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Message-ID: <1426666837.5570.36.camel@intel.com>
Date:	Wed, 18 Mar 2015 16:20:37 +0800
From:	Huang Ying <ying.huang@...el.com>
To:	Filipe Manana <fdmanana@...e.com>
Cc:	Chris Mason <clm@...com>, LKML <linux-kernel@...r.kernel.org>,
	LKP ML <lkp@...org>
Subject: [LKP] [Btrfs] 3a8b36f3780: -62.6% fileio.requests_per_sec

FYI, we noticed the below changes on

git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
commit 3a8b36f378060d20062a0918e99fae39ff077bf0 ("Btrfs: fix data loss in the fast fsync path")


testbox/testcase/testparams: lkp-sb02/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndwr-sync

f5c0a122800c301e  3a8b36f378060d20062a0918e9  
----------------  --------------------------  
         %stddev     %change         %stddev
             \          |                \  
     45.33 ±  0%     -62.6%      16.94 ±  0%  fileio.requests_per_sec
    138983 ±  0%     +15.1%     160000 ±  0%  fileio.time.voluntary_context_switches
     16035 ±  0%     +13.0%      18124 ±  0%  fileio.time.involuntary_context_switches
   2504328 ±  0%      -7.2%    2324488 ±  0%  fileio.time.file_system_outputs
      1.35 ±  1%      +2.8%       1.38 ±  0%  turbostat.CorWatt
      0.77 ±  6%     +34.6%       1.03 ±  3%  turbostat.Pkg%pc3
   7224199 ± 22%     -26.7%    5298697 ± 12%  cpuidle.C1-SNB.time
   8377756 ±  1%     +15.7%    9690687 ±  4%  cpuidle.C3-SNB.time
     16035 ±  0%     +13.0%      18124 ±  0%  time.involuntary_context_switches
    138983 ±  0%     +15.1%     160000 ±  0%  time.voluntary_context_switches
     45941 ±  0%     +11.0%      50983 ±  0%  softirqs.BLOCK
     35635 ±  2%     +13.7%      40524 ±  2%  softirqs.RCU
     26255 ±  1%     +10.5%      29017 ±  0%  softirqs.SCHED
     50650 ±  2%     +11.3%      56371 ±  0%  softirqs.TIMER
      3448 ±  0%      +1.6%       3503 ±  0%  vmstat.io.bo
      4010 ±  0%      +2.7%       4119 ±  0%  vmstat.system.cs
    294711 ±  1%     -17.1%     244365 ±  0%  meminfo.Active
    275793 ±  2%     -18.1%     225971 ±  0%  meminfo.Active(file)
     53614 ±  6%     +27.6%      68412 ± 15%  meminfo.DirectMap4k
      3781 ±  0%     -46.9%       2006 ±  0%  meminfo.Dirty
     47786 ±  0%     -14.7%      40780 ±  0%  meminfo.SReclaimable
     66047 ±  0%     -10.7%      58973 ±  0%  meminfo.Slab
     68947 ±  2%     -18.1%      56492 ±  0%  proc-vmstat.nr_active_file
    337110 ±  0%     -10.0%     303330 ±  0%  proc-vmstat.nr_dirtied
       944 ±  0%     -46.9%        501 ±  0%  proc-vmstat.nr_dirty
     11946 ±  0%     -14.7%      10195 ±  0%  proc-vmstat.nr_slab_reclaimable
    335424 ±  0%      -9.7%     302754 ±  0%  proc-vmstat.nr_written
