FYI, we noticed the below changes on

=========================================================================================
tbox_group/testcase/rootfs/kconfig/compiler/cpufreq_governor/iterations/nr_threads/disk/fs/fs2/filesize/test_size/sync_method/nr_directories/nr_files_per_directory:
  
lkp-ne04/fsmark/debian-x86_64-2015-02-07.cgz/x86_64-rhel/gcc-4.9/performance/1x/32t/1HDD/xfs/nfsv4/5K/400M/fsyncBeforeClose/16d/256fpd

commit: 
  cd2d35ff27c4fda9ba73b0aa84313e8e20ce4d2c
  4aac1bf05b053a201a4b392dd9a684fb2b7e6103

cd2d35ff27c4fda9 4aac1bf05b053a201a4b392dd9 
---------------- -------------------------- 
         %stddev     %change         %stddev
             \          |                \  
  14415356 ±  0%      +2.6%   14788625 ±  1%  fsmark.app_overhead
    441.60 ±  0%      -2.9%     428.80 ±  0%  fsmark.files_per_sec
    185.78 ±  0%      +2.9%     191.26 ±  0%  fsmark.time.elapsed_time
    185.78 ±  0%      +2.9%     191.26 ±  0%  fsmark.time.elapsed_time.max
     97472 ±  0%      -2.8%      94713 ±  0%  
fsmark.time.involuntary_context_switches
   3077117 ± 95%    +251.2%   10805440 ±112%  
latency_stats.sum.nfs_wait_on_request.nfs_updatepage.nfs_write_end.generic_perform_write.__generic_file_write_iter.generic_file_write_iter.nfs_file_write.__vfs_write.vfs_write.SyS_write.entry_SYSCALL_64_fastpath
     12999 ±  0%     +32.9%      17276 ±  0%  proc-vmstat.nr_slab_unreclaimable
     64568 ±  4%     -14.8%      55032 ±  0%  softirqs.RCU
     51999 ±  0%     +32.9%      69111 ±  0%  meminfo.SUnreclaim
    159615 ±  0%     +13.5%     181115 ±  0%  meminfo.Slab
      3.75 ±  0%      +3.3%       3.88 ±  1%  turbostat.%Busy
     77.25 ±  0%      +6.5%      82.25 ±  0%  turbostat.Avg_MHz
  30813025 ±  2%     -14.5%   26338527 ±  9%  cpuidle.C1E-NHM.time
    164180 ±  0%     -28.9%     116758 ±  7%  cpuidle.C1E-NHM.usage
      1738 ±  2%     -81.2%     326.75 ±  4%  cpuidle.POLL.usage
     29979 ±  2%     +44.3%      43273 ±  4%  numa-meminfo.node0.SUnreclaim
     94889 ±  0%     +19.8%     113668 ±  2%  numa-meminfo.node0.Slab
     22033 ±  3%     +17.3%      25835 ±  7%  numa-meminfo.node1.SUnreclaim
      7404 ±  1%      -2.7%       7206 ±  0%  vmstat.io.bo
     27121 ±  0%      -4.8%      25817 ±  0%  vmstat.system.cs
      3025 ±  0%     -13.5%       2615 ±  0%  vmstat.system.in
     50126 ±  1%     +11.5%      55893 ±  1%  numa-vmstat.node0.nr_dirtied
      7494 ±  2%     +44.3%      10818 ±  4%  
numa-vmstat.node0.nr_slab_unreclaimable
     50088 ±  1%     +11.6%      55900 ±  1%  numa-vmstat.node0.nr_written
      5507 ±  3%     +17.3%       6458 ±  7%  
numa-vmstat.node1.nr_slab_unreclaimable
      7164 ±  2%    +275.2%      26885 ±  0%  slabinfo.kmalloc-16.active_objs
      7164 ±  2%    +275.3%      26885 ±  0%  slabinfo.kmalloc-16.num_objs
      7367 ±  1%    +787.7%      65401 ±  0%  slabinfo.kmalloc-192.active_objs
    179.00 ±  1%    +771.8%       1560 ±  0%  slabinfo.kmalloc-192.active_slabs
      7537 ±  1%    +770.0%      65572 ±  0%  slabinfo.kmalloc-192.num_objs
    179.00 ±  1%    +771.8%       1560 ±  0%  slabinfo.kmalloc-192.num_slabs
      3631 ±  7%    +522.3%      22600 ±  0%  slabinfo.kmalloc-256.active_objs
    145.50 ±  4%    +398.1%     724.75 ±  0%  slabinfo.kmalloc-256.active_slabs
      4667 ±  4%    +397.3%      23210 ±  0%  slabinfo.kmalloc-256.num_objs
    145.50 ±  4%    +398.1%     724.75 ±  0%  slabinfo.kmalloc-256.num_slabs
     17448 ±  2%     +75.6%      30643 ±  0%  slabinfo.kmalloc-32.active_objs
    137.50 ±  2%     +76.5%     242.75 ±  0%  slabinfo.kmalloc-32.active_slabs
     17651 ±  2%     +76.4%      31139 ±  0%  slabinfo.kmalloc-32.num_objs
    137.50 ±  2%     +76.5%     242.75 ±  0%  slabinfo.kmalloc-32.num_slabs
      2387 ±  3%     -10.7%       2132 ±  8%  slabinfo.kmalloc-512.active_objs
    491.25 ±  3%     +33.9%     658.00 ± 11%  slabinfo.numa_policy.active_objs
    491.25 ±  3%     +33.9%     658.00 ± 11%  slabinfo.numa_policy.num_objs
      2128 ±  9%     +59.3%       3391 ± 34%  
sched_debug.cfs_rq[10]:/.exec_clock
     18088 ± 17%     +47.0%      26582 ± 29%  
sched_debug.cfs_rq[10]:/.min_vruntime
      4326 ± 11%     -22.2%       3368 ± 18%  sched_debug.cfs_rq[5]:/.exec_clock
      1459 ±  1%     -10.8%       1302 ±  3%  
sched_debug.cpu#0.nr_uninterruptible
    122217 ±  7%     -18.6%      99447 ±  2%  sched_debug.cpu#1.nr_switches
