Re: [linus:master] [vfs] 681ce86235: filebench.sum_operations/s -7.4% regression

[Yafang Shao]

On Wed, May 29, 2024 at 1:52 PM kernel test robot <oliver.sang@xxxxxxxxx> wrote:
>
>
> hi, Yafang Shao,
>
> we captured this filebench regression after this patch is merged into mailine.
>
> we noticed there is difference with original version in
> https://lore.kernel.org/all/20240515091727.22034-1-laoar.shao@xxxxxxxxx/
>
> but we confirmed there is similar regression by origial version. details as
> below [1] FYI.
>
>
>
> Hello,
>
> kernel test robot noticed a -7.4% regression of filebench.sum_operations/s on:
>
>
> commit: 681ce8623567ba7e7333908e9826b77145312dda ("vfs: Delete the associated dentry when deleting a file")
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
>
>
> [still regression on linus/master 2bfcfd584ff5ccc8bb7acde19b42570414bf880b]
>
>
> testcase: filebench
> test machine: 128 threads 2 sockets Intel(R) Xeon(R) Platinum 8358 CPU @ 2.60GHz (Ice Lake) with 128G memory
> parameters:
>
>         disk: 1HDD
>         fs: ext4
>         test: webproxy.f
>         cpufreq_governor: performance
>
>
>
>
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <oliver.sang@xxxxxxxxx>
> | Closes: https://lore.kernel.org/oe-lkp/202405291318.4dfbb352-oliver.sang@xxxxxxxxx
>
>
> Details are as below:
> -------------------------------------------------------------------------------------------------->
>
>
> The kernel config and materials to reproduce are available at:
> https://download.01.org/0day-ci/archive/20240529/202405291318.4dfbb352-oliver.sang@xxxxxxxxx
>
> =========================================================================================
> compiler/cpufreq_governor/disk/fs/kconfig/rootfs/tbox_group/test/testcase:
>   gcc-13/performance/1HDD/ext4/x86_64-rhel-8.3/debian-12-x86_64-20240206.cgz/lkp-icl-2sp6/webproxy.f/filebench
>
> commit:
>   29c73fc794 ("Merge tag 'perf-tools-for-v6.10-1-2024-05-21' of git://gitkernel.org/pub/scm/linux/kernel/git/perf/perf-tools")
>   681ce86235 ("vfs: Delete the associated dentry when deleting a file")
>
> 29c73fc794c83505 681ce8623567ba7e7333908e982
> ---------------- ---------------------------
>          %stddev     %change         %stddev
>              \          |                \
>   31537383 ą  2%     -75.1%    7846497 ą  4%  cpuidle..usage
>      27.21            +1.4%      27.59        iostat.cpu.system
>    3830823 ą  5%     -16.2%    3208825 ą  4%  numa-numastat.node1.local_node
>    3916065 ą  5%     -16.3%    3277633 ą  3%  numa-numastat.node1.numa_hit
>     455641           -74.2%     117514 ą  4%  vmstat.system.cs
>      90146           -34.9%      58712        vmstat.system.in
>       0.14            -0.0        0.12 ą  2%  mpstat.cpu.all.irq%
>       0.07            -0.0        0.04 ą  2%  mpstat.cpu.all.soft%
>       0.56            -0.2        0.36 ą  2%  mpstat.cpu.all.usr%
>       2038 ą  6%     -25.8%       1511 ą  3%  perf-c2c.DRAM.local
>      20304 ą 14%     -62.9%       7523 ą  2%  perf-c2c.DRAM.remote
>      18850 ą 16%     -71.0%       5470 ą  2%  perf-c2c.HITM.local
>      13220 ą 15%     -68.1%       4218 ą  3%  perf-c2c.HITM.remote
>      32070 ą 15%     -69.8%       9688 ą  2%  perf-c2c.HITM.total
>     191435 ą  7%     +37.3%     262935 ą 11%  sched_debug.cfs_rq:/.avg_vruntime.stddev
>     191435 ą  7%     +37.3%     262935 ą 11%  sched_debug.cfs_rq:/.min_vruntime.stddev
>     285707           -72.1%      79601 ą 11%  sched_debug.cpu.nr_switches.avg