     55839 ±  3%     -15.0%      47438 ±  0%  proc-vmstat.pgactivate
      1142 ±  5%     -16.2%        957 ± 17%  slabinfo.btrfs_delayed_ref_head.active_objs
      1146 ±  5%     -16.0%        962 ± 17%  slabinfo.btrfs_delayed_ref_head.num_objs
      1246 ±  6%     -29.4%        880 ± 15%  slabinfo.btrfs_delayed_tree_ref.active_objs
      1246 ±  6%     -29.4%        880 ± 15%  slabinfo.btrfs_delayed_tree_ref.num_objs
      2037 ±  2%     +60.0%       3260 ±  1%  slabinfo.btrfs_extent_buffer.num_objs
      2023 ±  2%     +60.7%       3250 ±  1%  slabinfo.btrfs_extent_buffer.active_objs
     13307 ±  0%     -57.7%       5634 ±  0%  slabinfo.btrfs_extent_state.num_objs
       260 ±  0%     -57.8%        110 ±  0%  slabinfo.btrfs_extent_state.num_slabs
     13292 ±  0%     -57.6%       5634 ±  0%  slabinfo.btrfs_extent_state.active_objs
       260 ±  0%     -57.8%        110 ±  0%  slabinfo.btrfs_extent_state.active_slabs
       713 ±  1%     -51.2%        348 ±  1%  slabinfo.btrfs_ordered_extent.active_objs
       718 ±  1%     -48.1%        373 ±  1%  slabinfo.btrfs_ordered_extent.num_objs
     26930 ±  0%     -57.1%      11557 ±  0%  slabinfo.btrfs_path.num_objs
       961 ±  0%     -57.1%        412 ±  0%  slabinfo.btrfs_path.active_slabs
       961 ±  0%     -57.1%        412 ±  0%  slabinfo.btrfs_path.num_slabs
     26930 ±  0%     -57.1%      11557 ±  0%  slabinfo.btrfs_path.active_objs
       789 ±  4%     -48.5%        406 ±  0%  slabinfo.ext4_extent_status.num_objs
       789 ±  4%     -48.5%        406 ±  0%  slabinfo.ext4_extent_status.active_objs
     26083 ±  0%     -28.3%      18697 ±  0%  slabinfo.radix_tree_node.num_objs
     26083 ±  0%     -28.3%      18697 ±  0%  slabinfo.radix_tree_node.active_objs
       931 ±  0%     -28.3%        667 ±  0%  slabinfo.radix_tree_node.active_slabs
       931 ±  0%     -28.3%        667 ±  0%  slabinfo.radix_tree_node.num_slabs
         4 ± 38%    +129.4%          9 ± 31%  sched_debug.cfs_rq[0]:/.runnable_load_avg
        17 ± 32%     -54.9%          8 ± 45%  sched_debug.cfs_rq[3]:/.runnable_load_avg
       385 ± 14%     -25.3%        287 ± 17%  sched_debug.cfs_rq[3]:/.load
     51947 ±  3%     +15.4%      59938 ±  3%  sched_debug.cpu#0.nr_load_updates
    200860 ±  5%     +11.6%     224079 ±  4%  sched_debug.cpu#1.ttwu_local
     47218 ±  2%      +7.4%      50701 ±  2%  sched_debug.cpu#1.nr_load_updates
         5 ± 37%    +105.0%         10 ± 26%  sched_debug.cpu#1.cpu_load[1]
    226755 ±  4%     +11.4%     252611 ±  4%  sched_debug.cpu#1.ttwu_count
      2500 ± 34%     -45.6%       1360 ± 33%  sched_debug.cpu#3.curr->pid
       385 ± 14%     -25.8%        285 ± 16%  sched_debug.cpu#3.load

