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Date:	Tue, 17 Mar 2015 13:50:27 +0800
From:	Huang Ying <ying.huang@...el.com>
To:	Jason Low <jason.low2@...com>
Cc:	LKML <linux-kernel@...r.kernel.org>, LKP ML <lkp@...org>,
	"Peter Zijlstra (Intel)" <peterz@...radead.org>,
	Davidlohr Bueso <dave@...olabs.net>,
	Aswin Chandramouleeswaran <aswin@...com>,
	Tim Chen <tim.c.chen@...ux.intel.com>, chegu_vinod@...com,
	tglx@...utronix.de
Subject: [LKP] [locking/mutex] 07d2413a61d: -3.6% unixbench.score +60.8%
 unixbench.time.system_time

FYI, we noticed the below changes on

git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
commit 07d2413a61db6500f58e614e873eed79d7f2ed72 ("locking/mutex: In mutex_spin_on_owner(), return true when owner changes")


testbox/testcase/testparams: lituya/unixbench/performance-fsdisk

d6abfdb2022368d8  07d2413a61db6500f58e614e87  
----------------  --------------------------  
         %stddev     %change         %stddev
             \          |                \  
     10131 ±  1%      -3.6%       9770 ±  0%  unixbench.score
      1049 ± 18%     +60.8%       1687 ±  0%  unixbench.time.system_time
      7144 ± 30%    +203.6%      21686 ±  3%  unixbench.time.involuntary_context_switches
  24573900 ± 19%     -93.9%    1497516 ±  8%  unixbench.time.voluntary_context_switches
       369 ± 18%     +59.5%        589 ±  0%  unixbench.time.percent_of_cpu_this_job_got
      3849 ±  5%     -17.9%       3159 ±  0%  uptime.idle
      4060 ±  0%     +25.3%       5087 ± 20%  meminfo.AnonHugePages
         3 ± 23%     +66.7%          5 ±  0%  vmstat.procs.r
    174876 ± 18%     -90.7%      16282 ±  5%  vmstat.system.cs
     87032 ±  9%     -48.9%      44484 ±  2%  softirqs.RCU
    213221 ±  5%     -79.7%      43210 ±  0%  softirqs.SCHED
    551372 ± 17%     +60.8%     886553 ±  0%  softirqs.TIMER
      7144 ± 30%    +203.6%      21686 ±  3%  time.involuntary_context_switches
       369 ± 18%     +59.5%        589 ±  0%  time.percent_of_cpu_this_job_got
      1049 ± 18%     +60.8%       1687 ±  0%  time.system_time
  24573900 ± 19%     -93.9%    1497516 ±  8%  time.voluntary_context_switches
     23.55 ± 17%     +57.3%      37.05 ±  0%  turbostat.%Busy
       779 ± 17%     +57.1%       1223 ±  0%  turbostat.Avg_MHz
     22.32 ± 18%     -61.6%       8.56 ±  4%  turbostat.CPU%c1
     42.53 ±  2%      +5.6%      44.92 ±  0%  turbostat.PkgWatt
      0.57 ±  7%      +7.5%       0.61 ±  1%  turbostat.RAMWatt
  21474227 ± 18%     -93.7%    1361886 ±  8%  cpuidle.C1-HSW.usage
 6.755e+08 ± 27%     -89.6%   70473442 ± 17%  cpuidle.C1-HSW.time
     26571 ± 25%     -92.8%       1917 ±  4%  cpuidle.C3-HSW.usage
    117581 ± 21%     -64.5%      41794 ±  1%  cpuidle.C6-HSW.usage
      1439 ± 28%     -88.0%        173 ± 43%  cpuidle.POLL.time
       524 ± 17%     -90.9%         47 ± 24%  cpuidle.POLL.usage
      4546 ± 15%     +46.3%       6651 ±  2%  sched_debug.cfs_rq[0]:/.tg->runnable_avg