    122732 ±  8%     -18.5%      99972 ±  2%  sched_debug.cpu#1.sched_count
     45603 ± 10%     -20.1%      36442 ±  2%  sched_debug.cpu#1.sched_goidle
     27004 ±  3%     -18.9%      21895 ±  5%  sched_debug.cpu#1.ttwu_local
     15469 ±  5%     +17.2%      18132 ±  6%  sched_debug.cpu#10.nr_load_updates
     78564 ±  8%     +26.6%      99492 ±  5%  sched_debug.cpu#10.nr_switches
     78605 ±  8%     +26.7%      99557 ±  4%  sched_debug.cpu#10.sched_count
     27470 ±  9%     +24.7%      34268 ±  7%  sched_debug.cpu#10.sched_goidle
     38215 ±  1%     +37.4%      52499 ± 13%  sched_debug.cpu#10.ttwu_count
     14816 ±  5%     +22.8%      18196 ±  2%  sched_debug.cpu#10.ttwu_local
     19690 ± 21%     -29.9%      13802 ± 15%  sched_debug.cpu#11.nr_switches
     54.25 ±  2%     -47.5%      28.50 ± 25%  
sched_debug.cpu#11.nr_uninterruptible
     19721 ± 21%     -29.9%      13828 ± 15%  sched_debug.cpu#11.sched_count
     14545 ±  2%     +15.4%      16779 ±  4%  sched_debug.cpu#12.nr_load_updates
     72087 ± 11%     +27.9%      92204 ±  7%  sched_debug.cpu#12.nr_switches
     72126 ± 11%     +28.1%      92422 ±  7%  sched_debug.cpu#12.sched_count
     25418 ± 13%     +24.4%      31626 ±  7%  sched_debug.cpu#12.sched_goidle
     33399 ± 15%     +38.5%      46255 ± 13%  sched_debug.cpu#12.ttwu_count
     51.25 ± 10%     -39.0%      31.25 ± 21%  
sched_debug.cpu#13.nr_uninterruptible
      2593 ± 11%     -21.8%       2028 ± 10%  sched_debug.cpu#13.ttwu_local
     71266 ±  3%     +20.1%      85620 ±  5%  sched_debug.cpu#14.nr_switches
     71306 ±  3%     +20.4%      85827 ±  5%  sched_debug.cpu#14.sched_count
     24634 ±  3%     +18.8%      29259 ±  4%  sched_debug.cpu#14.sched_goidle
     34625 ± 11%     +19.9%      41506 ± 11%  sched_debug.cpu#14.ttwu_count
     13866 ±  3%     +20.6%      16726 ±  5%  sched_debug.cpu#14.ttwu_local
     12683 ±  4%     -14.7%      10817 ±  2%  sched_debug.cpu#15.nr_load_updates
     49.75 ±  6%     -46.2%      26.75 ± 28%  
sched_debug.cpu#15.nr_uninterruptible
      3374 ± 12%     -28.1%       2427 ± 18%  sched_debug.cpu#15.ttwu_local
    186563 ±  5%     -12.1%     163975 ±  4%  sched_debug.cpu#2.nr_switches
     -1324 ± -2%     -16.0%      -1111 ± -1%  
sched_debug.cpu#2.nr_uninterruptible
    187499 ±  5%     -11.2%     166447 ±  4%  sched_debug.cpu#2.sched_count
     67465 ±  7%     -13.6%      58308 ±  6%  sched_debug.cpu#2.sched_goidle
     36525 ±  4%     -14.6%      31193 ±  1%  sched_debug.cpu#2.ttwu_local
     23697 ±  5%     -13.2%      20572 ±  9%  sched_debug.cpu#3.nr_load_updates
    128070 ±  1%     -22.9%      98687 ±  5%  sched_debug.cpu#3.nr_switches
    129859 ±  2%     -23.5%      99357 ±  4%  sched_debug.cpu#3.sched_count
     48833 ±  1%     -23.7%      37243 ±  6%  sched_debug.cpu#3.sched_goidle
     61622 ±  3%     -24.2%      46694 ±  5%  sched_debug.cpu#3.ttwu_count
     27510 ±  7%     -20.6%      21840 ±  8%  sched_debug.cpu#3.ttwu_local
     81675 ±  7%     -13.6%      70536 ±  1%  sched_debug.cpu#4.ttwu_count
     34076 ±  3%     -12.9%      29683 ±  1%  sched_debug.cpu#4.ttwu_local
    124470 ±  4%     -14.1%     106865 ±  8%  sched_debug.cpu#5.sched_count
     62502 ±  3%     -20.8%      49519 ±  9%  sched_debug.cpu#5.ttwu_count
     26562 ±  0%     -17.7%      21853 ± 10%  sched_debug.cpu#5.ttwu_local
    181661 ± 10%     -15.1%     154229 ±  6%  sched_debug.cpu#6.nr_switches
    181937 ± 10%     -13.5%     157379 ±  6%  sched_debug.cpu#6.sched_count
     66672 ± 14%     -16.6%      55632 ±  9%  sched_debug.cpu#6.sched_goidle
     78296 ±  2%     -10.2%      70346 ±  6%  sched_debug.cpu#6.ttwu_count
     33536 ±  1%     -14.4%      28696 ±  1%  sched_debug.cpu#6.ttwu_local
    131463 ±  6%     -17.0%     109140 ±  4%  sched_debug.cpu#7.nr_switches
    -32.25 ±-58%    -100.8%       0.25 ±9467%  
sched_debug.cpu#7.nr_uninterruptible
    133606 ±  7%     -17.2%     110671 ±  4%  sched_debug.cpu#7.sched_count
     50986 ±  7%     -16.6%      42525 ±  6%  sched_debug.cpu#7.sched_goidle
     61388 ±  2%     -19.8%      49213 ±  5%  sched_debug.cpu#7.ttwu_count
     26637 ±  2%     -21.8%      20837 ±  3%  sched_debug.cpu#7.ttwu_local
     12312 ±  3%      +9.4%      13474 ±  4%  sched_debug.cpu#8.nr_load_updates
     53.50 ±  6%     -44.9%      29.50 ± 27%  
sched_debug.cpu#9.nr_uninterruptible
      2724 ± 15%     -23.7%       2078 ± 26%  sched_debug.cpu#9.ttwu_local