testbox/testcase/testparams: bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync

f5c0a122800c301e  3a8b36f378060d20062a0918e9  
----------------  --------------------------  
     62.17 ±  0%     -64.6%      22.03 ±  0%  fileio.requests_per_sec
    712336 ±  0%     -64.2%     255005 ±  0%  fileio.time.file_system_inputs
    712336 ±  0%     -64.2%     255005 ±  0%  time.file_system_inputs
      0.73 ±  3%     -21.1%       0.58 ±  3%  time.user_time
     46562 ±  0%     +29.5%      60303 ±  1%  softirqs.RCU
     57662 ±  0%     +16.7%      67299 ±  0%  softirqs.SCHED
       259 ±  0%     -64.3%         92 ±  0%  vmstat.io.bi
      3638 ±  1%     -10.1%       3272 ±  2%  meminfo.Dirty
       432 ±  8%     -25.8%        320 ± 28%  proc-vmstat.allocstall
       253 ±  9%     -21.9%        197 ± 19%  proc-vmstat.compact_fail
       506 ±  8%     -17.8%        416 ± 14%  proc-vmstat.compact_stall
     11262 ±  3%     -20.1%       8996 ±  2%  proc-vmstat.kswapd_low_wmark_hit_quickly
       910 ±  1%     -10.5%        815 ±  0%  proc-vmstat.nr_dirty
     17652 ±  2%     -16.0%      14833 ±  3%  proc-vmstat.pageoutrun
     59446 ±  0%     -20.2%      47455 ±  0%  proc-vmstat.pgactivate
    169701 ±  0%     +11.5%     189186 ±  5%  proc-vmstat.pgmigrate_success
    355946 ±  0%     -64.2%     127593 ±  0%  proc-vmstat.pgpgin
     27402 ±  7%     -23.9%      20844 ± 29%  proc-vmstat.pgsteal_direct_dma32
      4868 ±  0%     -56.8%       2104 ±  1%  proc-vmstat.workingset_refault
      1624 ±  3%      -5.7%       1530 ±  1%  slabinfo.Acpi-ParseExt.active_objs
      1624 ±  3%      -5.7%       1530 ±  1%  slabinfo.Acpi-ParseExt.num_objs
      1009 ±  6%     -28.6%        720 ± 17%  slabinfo.btrfs_delayed_data_ref.active_objs
      1016 ±  6%     -28.5%        726 ± 16%  slabinfo.btrfs_delayed_data_ref.num_objs
       849 ±  0%     -10.3%        761 ±  4%  slabinfo.btrfs_delayed_ref_head.active_objs
       851 ±  0%      -9.9%        767 ±  4%  slabinfo.btrfs_delayed_ref_head.num_objs
     10883 ±  1%     -47.5%       5709 ±  4%  slabinfo.btrfs_extent_state.num_objs
       213 ±  1%     -47.6%        111 ±  4%  slabinfo.btrfs_extent_state.num_slabs
     10794 ±  1%     -48.6%       5551 ±  3%  slabinfo.btrfs_extent_state.active_objs
       213 ±  1%     -47.6%        111 ±  4%  slabinfo.btrfs_extent_state.active_slabs
      6596 ±  0%     -58.5%       2735 ±  1%  slabinfo.btrfs_path.num_objs
       235 ±  0%     -58.6%         97 ±  1%  slabinfo.btrfs_path.active_slabs
       235 ±  0%     -58.6%         97 ±  1%  slabinfo.btrfs_path.num_slabs
      6592 ±  0%     -58.6%       2731 ±  1%  slabinfo.btrfs_path.active_objs
      5055 ±  6%      -9.0%       4601 ±  2%  slabinfo.kmalloc-32.num_objs
