |   
   2 +-+  :  :   :      ::   :  :    :   :  :  :   :    ::   :  :   :    :  |   
     | :  :  :   :      ::   :  :    :   :  :  :   :    ::   :  :   :    :  |   
   0 O-+--O-OO---O----O--O---O--O-O----O-O----OO----------------------------+   
                                                                                
                                                                                                                                                                
                                reaim.child_systime                             
                                                                                
  350 +-+----------O-O---------O----O-O----O--------------------------------+   
      | OO   +  O  +.+.+O   O  +  +.+      +O +  O   ++    +   +  +  +.+  +.|   
  300 +-+:   :  :  :   :    :  :  : :      :  :  :   ::    :   :  :  : :  : |   
      |  :   :  :  :   :    :  :  : :      :  :  :   ::    :   :  :  : :  : |   
  250 +-+:   :  :  :   :    :  :  : :      :  :  :   ::    :   :  :  : :  : |   
      |  :: :: : : :   :   :: : : :  :    :: : : :: :  :   :: :: : : :  : : |   
  200 +-+:: :: : : :   :   :: : : :  :    :: : : :: :  :   :: :: : : :  : : |   
      |  :: :: : : :   :   :: : : :  :    :: : : :: :  :   :: :: : : :  : : |   
  150 +-+ : : :: ::     :  : :: ::   :    : :: :: : :  :  : : : :: ::   ::  |   
      | : : : :: ::     :  : :: ::   :    : :: :: : :  :  : : : :: ::   ::  |   
  100 +-+ : : :: ::     :  : :: ::   :    : :: :: : :  :  : : : :: ::   ::  |   
      | :  :  :   :     : :  :   :    :  :  :   :  :    : :  :  :   :    :  |   
   50 +-+  :  :   :     : :  :   :    :  :  :   :  :    : :  :  :   :    :  |   
      | :  :  :   :     : :  :   :    :  :  :   :  :    : :  :  :   :    :  |   
    0 O-+--O-OO---O----O--O--O---OO----O-O----O-O---------------------------+   
                                                                                
                                                                                                                                                                
                                 reaim.jobs_per_min                             
                                                                                
  60000 +-+-----------------------------------------------------------------+   
        |                                                                   |   
  50000 +-++  +   +  +.++    +  +   ++      +  +  +  +.+    +  +  +   ++  +.|   
        | OO  :   O  O O: O  O  O   :O O    OO :  O  : :    :  :  :   ::  : |   
        |  :  :   :  :  :    :  :   ::      :  :  :  : :    :  :  :   ::  : |   
  40000 +-+:: ::  :  :   :   :: ::  : :     :  :  :: :  :   :  :: ::  : : : |   
        |  :: :: :: :    :  : : :: :  :    :: :: : : :  :  :: : : :: :  : : |   
  30000 +-+:: :: :: :    :  : : :: :  :    :: :: : : :  :  :: : : :: :  : : |   
        |  :: :: : ::    :  : : :: :  :    : :: :: : :  :  : :: : :: :  : : |   
  20000 +-+ :: : : ::    :  : :: : :  :    : :: :: ::   :  : :: :: : :  ::  |   
        | : :: : : ::    :  : :: : :  :    : :: :: ::   :  : :: :: : :  ::  |   
        | :  :  :: ::     : :  :  ::   :   : :: ::  :    : : ::  :  ::   :  |   
  10000 +-+  :  :  :      ::   :  :    :  :  :  :   :    ::  :   :  :    :  |   
        | :  :  :  :      ::   :  :    :  :  :  :   :    ::  :   :  :    :  |   
      0 O-+--OO-O--O----O--O---O--O-O---O-O----OO---------------------------+   
                                                                                
                                                                                                                                                                
                             reaim.jobs_per_min_child                           
                                                                                
  600 +-+-------------------------------------------------------------------+   
      |                                                                     |   
  500 +-++   +  +  +.+.+    +  +  +.+      +  +  +   ++    +   +  +  +.+  +.|   
      | OO   :  O  O O :O   O  O  : O O    OO :  O   ::    :   :  :  : :  : |   
      |  :   :  :  :   :    :  :  : :      :  :  :   ::    :   :  :  : :  : |   
  400 +-+::  :  :: :   :    :  :: :  :     :  :: ::  : :   ::  :  :: :  : : |   
      |  :: :: : : :   :   :: : : :  :    :: : : :: :  :   :: :: : : :  : : |   
  300 +-+:: :: : : :   :   :: : : :  :    :: : : :: :  :   :: :: : : :  : : |   
      |  :: : :: : :    :  : :: : :  :    : :: : :: :  :   :: : :: : :  : : |   
  200 +-+ : : :: ::     :  : :: ::   :    : :: :: : :  :  : : : :: ::   ::  |   
      | : : : :: ::     :  : :: ::   :    : :: :: : :  :  : : : :: ::   ::  |   
      | :  :: ::  :     :  : ::  :    :   : ::  :  ::   : :  :: ::  :    :  |   
  100 +-+  :  :   :     : :  :   :    :  :  :   :  :    : :  :  :   :    :  |   
      | :  :  :   :     : :  :   :    :  :  :   :  :    : :  :  :   :    :  |   
    0 O-+--O-OO---O----O--O--O---OO----O-O----O-O---------------------------+   
                                                                                
                                                                                                                                                                
                                   reaim.workload                               
                                                                                
  250000 +-+----------------------------------------------------------------+   
         |                                                                  |   
         | OO  +   O  OO.+ O  O  O  +.OO    O O+  O   ++    +  +  +   ++  +.|   
  200000 +-+:  :   :  :  :    :  :  : :     :  :  :   ::    :  :  :   ::  : |   
         |  :  :   :  :  :    :  :  : :     :  :  :   ::    :  :  :   ::  : |   
         |  :: ::  :  :   :   :  :: : :     :: :: ::  : :   :: :: ::  : : : |   
  150000 +-+:: :: :: :    :  :: : : : :     :: :: :: :  :  : : :: :: :  : : |   
         |  :: :: :: :    :  :: : : : :     :: :: :: :  :  : : :: :: :  : : |   
  100000 +-+:: :: : ::    :  : :: : :  :    :: :: :: :  :  : : :: :: :  : : |   
         | : :: : : ::    :  : :: ::   :   : :: :: : :  :  : :: :: : :  ::  |   
         | : :: : : ::    :  : :: ::   :   : :: :: : :  :  : :: :: : :  ::  |   
   50000 +-+  :  :: ::     : : ::  :   :   :  :  :  ::   : :  :  :  ::   :  |   
         | :  :  :  :      ::  :   :   :   :  :  :  :    ::   :  :  :    :  |   
         | :  :  :  :      ::  :   :   :   :  :  :  :    ::   :  :  :    :  |   
       0 O-+--OO-O--O----O--O--O---OO----O-O---O-O--------------------------+   
                                                                                
                                                                                
[*] bisect-good sample
[O] bisect-bad  sample



Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.


Thanks,
Rong Chen


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