lkp-ne04: Nehalem-EP
Memory: 12G




                                cpuidle.POLL.usage

  1800 ++----------*-----------------------------*-----*-----*--------*--*--+
       *..*..*..*.      .*..*..*..*..*..*..*..*.    *.    *.    *..*.       *
  1600 ++             *.                                                    |
  1400 ++                                                                   |
       |                                                                    |
  1200 ++                                                                   |
       |                                                                    |
  1000 ++                                                                   |
       |                                                                    |
   800 ++                                                                   |
   600 ++                                                                   |
       |                                                                    |
   400 O+                                                                   |
       |  O  O  O  O  O  O  O  O  O  O  O  O  O  O  O  O  O  O  O  O  O  O  |
   200 ++-------------------------------------------------------------------+


                                cpuidle.C1E-NHM.usage

  190000 ++-----------------------------------------------------*-----------+
         |                                                     : :          |
  180000 ++                                                    :  :         |
  170000 ++                                               .*. :   :         |
         | .*..  .*..  .*.        .*..        .*..*..*..*.   *     *..*..*..*
  160000 *+    *.    *.   *..*..*.    *..*..*.                              |
  150000 ++                                                                 |
         |                                                                  |
  140000 ++                                                                 |
  130000 ++                                                              O  |
         |                                                                  |
  120000 ++          O          O     O                            O        |
  110000 ++ O  O  O     O          O     O  O     O                   O     |
         O                O  O                 O     O  O  O O  O           |
  100000 ++-----------------------------------------------------------------+


                               fsmark.files_per_sec

  446 ++--------------------------------------------------------------------+
  444 ++                                                        *..         |
      |                                                       ..            |
  442 *+.*..*..*..*..*..*..   *..*..*..*...*..*..*..*..*..*..*     *..*..*..*
  440 ++                    ..                                              |
  438 ++                   *                                                |
  436 ++                                                                    |
      |                                                                     |
  434 ++                                                                    |
  432 ++                                                                    |
  430 ++                                                                    |
  428 ++ O  O  O  O     O  O  O  O  O  O   O     O     O     O  O  O  O  O  |
      |                                                                     |
  426 O+             O                        O     O     O                 |
  424 ++--------------------------------------------------------------------+