      5055 ±  6%      -9.0%       4601 ±  2%  slabinfo.kmalloc-32.active_objs
      1512 ±  2%     -12.2%       1328 ±  5%  slabinfo.kmalloc-96.num_objs
      1512 ±  2%     -12.2%       1328 ±  5%  slabinfo.kmalloc-96.active_objs
       459 ±  2%     -16.8%        382 ±  6%  sched_debug.cfs_rq[0]:/.blocked_load_avg
       478 ±  1%     -15.6%        403 ±  5%  sched_debug.cfs_rq[0]:/.tg_load_contrib
        49 ±  7%      -9.1%         45 ± 11%  sched_debug.cfs_rq[3]:/.tg_runnable_contrib
      2337 ±  6%      -9.9%       2106 ± 11%  sched_debug.cfs_rq[3]:/.avg->runnable_avg_sum
     25079 ±  3%     -10.1%      22542 ±  4%  sched_debug.cfs_rq[3]:/.exec_clock
        28 ± 17%     -35.7%         18 ±  9%  sched_debug.cfs_rq[3]:/.nr_spread_over
    499222 ± 12%     -59.7%     201330 ± 40%  sched_debug.cpu#0.sched_goidle
   1018389 ± 12%     -58.2%     425747 ± 37%  sched_debug.cpu#0.nr_switches
     90529 ±  4%     -17.6%      74603 ±  8%  sched_debug.cpu#0.nr_load_updates
    513982 ± 13%     -56.9%     221386 ± 36%  sched_debug.cpu#0.ttwu_count
   1019018 ± 12%     -58.2%     426387 ± 37%  sched_debug.cpu#0.sched_count
       320 ±  3%     -14.3%        274 ± 13%  sched_debug.cpu#0.load
    323974 ± 21%    +131.6%     750473 ± 12%  sched_debug.cpu#1.sched_count
    323373 ± 21%    +131.9%     749837 ± 12%  sched_debug.cpu#1.nr_switches
     89555 ± 46%    +230.0%     295518 ± 16%  sched_debug.cpu#1.ttwu_local
        13 ± 30%     +59.0%         20 ±  8%  sched_debug.cpu#1.cpu_load[2]
         8 ± 41%    +111.8%         18 ± 12%  sched_debug.cpu#1.cpu_load[4]
     68535 ±  4%     +22.2%      83732 ±  1%  sched_debug.cpu#1.nr_load_updates
        10 ± 33%     +84.1%         19 ±  9%  sched_debug.cpu#1.cpu_load[3]
    160382 ± 16%    +122.7%     357238 ± 12%  sched_debug.cpu#1.ttwu_count
    151508 ± 22%    +140.8%     364820 ± 12%  sched_debug.cpu#1.sched_goidle
    388481 ±  2%     -42.8%     222376 ± 46%  sched_debug.cpu#2.ttwu_local
     87970 ±  3%      -6.8%      81971 ±  6%  sched_debug.cpu#2.nr_load_updates
    452753 ±  3%     -37.3%     283785 ± 36%  sched_debug.cpu#2.ttwu_count
    916511 ±  5%     -36.7%     580526 ± 36%  sched_debug.cpu#2.nr_switches
    917118 ±  5%     -36.6%     581168 ± 36%  sched_debug.cpu#2.sched_count
    448592 ±  5%     -37.9%     278755 ± 38%  sched_debug.cpu#2.sched_goidle
    140376 ±  7%    +179.3%     392097 ± 28%  sched_debug.cpu#3.sched_goidle
     68344 ±  2%     +24.1%      84790 ±  8%  sched_debug.cpu#3.nr_load_updates
     78592 ± 33%    +335.3%     342125 ± 33%  sched_debug.cpu#3.ttwu_local
    300663 ±  7%    +168.1%     806077 ± 27%  sched_debug.cpu#3.sched_count
    149690 ± 12%    +182.2%     422447 ± 26%  sched_debug.cpu#3.ttwu_count
    300054 ±  7%    +168.5%     805498 ± 27%  sched_debug.cpu#3.nr_switches