>     344088 ą  2%     -69.8%     103953 ą  9%  sched_debug.cpu.nr_switches.max
>     206926 ą  8%     -73.0%      55912 ą 15%  sched_debug.cpu.nr_switches.min
>      26177 ą 10%     -63.9%       9453 ą 10%  sched_debug.cpu.nr_switches.stddev
>       5.00 ą  9%     +21.2%       6.06 ą  6%  sched_debug.cpu.nr_uninterruptible.stddev
>     497115 ą 40%     -44.8%     274644 ą 44%  numa-meminfo.node0.AnonPages
>    2037838 ą 26%     -78.4%     440153 ą 49%  numa-meminfo.node1.Active
>    2001934 ą 26%     -79.8%     405182 ą 52%  numa-meminfo.node1.Active(anon)
>     527723 ą 38%     +42.4%     751463 ą 16%  numa-meminfo.node1.AnonPages
>    3853109 ą 35%     -85.5%     559704 ą 33%  numa-meminfo.node1.FilePages
>      93331 ą 18%     -58.7%      38529 ą 22%  numa-meminfo.node1.Mapped
>    5189577 ą 27%     -61.5%    1999161 ą 13%  numa-meminfo.node1.MemUsed
>    2014284 ą 26%     -78.2%     439808 ą 51%  numa-meminfo.node1.Shmem
>     123485 ą 41%     -45.0%      67888 ą 44%  numa-vmstat.node0nr_anon_pages
>     500704 ą 26%     -79.8%     101309 ą 52%  numa-vmstat.node1nr_active_anon
>     131174 ą 38%     +42.6%     187092 ą 16%  numa-vmstat.node1nr_anon_pages
>     963502 ą 35%     -85.5%     139952 ą 33%  numa-vmstat.node1nr_file_pages
>      23724 ą 18%     -59.2%       9690 ą 22%  numa-vmstat.node1nr_mapped
>     503779 ą 26%     -78.2%     109954 ą 51%  numa-vmstat.node1nr_shmem
>     500704 ą 26%     -79.8%     101309 ą 52%  numa-vmstat.node1nr_zone_active_anon
>    3915420 ą  5%     -16.3%    3276906 ą  3%  numa-vmstat.node1numa_hit
>    3830177 ą  5%     -16.2%    3208097 ą  4%  numa-vmstat.node1numa_local
>    2431824           -65.5%     839190 ą  4%  meminfo.Active
>    2357128           -67.3%     770208 ą  4%  meminfo.Active(anon)
>      74695 ą  3%      -7.6%      68981 ą  2%  meminfo.Active(file)
>    5620559           -27.6%    4067556        meminfo.Cached
>    3838924           -40.4%    2286726        meminfo.Committed_AS
>      25660 ą 19%     +25.8%      32289 ą  5%  meminfo.Inactive(file)
>     141631 ą  5%     -32.4%      95728 ą  4%  meminfo.Mapped
>    8334057           -18.6%    6783406        meminfo.Memused
>    2390655           -64.9%     837973 ą  4%  meminfo.Shmem
>    9824314           -15.2%    8328190        meminfo.max_used_kB
>       1893            -7.4%       1752        filebench.sum_bytes_mb/s
>   45921381            -7.4%   42512980        filebench.sum_operations
>     765287            -7.4%     708444        filebench.sum_operations/s
>     201392            -7.4%     186432        filebench.sum_reads/s
>       0.04          +263.5%       0.14        filebench.sum_time_ms/op
>      40278            -7.4%      37286        filebench.sum_writes/s
>   48591837            -7.4%   44996528        filebench.time.file_system_outputs
>       6443 ą  3%     -88.7%     729.10 ą  4%  filebench.time.involuntary_context_switches
>       3556            +1.4%       3605        filebench.time.percent_of_cpu_this_job_got
>       5677            +2.1%       5798        filebench.time.system_time
>      99.20           -41.4%      58.09 ą  2%  filebench.time.user_time
>   37526666           -74.5%    9587296 ą  4%  filebench.time.voluntary_context_switches
>     589410           -67.3%     192526 ą  4%  proc-vmstat.nr_active_anon
>      18674 ą  3%      -7.6%      17253 ą  2%  proc-vmstat.nr_active_file
>    6075100            -7.4%    5625692        proc-vmstat.nr_dirtied