                             fsmark.time.elapsed_time

  193 ++--------------------------------------------------------------------+
      O              O                        O                             |
  192 ++       O  O                    O   O        O  O  O  O     O  O     |
  191 ++ O  O           O  O     O  O            O              O           |
      |                       O                                          O  |
  190 ++                                                                    |
  189 ++                                                                    |
      |                                                                     |
  188 ++                                                                    |
  187 ++                                                                    |
      |                   .*..                                              |
  186 *+.  .*..*..*..*..*.    *..  .*..  ..*..  .*..  .*..  .*..   *..*..*..*
  185 ++ *.                      *.    *.     *.    *.    *.     ..         |
      |                                                         *           |
  184 ++--------------------------------------------------------------------+


                           fsmark.time.elapsed_time.max

  193 ++--------------------------------------------------------------------+
      O              O                        O                             |
  192 ++       O  O                    O   O        O  O  O  O     O  O     |
  191 ++ O  O           O  O     O  O            O              O           |
      |                       O                                          O  |
  190 ++                                                                    |
  189 ++                                                                    |
      |                                                                     |
  188 ++                                                                    |
  187 ++                                                                    |
      |                   .*..                                              |
  186 *+.  .*..*..*..*..*.    *..  .*..  ..*..  .*..  .*..  .*..   *..*..*..*
  185 ++ *.                      *.    *.     *.    *.    *.     ..         |
      |                                                         *           |
  184 ++--------------------------------------------------------------------+


                      fsmark.time.involuntary_context_switches

  98500 ++------------------------------------------------------------------+
  98000 ++               .*                                                 |
        |  *..        .*.  +       *..                         .*..*..*     *
  97500 ++.   *..*..*.      +    ..   *..*.*..*..*..*..*..*..*.        +   +|
  97000 *+                   *..*                                       + + |
        |                                                                *  |
  96500 ++                                                                  |
  96000 ++                                                                  |
  95500 ++                                                                  |
        |                                                                   |
  95000 ++    O  O  O                 O    O                          O  O  |
  94500 ++                O     O  O     O    O  O  O     O        O        |
        O  O                                           O     O  O           |
  94000 ++             O     O                                              |
  93500 ++------------------------------------------------------------------+


                                 vmstat.system.in

  3100 ++-------------------------------------------------------------------+
  3050 *+.                 .*..  .*..  .*..*..           .*..*..            |
       |    .*..*..  .*..*.    *.    *.       *..  .*..*.         .*..*..*..*
  3000 ++ *.       *.                            *.             *.          |
  2950 ++                                                                   |
  2900 ++                                                                   |
  2850 ++                                                                   |
       |                                                                    |
  2800 ++                                                                   |
  2750 ++                                                                   |
  2700 ++                                                                   |
  2650 ++                                              O     O              |
       |        O     O  O        O  O  O  O  O  O                 O  O     |
  2600 O+ O  O     O        O  O                    O     O     O        O  |
  2550 ++-------------------------------------------------------------------+


                       numa-vmstat.node0.nr_slab_unreclaimable

  12000 ++------------------------------------------------------------------+
        |                                                       O           |
  11000 ++    O     O           O        O    O                    O        |
        O        O     O           O                                     O  |
        |  O              O           O    O     O     O     O        O     |
  10000 ++                   O                      O     O                 |
        |                                                                   |
   9000 ++                                                                  |
        |                                                                   |
   8000 ++                                             *..                  |
        |                                    .*..*..  +           .*..     .*
        |    .*..        .*..           .*.*.        +    *..*..*.    *..*. |
   7000 *+.*.         .*.         .*..*.            *                       |
        |        *..*.       *..*.                                          |
   6000 ++------------------------------------------------------------------+


                            numa-vmstat.node0.nr_dirtied

  58000 ++------------------------------------------------------------------+
  57000 ++                                                               O  |
        O                             O             O     O                 |
  56000 ++    O     O  O           O       O                    O           |
  55000 ++ O     O           O           O    O  O     O     O     O  O     |
        |                 O     O                                           |
  54000 ++                                                                  |
  53000 ++                                                                  |
  52000 ++                                                                  |
        |  *..                                   *                          |
  51000 +++     .*..                      .*.. .. +            .*..      *..|
  50000 ++    *.    *..*..*..           .*    *    +  .*..   *.    *.. ..   *
        *                    *..  .*..*.            *.     ..         *     |
  49000 ++                      *.                        *                 |
  48000 ++------------------------------------------------------------------+