testbox/testcase/testparams: bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndwr-sync

f5c0a122800c301e  3a8b36f378060d20062a0918e9  
----------------  --------------------------  
      1.32 ±  6%   +8834.3%     117.71 ±171%  fileio.request_latency_max_ms
     44.70 ±  0%     -56.7%      19.35 ±  0%  fileio.requests_per_sec
    156010 ±  0%     +38.4%     215846 ±  0%  fileio.time.voluntary_context_switches
   2663864 ±  0%      -6.2%    2499112 ±  0%  fileio.time.file_system_outputs
    156010 ±  0%     +38.4%     215846 ±  0%  time.voluntary_context_switches
     39761 ±  1%     +22.5%      48712 ±  2%  softirqs.RCU
     37048 ±  1%     +17.1%      43380 ±  2%  softirqs.SCHED
     52147 ±  1%     +15.3%      60140 ±  1%  softirqs.TIMER
      2142 ±  0%      +4.6%       2239 ±  0%  vmstat.system.in
      4067 ±  0%      +5.9%       4307 ±  0%  vmstat.system.cs
    315172 ±  0%     -13.9%     271267 ±  0%  meminfo.Active
    296097 ±  0%     -14.5%     253063 ±  0%  meminfo.Active(file)
      3678 ±  0%     -42.1%       2131 ±  1%  meminfo.Dirty
     47204 ±  0%     -14.5%      40351 ±  0%  meminfo.SReclaimable
     64571 ±  0%     -10.7%      57634 ±  0%  meminfo.Slab
     74024 ±  0%     -14.5%      63263 ±  0%  proc-vmstat.nr_active_file
       919 ±  0%     -42.1%        532 ±  1%  proc-vmstat.nr_dirty
     11801 ±  0%     -14.5%      10087 ±  0%  proc-vmstat.nr_slab_reclaimable
     59906 ±  0%     -25.1%      44895 ±  0%  proc-vmstat.pgactivate
      1971 ±  5%      -8.0%       1814 ±  3%  slabinfo.anon_vma.active_objs
      1971 ±  5%      -8.0%       1814 ±  3%  slabinfo.anon_vma.num_objs
      1759 ±  7%     -17.1%       1457 ±  5%  slabinfo.btrfs_delayed_data_ref.active_objs
      1768 ±  7%     -17.2%       1464 ±  5%  slabinfo.btrfs_delayed_data_ref.num_objs
      1081 ± 15%     -41.9%        628 ± 11%  slabinfo.btrfs_delayed_tree_ref.active_objs
      1082 ± 15%     -41.9%        628 ± 11%  slabinfo.btrfs_delayed_tree_ref.num_objs
      2313 ±  1%     -21.9%       1805 ±  0%  slabinfo.btrfs_extent_buffer.num_objs
      2301 ±  1%     -22.1%       1792 ±  0%  slabinfo.btrfs_extent_buffer.active_objs
     13162 ±  0%     -51.8%       6341 ±  0%  slabinfo.btrfs_extent_state.num_objs
       257 ±  0%     -51.9%        123 ±  0%  slabinfo.btrfs_extent_state.num_slabs
     13152 ±  0%     -51.8%       6341 ±  0%  slabinfo.btrfs_extent_state.active_objs
       257 ±  0%     -51.9%        123 ±  0%  slabinfo.btrfs_extent_state.active_slabs
       715 ±  0%     -46.2%        385 ±  5%  slabinfo.btrfs_ordered_extent.active_objs
       720 ±  0%     -43.4%        408 ±  5%  slabinfo.btrfs_ordered_extent.num_objs
     26591 ±  0%     -51.4%      12924 ±  0%  slabinfo.btrfs_path.num_objs
       949 ±  0%     -51.4%        461 ±  0%  slabinfo.btrfs_path.active_slabs
       949 ±  0%     -51.4%        461 ±  0%  slabinfo.btrfs_path.num_slabs
     26591 ±  0%     -51.4%      12924 ±  0%  slabinfo.btrfs_path.active_objs
       670 ±  8%     -39.2%        407 ±  0%  slabinfo.ext4_extent_status.num_objs
       670 ±  8%     -39.2%        407 ±  0%  slabinfo.ext4_extent_status.active_objs
       503 ±  6%     -13.2%        437 ±  8%  slabinfo.mnt_cache.active_objs
       522 ±  7%     -13.4%        452 ±  6%  slabinfo.mnt_cache.num_objs
     26243 ±  0%     -26.8%      19212 ±  0%  slabinfo.radix_tree_node.num_objs
     26243 ±  0%     -26.8%      19212 ±  0%  slabinfo.radix_tree_node.active_objs
       937 ±  0%     -26.8%        685 ±  0%  slabinfo.radix_tree_node.active_slabs
       937 ±  0%     -26.8%        685 ±  0%  slabinfo.radix_tree_node.num_slabs

lkp-sb02: Sandy Bridge-EP
Memory: 4G

bay: Pentium D
Memory: 2G




                             fileio.requests_per_sec

  50 ++---------------------------------------------------------------------+
     |                                                                      |
  45 *+.*..*...*..*..*..*...*..*..*..*...*..*..*..*..*...*..*..*..*...*..*..*
  40 ++                                                                     |
     |                                                                      |
  35 ++                                                                     |
     |                                                                      |
  30 ++                                                                     |
     |                                                                      |
  25 ++                                                                     |
  20 ++                                                                     |
     O         O        O   O     O                                         |
  15 ++ O  O      O            O     O   O  O  O  O  O   O  O  O            |
     |                                                                      |
  10 ++--------------O------------------------------------------------------+