>    3065571            +1.3%    3104313        proc-vmstat.nr_dirty_background_threshold
>    6138638            +1.3%    6216217        proc-vmstat.nr_dirty_threshold
>    1407207           -27.6%    1019126        proc-vmstat.nr_file_pages
>   30829764            +1.3%   31217496        proc-vmstat.nr_free_pages
>     262267            +3.4%     271067        proc-vmstat.nr_inactive_anon
>       6406 ą 19%     +26.1%       8076 ą  5%  proc-vmstat.nr_inactive_file
>      35842 ą  5%     -32.2%      24284 ą  4%  proc-vmstat.nr_mapped
>     597809           -65.0%     209518 ą  4%  proc-vmstat.nr_shmem
>      32422            -3.3%      31365        proc-vmstat.nr_slab_reclaimable
>     589410           -67.3%     192526 ą  4%  proc-vmstat.nr_zone_active_anon
>      18674 ą  3%      -7.6%      17253 ą  2%  proc-vmstat.nr_zone_active_file
>     262267            +3.4%     271067        proc-vmstat.nr_zone_inactive_anon
>       6406 ą 19%     +26.1%       8076 ą  5%  proc-vmstat.nr_zone_inactive_file
>     100195 ą 10%     -54.0%      46112 ą 10%  proc-vmstat.numa_hint_faults
>      48654 ą  9%     -50.1%      24286 ą 13%  proc-vmstat.numa_hint_faults_local
>    7506558           -12.4%    6577262        proc-vmstat.numa_hit
>    7373151           -12.6%    6444638        proc-vmstat.numa_local
>     803560 ą  4%      -6.4%     752097 ą  5%  proc-vmstat.numa_pte_updates
>    4259084            -3.8%    4098506        proc-vmstat.pgactivate
>    7959837           -11.3%    7064279        proc-vmstat.pgalloc_normal
>     870736            -9.4%     789267        proc-vmstat.pgfault
>    7181295            -5.6%    6775640        proc-vmstat.pgfree
>       1.96 ą  2%     -36.9%       1.23        perf-stat.i.MPKI
>  3.723e+09           +69.5%  6.309e+09        perf-stat.i.branch-instructions
>       2.70            -0.0        2.66        perf-stat.i.branch-miss-rate%
>   16048312           -38.4%    9889213        perf-stat.i.branch-misses
>      16.44            -2.0       14.42        perf-stat.i.cache-miss-rate%
>   43146188           -47.3%   22744395 ą  2%  perf-stat.i.cache-misses
>  1.141e+08           -39.8%   68732731        perf-stat.i.cache-references
>     465903           -75.4%     114745 ą  4%  perf-stat.i.context-switches
>       4.11           -36.6%       2.61        perf-stat.i.cpi
>   1.22e+11            -5.2%  1.157e+11        perf-stat.i.cpu-cycles
>     236.15           -18.3%     192.90        perf-stat.i.cpu-migrations
>       1997 ą  2%     +40.1%       2798        perf-stat.i.cycles-between-cache-misses
>  1.644e+10           +90.3%   3.13e+10        perf-stat.i.instructions
>       0.38           +14.7%       0.43        perf-stat.i.ipc
>       3.63           -75.7%       0.88 ą  4%  perf-stat.i.metric.K/sec
>       4592 ą  2%     -11.6%       4057        perf-stat.i.minor-faults
>       4592 ą  2%     -11.6%       4057        perf-stat.i.page-faults
>       2.62           -72.3%       0.73 ą  2%  perf-stat.overall.MPKI
>       0.43            -0.3        0.16        perf-stat.overall.branch-miss-rate%
>      37.79            -4.6       33.22        perf-stat.overall.cache-miss-rate%
>       7.41           -50.1%       3.70        perf-stat.overall.cpi
>       2827           +80.1%       5092 ą  2%  perf-stat.overall.cycles-between-cache-misses
>       0.13          +100.5%       0.27        perf-stat.overall.ipc
>  3.693e+09           +77.2%  6.544e+09        perf-stat.ps.branch-instructions