                            numa-vmstat.node0.nr_written

  58000 ++------------------------------------------------------------------+
  57000 ++                                                               O  |
        O              O              O             O     O                 |
  56000 ++    O     O              O       O                    O     O     |
  55000 ++ O     O           O           O    O  O     O     O     O        |
        |                 O     O                                           |
  54000 ++                                                                  |
  53000 ++                                                                  |
  52000 ++                                                                  |
        |                                        *                          |
  51000 ++ *..  .*..                      .*.. .. +    *       .*..      *..|
  50000 ++.   *.    *..*..*..           .*    *    + .. +    *.    *.. ..   *
        *                    *..  .*..*.            *    + ..         *     |
  49000 ++                      *.                        *                 |
  48000 ++------------------------------------------------------------------+


                            numa-meminfo.node0.SUnreclaim

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


                          proc-vmstat.nr_slab_unreclaimable

  17500 ++-O--O-----O--O-------------------O--O--------O-----O-----O-----O--+
  17000 O+       O        O  O  O  O  O  O       O  O     O     O     O     |
        |                                                                   |
  16500 ++                                                                  |
  16000 ++                                                                  |
        |                                                                   |
  15500 ++                                                                  |
  15000 ++                                                                  |
  14500 ++                                                                  |
        |                                                                   |
  14000 ++                                                                  |
  13500 ++                                                                  |
        |                                                                   |
  13000 *+.*..*..*..*..*..*..*..*..*..*..*.*..*..*..*..*..*..*..*..*..*..*..*
  12500 ++------------------------------------------------------------------+


                                    meminfo.Slab

  185000 ++-----------------------------------------------------------------+
         |              O                   O           O    O        O     |
  180000 O+ O  O  O  O    O  O  O  O  O  O     O  O  O     O    O  O     O  |
         |                                                                  |
         |                                                                  |
  175000 ++                                                                 |
         |                                                                  |
  170000 ++                                                                 |
         |                                                                  |
  165000 ++                                                                 |
         |                                                                  |
         |                                                                  |
  160000 *+.*..*..*..*..*.*..*..     .*..*..*..*..*..  .*.. .*..*..*..*..*..*
         |                      *..*.                *.    *                |
  155000 ++-----------------------------------------------------------------+


                                 meminfo.SUnreclaim

  70000 ++-O--O-----O--O-------------------O--O--------O-----O-----O-----O--+
  68000 O+       O        O  O  O  O  O  O       O  O     O     O     O     |
        |                                                                   |
  66000 ++                                                                  |
  64000 ++                                                                  |
        |                                                                   |
  62000 ++                                                                  |
  60000 ++                                                                  |
  58000 ++                                                                  |
        |                                                                   |
  56000 ++                                                                  |
  54000 ++                                                                  |
        |                                                                   |
  52000 *+.*..*..*..*..*..*..*..*..*..*..*.*..*..*..*..*..*..*..*..*..*..*..*
  50000 ++------------------------------------------------------------------+


                          slabinfo.kmalloc-256.active_objs

  25000 ++------------------------------------------------------------------+
        |  O  O  O  O  O     O  O  O  O  O O  O  O  O  O  O  O  O  O  O  O  |
        O                 O                                                 |
  20000 ++                                                                  |
        |                                                                   |
        |                                                                   |
  15000 ++                                                                  |
        |                                                                   |
  10000 ++                                                                  |
        |                                                                   |
        |                                                                   |
   5000 ++                                                                  |
        *..*..*..*..*..*..*..*..*..*..*..*.*..*..*..*..*..*..*..*..*..*..*..*
        |                                                                   |
      0 ++------------------------------------------------------------------+


                            slabinfo.kmalloc-256.num_objs

  24000 ++-O--O-----O--O--------O-----O--O-O--O--O--O--O--O--O-----O-----O--+
  22000 O+       O        O  O     O                            O     O     |
        |                                                                   |
  20000 ++                                                                  |
  18000 ++                                                                  |
        |                                                                   |
  16000 ++                                                                  |
  14000 ++                                                                  |
  12000 ++                                                                  |
        |                                                                   |
  10000 ++                                                                  |
   8000 ++                                                                  |
        |                                                                   |
   6000 ++                                   .*..  .*..*..*..     .*..  .*..|
   4000 *+-*--*--*--*--*--*--*--*--*--*--*-*-----*-----------*--*-----*-----*


                         slabinfo.kmalloc-256.active_slabs

  800 ++--------------------------------------------------------------------+
      O  O  O     O  O        O  O  O  O   O  O  O  O  O  O  O     O  O  O  |
  700 ++       O        O  O                                    O           |
      |                                                                     |
  600 ++                                                                    |
      |                                                                     |
  500 ++                                                                    |
      |                                                                     |
  400 ++                                                                    |
      |                                                                     |
  300 ++                                                                    |
      |                                                                     |
  200 ++                                                                    |
      *..*..*..*..*..*..*..*..*..*..*..*...*..*..*..*..*..*..*..*..*..*..*..*
  100 ++--------------------------------------------------------------------+