                            fileio.time.file_system_outputs

  2.6e+06 ++----------------------------------------------------------------+
  2.5e+06 *+.*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*
          |                                                                 |
  2.4e+06 O+ O  O  O        O  O           O     O           O  O           |
  2.3e+06 ++          O           O  O  O     O     O  O  O                 |
  2.2e+06 ++                                                                |
  2.1e+06 ++                                                                |
          |                                                                 |
    2e+06 ++                                                                |
  1.9e+06 ++                                                                |
  1.8e+06 ++                                                                |
  1.7e+06 ++                                                                |
          |                                                                 |
  1.6e+06 ++             O                                                  |
  1.5e+06 ++----------------------------------------------------------------+


                             proc-vmstat.nr_active_file

  75000 ++------------------------------------------------------------------+
        |                                                                   |
  70000 ++                                                              .*..|
        *..*..*..*..*..*...*..*..*..*..*..*..*..  .*..  .*...*..*..*..*.    *
        |                                       *.    *.                    |
  65000 ++                                                                  |
        |                                                                   |
  60000 ++                                                                  |
        |                              O              O                     |
  55000 O+ O  O  O  O      O  O  O  O     O  O  O  O     O   O  O           |
        |                                                                   |
        |                                                                   |
  50000 ++             O                                                    |
        |                                                                   |
  45000 ++------------------------------------------------------------------+


                               proc-vmstat.nr_dirty

  1000 ++-------------------------------------------------------------------+
       *..*..*..*...*..*..*..*..*..*..*...  .*..  .*..  .*..*..*...*..*..*..*
   900 ++                                 *.    *.    *.                    |
       |                                                                    |
   800 ++                                                                   |
       |                                                                    |
   700 ++                                                                   |
       |                                                                    |
   600 ++                                                                   |
       |                                                                    |
   500 O+ O  O  O   O     O  O  O  O  O   O  O  O  O  O  O  O  O            |
       |                                                                    |
   400 ++              O                                                    |
       |                                                                    |
   300 ++-------------------------------------------------------------------+


                           proc-vmstat.nr_slab_reclaimable

  12000 ++--------------------------*--*-----*-----*-----*---*-----*--*-----*
        |                         ..      *.     ..    ..       *.       *. |
        *..*..*..*..*..*...*..*..*              *     *                     |
  11500 ++                                                                  |
        |                                                                   |
        |                                                                   |
  11000 ++                                                                  |
        |                                                                   |
  10500 ++                                                                  |
        |                                                                   |
        |                                 O  O  O  O  O  O   O  O           |
  10000 ++    O               O                                             |
        O  O     O  O      O     O  O  O                                    |
        |                                                                   |
   9500 ++-------------O----------------------------------------------------+


                               proc-vmstat.nr_dirtied

  340000 *+-*--*--*--*--*--*--*--*--*--*---*--*--*--*--*--*--*--*--*--*--*--*
         |                                                                  |
  320000 ++                                                                 |
         |                 O                                                |
  300000 O+ O  O  O  O        O  O  O  O   O  O  O  O  O  O  O  O           |
         |                                                                  |
  280000 ++                                                                 |
         |                                                                  |
  260000 ++                                                                 |
         |                                                                  |
  240000 ++                                                                 |
         |                                                                  |
  220000 ++                                                                 |
         |                                                                  |
  200000 ++-------------O---------------------------------------------------+


                               proc-vmstat.nr_written

  340000 ++-*-----*--------*------------------*--*--*--*-----*--*--*--*-----*
         *.    *.    *..*.    *..*..*..*...*.             *.             *. |
  320000 ++                                                                 |
         |                                                                  |
  300000 O+ O  O  O  O     O  O  O  O  O   O  O  O  O  O  O  O  O           |
         |                                                                  |
  280000 ++                                                                 |
         |                                                                  |
  260000 ++                                                                 |
         |                                                                  |
  240000 ++                                                                 |
         |                                                                  |
  220000 ++                                                                 |
         |                                                                  |
  200000 ++-------------O---------------------------------------------------+


                               proc-vmstat.pgactivate

  60000 ++---------------------------------------------------------------*--+
        |                                                              ..   |
  55000 *+.*..*..*..*..*...*..*..*..*..*..*..*..*..*..*..*...*..*..*..*     *
        |                                                                   |
  50000 ++                                                                  |
        O  O  O  O  O         O  O  O  O  O  O  O  O  O  O   O  O           |
  45000 ++                 O                                                |
        |                                                                   |
  40000 ++                                                                  |
        |                                                                   |
  35000 ++                                                                  |
        |                                                                   |
  30000 ++             O                                                    |
        |                                                                   |
  25000 ++------------------------------------------------------------------+