>   15913729           -36.1%   10173711        perf-stat.ps.branch-misses
>   42783592           -44.9%   23577137 ą  2%  perf-stat.ps.cache-misses
>  1.132e+08           -37.3%   70963587        perf-stat.ps.cache-references
>     461953           -74.2%     118964 ą  4%  perf-stat.ps.context-switches
>     234.44           -17.3%     193.77        perf-stat.ps.cpu-migrations
>  1.632e+10           +99.0%  3.246e+10        perf-stat.ps.instructions
>       4555 ą  2%     -10.9%       4060        perf-stat.ps.minor-faults
>       4555 ą  2%     -10.9%       4060        perf-stat.ps.page-faults
>  2.659e+12           +99.2%  5.299e+12        perf-stat.total.instructions
>
>
>
> [1]
>
> for patch in
> https://lore.kernel.org/all/20240515091727.22034-1-laoar.shao@xxxxxxxxx/
>
> we apply it upon
>   3c999d1ae3 ("Merge tag 'wq-for-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq")
>
> there is similar regression
>
>
> =========================================================================================
> compiler/cpufreq_governor/disk/fs/kconfig/rootfs/tbox_group/test/testcase:
>   gcc-13/performance/1HDD/ext4/x86_64-rhel-8.3/debian-12-x86_64-20240206.cgz/lkp-icl-2sp6/webproxy.f/filebench
>
> commit:
>   3c999d1ae3 ("Merge tag 'wq-for-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq")
>   3681ce3644 ("vfs: Delete the associated dentry when deleting a file")
>
> 3c999d1ae3c75991 3681ce364442ce2ec7c7fbe90ad
> ---------------- ---------------------------
>          %stddev     %change         %stddev
>              \          |                \
>      31.06            +2.8%      31.94        boot-time.boot
>   30573542 ą  2%     -77.0%    7043084 ą  5%  cpuidle..usage
>      27.25            +1.3%      27.61        iostat.cpu.system
>       0.14            -0.0        0.12        mpstat.cpu.all.irq%
>       0.07            -0.0        0.04        mpstat.cpu.all.soft%
>       0.56            -0.2        0.34 ą  2%  mpstat.cpu.all.usr%
>       0.29 ą100%     -77.4%       0.07 ą 28%  vmstat.procs.b
>     448491 ą  2%     -76.3%     106251 ą  5%  vmstat.system.cs
>      90174           -36.5%      57279        vmstat.system.in
>    3460368 ą  4%     -10.3%    3103696 ą  4%  numa-numastat.node0.local_node
>    3522472 ą  4%      -9.2%    3197492 ą  3%  numa-numastat.node0.numa_hit
>    3928489 ą  4%     -17.7%    3232163 ą  3%  numa-numastat.node1.local_node
>    3998985 ą  3%     -18.2%    3270980 ą  3%  numa-numastat.node1.numa_hit
>       1968 ą  5%     -23.2%       1511        perf-c2c.DRAM.local
>      16452 ą 22%     -54.2%       7541 ą  4%  perf-c2c.DRAM.remote
>      14780 ą 26%     -64.0%       5321 ą  4%  perf-c2c.HITM.local
>      10689 ą 24%     -60.1%       4262 ą  5%  perf-c2c.HITM.remote
>      25469 ą 25%     -62.4%       9584 ą  4%  perf-c2c.HITM.total
>     196899 ą 10%     +31.1%     258125 ą 11%  sched_debug.cfs_rq:/.avg_vruntime.stddev
>     196899 ą 10%     +31.1%     258125 ą 11%  sched_debug.cfs_rq:/.min_vruntime.stddev
>     299051 ą 12%     -76.0%      71664 ą 15%  sched_debug.cpu.nr_switches.avg
>     355466 ą 11%     -73.4%      94490 ą 14%  sched_debug.cpu.nr_switches.max
>     219349 ą 12%     -76.6%      51435 ą 12%  sched_debug.cpu.nr_switches.min
>      25523 ą 11%     -67.4%       8322 ą 18%  sched_debug.cpu.nr_switches.stddev
>      36526 ą  4%     -16.4%      30519 ą  6%  numa-meminfo.node0.Active(file)
>     897165 ą 14%     -26.7%     657740 ą  9%  numa-meminfo.node0.AnonPages.max