                          slabinfo.kmalloc-256.num_slabs

  800 ++--------------------------------------------------------------------+
      O  O  O     O  O        O  O  O  O   O  O  O  O  O  O  O     O  O  O  |
  700 ++       O        O  O                                    O           |
      |                                                                     |
  600 ++                                                                    |
      |                                                                     |
  500 ++                                                                    |
      |                                                                     |
  400 ++                                                                    |
      |                                                                     |
  300 ++                                                                    |
      |                                                                     |
  200 ++                                                                    |
      *..*..*..*..*..*..*..*..*..*..*..*...*..*..*..*..*..*..*..*..*..*..*..*
  100 ++--------------------------------------------------------------------+


                          slabinfo.kmalloc-192.active_objs

  70000 ++------------------------------------------------------------------+
        O  O  O  O  O  O  O  O  O  O  O  O O  O  O  O  O  O  O  O  O  O  O  |
  60000 ++                                                                  |
        |                                                                   |
  50000 ++                                                                  |
        |                                                                   |
  40000 ++                                                                  |
        |                                                                   |
  30000 ++                                                                  |
        |                                                                   |
  20000 ++                                                                  |
        |                                                                   |
  10000 *+.                                              .*..           .*..|
        |  *..*..*..*..*..*..*..*..*..*..*.*..*..*..*..*.    *..*..*..*.    *
      0 ++------------------------------------------------------------------+


                            slabinfo.kmalloc-192.num_objs

  70000 ++------------------------------------------------------------------+
        O  O  O  O  O  O  O  O  O  O  O  O O  O  O  O  O  O  O  O  O  O  O  |
  60000 ++                                                                  |
        |                                                                   |
  50000 ++                                                                  |
        |                                                                   |
  40000 ++                                                                  |
        |                                                                   |
  30000 ++                                                                  |
        |                                                                   |
  20000 ++                                                                  |
        |                                                                   |
  10000 *+.  .*..                 .*..*..*.  .*..  .*..  .*..     .*..  .*..*
        |  *.    *..*..*..*..*..*.         *.    *.    *.    *..*.    *.    |
      0 ++------------------------------------------------------------------+


                         slabinfo.kmalloc-192.active_slabs

  1600 O+-O--O--O--O--O--O--O--O--O--O--O--O--O--O--O--O--O--O--O--O--O--O--+
       |                                                                    |
  1400 ++                                                                   |
  1200 ++                                                                   |
       |                                                                    |
  1000 ++                                                                   |
       |                                                                    |
   800 ++                                                                   |
       |                                                                    |
   600 ++                                                                   |
   400 ++                                                                   |
       |                                                                    |
   200 *+.*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*
       |                                                                    |
     0 ++-------------------------------------------------------------------+


                          slabinfo.kmalloc-192.num_slabs

  1600 O+-O--O--O--O--O--O--O--O--O--O--O--O--O--O--O--O--O--O--O--O--O--O--+
       |                                                                    |
  1400 ++                                                                   |
  1200 ++                                                                   |
       |                                                                    |
  1000 ++                                                                   |
       |                                                                    |
   800 ++                                                                   |
       |                                                                    |
   600 ++                                                                   |
   400 ++                                                                   |
       |                                                                    |
   200 *+.*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*
       |                                                                    |
     0 ++-------------------------------------------------------------------+


                           slabinfo.kmalloc-32.active_objs

  55000 ++------------------------------------------------------------------+
        |           O                                                       |
  50000 O+ O  O  O                                                          |
  45000 ++                                                                  |
        |                                                                   |
  40000 ++                                                                  |
        |                                                                   |
  35000 ++                                                                  |
        |                                O O        O  O  O  O     O  O  O  |
  30000 ++             O  O  O  O  O  O       O  O              O           |
  25000 ++                                                                  |
        |                                                                   |
  20000 ++                                                                  |
        *..*..*..*..  .*..*..*..*..*..*..*.*..*..*..*..  .*..*..*..*..*..*..*
  15000 ++----------*----------------------------------*--------------------+


                            slabinfo.kmalloc-32.num_objs

  55000 ++------------------------------------------------------------------+
        O  O  O     O                                                       |
  50000 ++       O                                                          |
  45000 ++                                                                  |
        |                                                                   |
  40000 ++                                                                  |
        |                                                                   |
  35000 ++                                                                  |
        |              O     O  O  O  O  O O  O  O  O  O  O  O     O  O  O  |
  30000 ++                O                                     O           |
  25000 ++                                                                  |
        |                                                                   |
  20000 ++                                                                  |
        *..*..*..*..  .*..*..*..*..*..*..*.*..*..*..*..  .*..*..*..*..*..*..*
  15000 ++----------*----------------------------------*--------------------+