                                   meminfo.Active

  310000 ++-----------------------------------------------------------------+
  300000 ++                                                              *..|
         | .*..*..*..*..              .*...  .*..         *..          ..   *
  290000 *+             *..*..*..*..*.     *.      .*.. ..   *..*..*..*     |
  280000 ++                                      *.    *                    |
         |                                                                  |
  270000 ++                                                                 |
  260000 ++                                                                 |
  250000 ++                                                                 |
         O  O  O  O  O        O  O  O  O   O  O  O  O  O  O  O  O           |
  240000 ++                O                                                |
  230000 ++                                                                 |
         |                                                                  |
  220000 ++             O                                                   |
  210000 ++-----------------------------------------------------------------+


                                meminfo.Active(file)

  290000 ++-----------------------------------------------------------------+
  280000 ++                                                              *..|
         | .*..*..*..*..*..*..*..*..*..*...  .*..         *..*..       ..   *
  270000 *+                                *.    *..*.. ..      *..*..*     |
  260000 ++                                            *                    |
         |                                                                  |
  250000 ++                                                                 |
  240000 ++                                                                 |
  230000 ++                                                                 |
         O  O  O  O  O        O  O  O  O   O  O  O  O  O  O  O  O           |
  220000 ++                O                                                |
  210000 ++                                                                 |
         |                                                                  |
  200000 ++             O                                                   |
  190000 ++-----------------------------------------------------------------+


                                   meminfo.Dirty

  4000 ++-------------------------------------------------------------------+
       *..*..*..*...*..*..*..*..*..*..*...  .*..        .*..*..*...*..*..*..*
       |                                  *.    *..*..*.                    |
  3500 ++                                                                   |
       |                                                                    |
       |                                                                    |
  3000 ++                                                                   |
       |                                                                    |
  2500 ++                                                                   |
       |                                                                    |
       |                                                                    |
  2000 O+ O  O  O   O     O  O  O  O  O   O  O  O  O  O  O  O  O            |
       |                                                                    |
       |                                                                    |
  1500 ++--------------O----------------------------------------------------+


                                    meminfo.Slab

  67000 ++------------------------------------------------------------------+
  66000 ++                          *..*..  .*..   *..     ..*..  .*..  .*..*
        |                         ..      *.     ..     .*.     *.    *.    |
  65000 *+.*..*..*..*..*...*..*..*              *     *.                    |
  64000 ++                                                                  |
  63000 ++                                                                  |
  62000 ++                                                                  |
        |                                                                   |
  61000 ++                                                                  |
  60000 ++                                                                  |
  59000 ++                       O        O  O  O  O  O  O   O  O           |
  58000 ++ O  O               O        O                                    |
        O        O  O      O        O                                       |
  57000 ++             O                                                    |
  56000 ++------------------------------------------------------------------+


                                meminfo.SReclaimable

  48000 ++--------------------------*--*-----*-----*-----*---*-----*--*-----*
  47000 ++                        ..      *.     ..    ..       *.       *. |
        *..*..*..*..*..*...*..*..*              *     *                     |
  46000 ++                                                                  |
  45000 ++                                                                  |
        |                                                                   |
  44000 ++                                                                  |
  43000 ++                                                                  |
  42000 ++                                                                  |
        |                                                                   |
  41000 ++                                O  O  O  O  O  O   O  O           |
  40000 ++    O               O                                             |
        O  O     O  O      O     O  O  O                                    |
  39000 ++                                                                  |
  38000 ++-------------O----------------------------------------------------+


	[*] bisect-good sample
	[O] bisect-bad  sample

To reproduce:

	apt-get install ruby
	git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
	cd lkp-tests
	bin/setup-local job.yaml # the job file attached in this email
	bin/run-local   job.yaml


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,
Ying Huang


View attachment "job.yaml" of type "text/plain" (1831 bytes)

View attachment "reproduce" of type "text/plain" (37304 bytes)

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