>      23571 ą 10%     -14.5%      20159 ą 10%  numa-meminfo.node0.Dirty
>    2134726 ą 10%     -76.9%     493176 ą 35%  numa-meminfo.node1.Active
>    2096208 ą 11%     -78.3%     455673 ą 38%  numa-meminfo.node1.Active(anon)
>     965352 ą 13%     +23.5%    1192437 ą  2%  numa-meminfo.node1.AnonPages.max
>      18386 ą 17%     +23.8%      22761 ą  4%  numa-meminfo.node1.Inactive(file)
>    2108104 ą 11%     -76.7%     492042 ą 37%  numa-meminfo.node1.Shmem
>    2395006 ą  2%     -67.4%     779863 ą  3%  meminfo.Active
>    2319964 ą  2%     -69.3%     711848 ą  4%  meminfo.Active(anon)
>      75041 ą  2%      -9.4%      68015 ą  2%  meminfo.Active(file)
>    5583921           -28.3%    4002297        meminfo.Cached
>    3802632           -41.5%    2224370        meminfo.Committed_AS
>      28940 ą  5%     +13.6%      32890 ą  4%  meminfo.Inactive(file)
>     134576 ą  6%     -31.2%      92641 ą  3%  meminfo.Mapped
>    8310087           -19.2%    6718172        meminfo.Memused
>    2354275 ą  2%     -67.1%     775732 ą  4%  meminfo.Shmem
>    9807659           -15.7%    8271698        meminfo.max_used_kB
>       1903            -9.3%       1725        filebench.sum_bytes_mb/s
>   46168615            -9.4%   41846487        filebench.sum_operations
>     769403            -9.4%     697355        filebench.sum_operations/s
>     202475            -9.4%     183514        filebench.sum_reads/s
>       0.04          +268.3%       0.14        filebench.sum_time_ms/op
>      40495            -9.4%      36703        filebench.sum_writes/s
>   48846906            -9.3%   44298468        filebench.time.file_system_outputs
>       6633           -89.4%     701.33 ą  6%  filebench.time.involuntary_context_switches
>       3561            +1.3%       3607        filebench.time.percent_of_cpu_this_job_got
>       5686            +2.1%       5804        filebench.time.system_time
>      98.62           -44.2%      55.04 ą  2%  filebench.time.user_time
>   36939924 ą  2%     -76.6%    8653175 ą  5%  filebench.time.voluntary_context_switches
>       9134 ą  4%     -16.5%       7628 ą  6%  numa-vmstat.node0nr_active_file
>    3141362 ą  3%     -11.5%    2780445 ą  4%  numa-vmstat.node0nr_dirtied
>       9134 ą  4%     -16.5%       7628 ą  6%  numa-vmstat.node0nr_zone_active_file
>    3522377 ą  4%      -9.2%    3197360 ą  3%  numa-vmstat.node0numa_hit
>    3460272 ą  4%     -10.3%    3103565 ą  4%  numa-vmstat.node0numa_local
>     524285 ą 11%     -78.3%     113936 ą 38%  numa-vmstat.node1nr_active_anon
>       4630 ą 17%     +22.6%       5674 ą  4%  numa-vmstat.node1nr_inactive_file
>     527242 ą 11%     -76.7%     123018 ą 37%  numa-vmstat.node1nr_shmem
>     524285 ą 11%     -78.3%     113936 ą 38%  numa-vmstat.node1nr_zone_active_anon
>       4630 ą 17%     +22.5%       5674 ą  4%  numa-vmstat.node1nr_zone_inactive_file
>    3998675 ą  3%     -18.2%    3270307 ą  3%  numa-vmstat.node1numa_hit
>    3928179 ą  4%     -17.7%    3231491 ą  3%  numa-vmstat.node1numa_local
>       1.82 ą 18%      -0.5        1.28 ą 16%  perf-profile.calltrace.cycles-pp.mmap_region.do_mmap.vm_mmap_pgoff.ksys_mmap_pgoff.do_syscall_64
>       1.58 ą  8%      -0.5        1.13 ą 18%  perf-profile.calltrace.cycles-pp.ksys_mmap_pgoff.do_syscall_64.entry_SYSCALL_64_after_hwframe
>       1.53 ą  9%      -0.4        1.13 ą 18%  perf-profile.calltrace.cycles-pp.vm_mmap_pgoff.ksys_mmap_pgoff.do_syscall_64.entry_SYSCALL_64_after_hwframe