                         slabinfo.kmalloc-32.active_slabs

  400 O+-O--O--O--O---------------------------------------------------------+
      |                                                                     |
  350 ++                                                                    |
      |                                                                     |
      |                                                                     |
  300 ++                                                                    |
      |                                                                     |
  250 ++             O     O  O  O  O  O   O  O  O  O  O  O  O     O  O  O  |
      |                 O                                       O           |
  200 ++                                                                    |
      |                                                                     |
      |                                                                     |
  150 *+.*..*..*..  .*..*..*..  .*..*..*...*..*..  .*..  .*..*..  .*..*..*..*
      |           *.          *.                 *.    *.       *.          |
  100 ++--------------------------------------------------------------------+


                           slabinfo.kmalloc-32.num_slabs

  400 O+-O--O--O--O---------------------------------------------------------+
      |                                                                     |
  350 ++                                                                    |
      |                                                                     |
      |                                                                     |
  300 ++                                                                    |
      |                                                                     |
  250 ++             O     O  O  O  O  O   O  O  O  O  O  O  O     O  O  O  |
      |                 O                                       O           |
  200 ++                                                                    |
      |                                                                     |
      |                                                                     |
  150 *+.*..*..*..  .*..*..*..  .*..*..*...*..*..  .*..  .*..*..  .*..*..*..*
      |           *.          *.                 *.    *.       *.          |
  100 ++--------------------------------------------------------------------+


                      kmsg.usb_usb7:can_t_set_config___error

    1 ++--------------------------------------------------------------------*
      |                                                                     |
      |                                                                    :|
  0.8 ++                                                                   :|
      |                                                                    :|
      |                                                                    :|
  0.6 ++                                                                  : |
      |                                                                   : |
  0.4 ++                                                                  : |
      |                                                                  :  |
      |                                                                  :  |
  0.2 ++                                                                 :  |
      |                                                                  :  |
      |                                                                 :   |
    0 *+--*---*---*---*----*---*---*---*---*---*---*---*----*---*---*---*---+

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

To reproduce:

        git clone 
git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
        cd lkp-tests
        bin/lkp install job.yaml  # job file is attached in this email
        bin/lkp run     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
---
LKP_SERVER: inn
LKP_CGI_PORT: 80
LKP_CIFS_PORT: 139
testcase: fsmark
default-monitors:
  wait: activate-monitor
  kmsg: 
  uptime: 
  iostat: 
  vmstat: 
  numa-numastat: 
  numa-vmstat: 
  numa-meminfo: 
  proc-vmstat: 
  proc-stat:
    interval: 10
  meminfo: 
  slabinfo: 
  interrupts: 
  lock_stat: 
  latency_stats: 
  softirqs: 
  bdi_dev_mapping: 
  diskstats: 
  nfsstat: 
  cpuidle: 
  cpufreq-stats: 
  turbostat: 
  pmeter: 
  sched_debug:
    interval: 60
cpufreq_governor: performance
default-watchdogs:
  oom-killer: 
  watchdog: 
commit: 31e1a90a1e09e8e600f1b0b5dcb871c399448f81
model: Nehalem-EP
memory: 12G
hdd_partitions: "/dev/disk/by-id/ata-ST3500514NS_9WJ03EBA-part3"
swap_partitions: "/dev/disk/by-id/ata-ST3120026AS_5MS07HA2-part2"
rootfs_partition: "/dev/disk/by-id/ata-ST3500514NS_9WJ03EBA-part1"
category: benchmark
iterations: 1x
nr_threads: 32t
disk: 1HDD
fs: xfs
fs2: nfsv4
fsmark:
  filesize: 5K
  test_size: 400M
  sync_method: fsyncBeforeClose
  nr_directories: 16d
  nr_files_per_directory: 256fpd
queue: cyclic
testbox: lkp-ne04
tbox_group: lkp-ne04
kconfig: x86_64-rhel
enqueue_time: 2015-09-16 01:53:44.450007854 +08:00
id: fa22bba34d95d9194b42a923ea8e320612db9c82
user: lkp
compiler: gcc-4.9
head_commit: 31e1a90a1e09e8e600f1b0b5dcb871c399448f81
base_commit: 6ff33f3902c3b1c5d0db6b1e2c70b6d76fba357f
branch: linux-devel/devel-hourly-2015091604
kernel: 
"/pkg/linux/x86_64-rhel/gcc-4.9/31e1a90a1e09e8e600f1b0b5dcb871c399448f81/vmlinuz-4.3.0-rc1-wl-ath-00944-g31e1a90"
rootfs: debian-x86_64-2015-02-07.cgz
result_root: 
"/result/fsmark/performance-1x-32t-1HDD-xfs-nfsv4-5K-400M-fsyncBeforeClose-16d-256fpd/lkp-ne04/debian-x86_64-2015-02-07.cgz/x86_64-rhel/gcc-4.9/31e1a90a1e09e8e600f1b0b5dcb871c399448f81/0"
job_file: 
"/lkp/scheduled/lkp-ne04/cyclic_fsmark-performance-1x-32t-1HDD-xfs-nfsv4-5K-400M-fsyncBeforeClose-16d-256fpd-x86_64-rhel-CYCLIC_HEAD-31e1a90a1e09e8e600f1b0b5dcb871c399448f81-20150916-88681-jka6un-0.yaml"
dequeue_time: 2015-09-16 05:10:38.959773945 +08:00
nr_cpu: "$(nproc)"
max_uptime: 1073.42
initrd: "/osimage/debian/debian-x86_64-2015-02-07.cgz"
bootloader_append:
- root=/dev/ram0
- user=lkp
- 
job=/lkp/scheduled/lkp-ne04/cyclic_fsmark-performance-1x-32t-1HDD-xfs-nfsv4-5K-400M-fsyncBeforeClose-16d-256fpd-x86_64-rhel-CYCLIC_HEAD-31e1a90a1e09e8e600f1b0b5dcb871c399448f81-20150916-88681-jka6un-0.yaml
- ARCH=x86_64
- kconfig=x86_64-rhel
- branch=linux-devel/devel-hourly-2015091604
- commit=31e1a90a1e09e8e600f1b0b5dcb871c399448f81
- 
BOOT_IMAGE=/pkg/linux/x86_64-rhel/gcc-4.9/31e1a90a1e09e8e600f1b0b5dcb871c399448f81/vmlinuz-4.3.0-rc1-wl-ath-00944-g31e1a90
- max_uptime=1073
- 
RESULT_ROOT=/result/fsmark/performance-1x-32t-1HDD-xfs-nfsv4-5K-400M-fsyncBeforeClose-16d-256fpd/lkp-ne04/debian-x86_64-2015-02-07.cgz/x86_64-rhel/gcc-4.9/31e1a90a1e09e8e600f1b0b5dcb871c399448f81/0
- LKP_SERVER=inn
- |2-