>       2.05 ą  7%      -0.3        1.76 ą 11%  perf-profile.calltrace.cycles-pp.update_sd_lb_stats.sched_balance_find_src_group.sched_balance_rq.sched_balance_newidle.balance_fair
>       3.80 ą  5%      -0.3        3.52 ą  5%  perf-profile.calltrace.cycles-pp.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
>       2.11 ą 11%      +0.3        2.39 ą  4%  perf-profile.calltrace.cycles-pp.sched_setaffinity.evlist_cpu_iterator__next.read_counters.process_interval.dispatch_events
>       3.55 ą 10%      +0.3        3.86 ą  4%  perf-profile.calltrace.cycles-pp.exc_page_fault.asm_exc_page_fault
>       2.63 ą  9%      +0.4        3.03 ą  6%  perf-profile.calltrace.cycles-pp.evlist_cpu_iterator__next.read_counters.process_interval.dispatch_events.cmd_stat
>       3.47 ą  2%      -0.6        2.86 ą 10%  perf-profile.children.cycles-pp.vm_mmap_pgoff
>       3.30 ą  2%      -0.6        2.73 ą 10%  perf-profile.children.cycles-pp.do_mmap
>       3.02 ą  6%      -0.6        2.46 ą 11%  perf-profile.children.cycles-pp.mmap_region
>       2.34 ą  8%      -0.6        1.80 ą 12%  perf-profile.children.cycles-pp.ksys_mmap_pgoff
>       3.80 ą  5%      -0.3        3.52 ą  5%  perf-profile.children.cycles-pp.smpboot_thread_fn
>       0.29 ą  2%      -0.1        0.17 ą 71%  perf-profile.children.cycles-pp.acpi_evaluate_dsm
>       0.29 ą  2%      -0.1        0.17 ą 71%  perf-profile.children.cycles-pp.acpi_evaluate_object
>       0.29 ą  2%      -0.1        0.17 ą 71%  perf-profile.children.cycles-pp.acpi_nfit_ctl
>       0.29 ą  2%      -0.1        0.17 ą 71%  perf-profile.children.cycles-pp.acpi_nfit_query_poison
>       0.29 ą  2%      -0.1        0.17 ą 71%  perf-profile.children.cycles-pp.acpi_nfit_scrub
>       0.16 ą 36%      -0.1        0.05 ą 44%  perf-profile.children.cycles-pp._find_first_bit
>       0.10 ą 44%      -0.1        0.03 ą100%  perf-profile.children.cycles-pp.mtree_load
>       0.30 ą 25%      +0.2        0.47 ą 13%  perf-profile.children.cycles-pp.__update_blocked_fair
>       0.23 ą 55%      -0.2        0.08 ą 70%  perf-profile.selfcycles-pp.malloc
>       0.16 ą 40%      -0.1        0.05 ą 44%  perf-profile.selfcycles-pp._find_first_bit
>       0.19 ą 30%      -0.1        0.09 ą 84%  perf-profile.selfcycles-pp.d_alloc_parallel
>       0.86 ą 17%      +0.3        1.12 ą 10%  perf-profile.selfcycles-pp.menu_select
>     580113 ą  2%     -69.3%     177978 ą  4%  proc-vmstat.nr_active_anon
>      18761 ą  2%      -9.3%      17008 ą  2%  proc-vmstat.nr_active_file
>    6107024            -9.3%    5538417        proc-vmstat.nr_dirtied
>    3066271            +1.3%    3105966        proc-vmstat.nr_dirty_background_threshold
>    6140041            +1.3%    6219526        proc-vmstat.nr_dirty_threshold
>    1398313           -28.3%    1002802        proc-vmstat.nr_file_pages
>   30835864            +1.3%   31234154        proc-vmstat.nr_free_pages
>     262597            +2.8%     269986        proc-vmstat.nr_inactive_anon
>       7233 ą  5%     +13.4%       8201 ą  4%  proc-vmstat.nr_inactive_file
>      34066 ą  6%     -31.1%      23487 ą  3%  proc-vmstat.nr_mapped
>     588705 ą  2%     -67.0%     193984 ą  4%  proc-vmstat.nr_shmem
>      32476            -3.6%      31292        proc-vmstat.nr_slab_reclaimable
>     580113 ą  2%     -69.3%     177978 ą  4%  proc-vmstat.nr_zone_active_anon
>      18761 ą  2%      -9.3%      17008 ą  2%  proc-vmstat.nr_zone_active_file
>     262597            +2.8%     269986        proc-vmstat.nr_zone_inactive_anon