  earlyprintk=ttyS0,115200 systemd.log_level=err
  debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100
  panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 
prompt_ramdisk=0
  console=ttyS0,115200 console=tty0 vga=normal

  rw
lkp_initrd: "/lkp/lkp/lkp-x86_64.cgz"
modules_initrd: 
"/pkg/linux/x86_64-rhel/gcc-4.9/31e1a90a1e09e8e600f1b0b5dcb871c399448f81/modules.cgz"
bm_initrd: 
"/osimage/deps/debian-x86_64-2015-02-07.cgz/lkp.cgz,/osimage/deps/debian-x86_64-2015-02-07.cgz/run-ipconfig.cgz,/osimage/deps/debian-x86_64-2015-02-07.cgz/turbostat.cgz,/lkp/benchmarks/turbostat.cgz,/osimage/deps/debian-x86_64-2015-02-07.cgz/fs.cgz,/osimage/deps/debian-x86_64-2015-02-07.cgz/fs2.cgz,/lkp/benchmarks/fsmark.cgz"
job_state: finished
loadavg: 32.41 16.01 6.32 1/269 5937
start_time: '1442351486'
end_time: '1442351678'
version: "/lkp/lkp/.src-20150915-235159"
echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu10/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu11/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu12/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu13/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu14/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu15/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu2/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu3/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu4/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu5/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu6/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu7/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu8/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu9/cpufreq/scaling_governor
mkfs -t xfs /dev/sda3
mount -t xfs -o nobarrier,inode64 /dev/sda3 /fs/sda3
/etc/init.d/rpcbind start
/etc/init.d/nfs-common start
/etc/init.d/nfs-kernel-server start
mount -t nfs -o vers=4 localhost:/fs/sda3 /nfs/sda3
./fs_mark -d /nfs/sda3/1 -d /nfs/sda3/2 -d /nfs/sda3/3 -d /nfs/sda3/4 -d 
/nfs/sda3/5 -d /nfs/sda3/6 -d /nfs/sda3/7 -d /nfs/sda3/8 -d /nfs/sda3/9 -d 
/nfs/sda3/10 -d /nfs/sda3/11 -d /nfs/sda3/12 -d /nfs/sda3/13 -d /nfs/sda3/14 -d 
/nfs/sda3/15 -d /nfs/sda3/16 -d /nfs/sda3/17 -d /nfs/sda3/18 -d /nfs/sda3/19 -d 
/nfs/sda3/20 -d /nfs/sda3/21 -d /nfs/sda3/22 -d /nfs/sda3/23 -d /nfs/sda3/24 -d 
/nfs/sda3/25 -d /nfs/sda3/26 -d /nfs/sda3/27 -d /nfs/sda3/28 -d /nfs/sda3/29 -d 
/nfs/sda3/30 -d /nfs/sda3/31 -d /nfs/sda3/32 -D 16 -N 256 -n 2560 -L 1 -S 1 -s 
5120

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