>       7233 ą  5%     +13.4%       8201 ą  4%  proc-vmstat.nr_zone_inactive_file
>     148417 ą 19%     -82.3%      26235 ą 17%  proc-vmstat.numa_hint_faults
>      76831 ą 23%     -84.5%      11912 ą 33%  proc-vmstat.numa_hint_faults_local
>    7524741           -14.0%    6471471        proc-vmstat.numa_hit
>    7392150           -14.2%    6338859        proc-vmstat.numa_local
>     826291 ą  4%     -12.3%     724471 ą  4%  proc-vmstat.numa_pte_updates
>    4284054            -6.1%    4024194        proc-vmstat.pgactivate
>    7979760           -12.9%    6948927        proc-vmstat.pgalloc_normal
>     917223 ą  2%     -16.2%     768255        proc-vmstat.pgfault
>    7212208            -7.4%    6679624        proc-vmstat.pgfree
>       1.97           -39.5%       1.19 ą  2%  perf-stat.i.MPKI
>  3.749e+09           +65.2%  6.195e+09        perf-stat.i.branch-instructions
>       2.69            -0.0        2.65        perf-stat.i.branch-miss-rate%
>   15906654           -39.7%    9595633        perf-stat.i.branch-misses
>      16.53            -2.2       14.37        perf-stat.i.cache-miss-rate%
>   43138175           -48.8%   22080984 ą  2%  perf-stat.i.cache-misses
>  1.137e+08           -41.1%   67035007 ą  2%  perf-stat.i.cache-references
>     458704 ą  2%     -77.4%     103593 ą  6%  perf-stat.i.context-switches
>       4.04           -39.3%       2.45        perf-stat.i.cpi
>  1.221e+11            -5.4%  1.155e+11        perf-stat.i.cpu-cycles
>     238.75           -19.5%     192.29        perf-stat.i.cpu-migrations
>       1960           +45.0%       2843 ą  2%  perf-stat.i.cycles-between-cache-misses
>  1.678e+10          +103.7%  3.419e+10        perf-stat.i.instructions
>       0.39           +17.5%       0.46        perf-stat.i.ipc
>       3.58 ą  2%     -77.8%       0.80 ą  6%  perf-stat.i.metric.K/sec
>       4918 ą  3%     -19.9%       3940        perf-stat.i.minor-faults
>       4918 ą  3%     -19.9%       3940        perf-stat.i.page-faults
>       2.57           -74.9%       0.65 ą  2%  perf-stat.overall.MPKI
>       0.42            -0.3        0.15        perf-stat.overall.branch-miss-rate%
>      37.92            -4.8       33.07        perf-stat.overall.cache-miss-rate%
>       7.27           -53.5%       3.38        perf-stat.overall.cpi
>       2830           +85.1%       5239 ą  2%  perf-stat.overall.cycles-between-cache-misses
>       0.14          +115.0%       0.30        perf-stat.overall.ipc
>   3.72e+09           +72.8%  6.428e+09        perf-stat.ps.branch-instructions
>   15775403           -37.5%    9854215        perf-stat.ps.branch-misses
>   42773264           -46.5%   22897139 ą  2%  perf-stat.ps.cache-misses
>  1.128e+08           -38.6%   69221969 ą  2%  perf-stat.ps.cache-references
>     454754 ą  2%     -76.4%     107434 ą  6%  perf-stat.ps.context-switches
>     237.02           -18.5%     193.17        perf-stat.ps.cpu-migrations
>  1.666e+10          +113.0%  3.548e+10        perf-stat.ps.instructions
>       4878 ą  3%     -19.3%       3937        perf-stat.ps.minor-faults
>       4878 ą  3%     -19.3%       3937        perf-stat.ps.page-faults
>  2.715e+12          +113.5%  5.796e+12        perf-stat.total.instructions
>
>
> 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.
>
>
> --
> 0-DAY CI Kernel Test Service
> https://github.com/intel/lkp-tests/wiki
>

Thanks for your report. I will try to reproduce it on my test machine.

-- 
Regards
Yafang