       246 ± 25%     +55.4%        382 ±  2%  sched_debug.cfs_rq[0]:/.tg_runnable_contrib
    157742 ± 23%    +129.0%     361183 ±  6%  sched_debug.cfs_rq[0]:/.min_vruntime
     15438 ± 14%     +63.1%      25172 ±  9%  sched_debug.cfs_rq[0]:/.exec_clock
     11297 ± 25%     +54.9%      17499 ±  2%  sched_debug.cfs_rq[0]:/.avg->runnable_avg_sum
      4559 ± 15%     +46.3%       6669 ±  2%  sched_debug.cfs_rq[10]:/.tg->runnable_avg
         9 ± 35%     +84.2%         17 ± 15%  sched_debug.cfs_rq[10]:/.runnable_load_avg
     11563 ± 18%     +57.7%      18232 ± 10%  sched_debug.cfs_rq[10]:/.avg->runnable_avg_sum
     12727 ± 13%     +73.8%      22116 ±  4%  sched_debug.cfs_rq[10]:/.exec_clock
       251 ± 18%     +58.1%        397 ± 10%  sched_debug.cfs_rq[10]:/.tg_runnable_contrib
    152419 ± 21%    +131.9%     353450 ±  4%  sched_debug.cfs_rq[10]:/.min_vruntime
      4559 ± 15%     +46.3%       6669 ±  2%  sched_debug.cfs_rq[11]:/.tg->runnable_avg
        66 ± 19%     -73.1%         17 ± 30%  sched_debug.cfs_rq[12]:/.runnable_load_avg
      4560 ± 15%     +46.3%       6672 ±  2%  sched_debug.cfs_rq[12]:/.tg->runnable_avg
        78 ± 22%     -75.1%         19 ± 31%  sched_debug.cfs_rq[12]:/.load
    151608 ± 21%    +158.0%     391137 ± 20%  sched_debug.cfs_rq[13]:/.min_vruntime
       272 ± 23%     +58.3%        431 ± 11%  sched_debug.cfs_rq[13]:/.tg_runnable_contrib
     12552 ± 13%    +119.5%      27556 ± 37%  sched_debug.cfs_rq[13]:/.exec_clock
      4557 ± 15%     +46.4%       6674 ±  2%  sched_debug.cfs_rq[13]:/.tg->runnable_avg
     12507 ± 23%     +58.0%      19763 ± 11%  sched_debug.cfs_rq[13]:/.avg->runnable_avg_sum
       314 ±  8%     +49.8%        471 ± 28%  sched_debug.cfs_rq[14]:/.tg_runnable_contrib
      4558 ± 15%     +46.4%       6675 ±  2%  sched_debug.cfs_rq[14]:/.tg->runnable_avg
    152171 ± 21%    +187.6%     437699 ± 32%  sched_debug.cfs_rq[14]:/.min_vruntime
     14442 ±  8%     +49.7%      21618 ± 28%  sched_debug.cfs_rq[14]:/.avg->runnable_avg_sum
     11538 ± 16%     +51.7%      17502 ±  1%  sched_debug.cfs_rq[15]:/.avg->runnable_avg_sum
       252 ± 16%     +51.6%        382 ±  0%  sched_debug.cfs_rq[15]:/.tg_runnable_contrib
    152080 ± 21%    +132.5%     353587 ±  4%  sched_debug.cfs_rq[15]:/.min_vruntime
      4560 ± 15%     +46.4%       6675 ±  2%  sched_debug.cfs_rq[15]:/.tg->runnable_avg
     13692 ± 10%     +71.8%      23520 ±  4%  sched_debug.cfs_rq[15]:/.exec_clock
     12631 ± 21%     +59.3%      20127 ± 17%  sched_debug.cfs_rq[1]:/.avg->runnable_avg_sum
        10 ± 27%    +166.7%         28 ± 33%  sched_debug.cfs_rq[1]:/.runnable_load_avg
       275 ± 21%     +59.2%        438 ± 17%  sched_debug.cfs_rq[1]:/.tg_runnable_contrib
      4548 ± 15%     +46.2%       6651 ±  2%  sched_debug.cfs_rq[1]:/.tg->runnable_avg
    166428 ± 20%    +136.5%     393659 ± 14%  sched_debug.cfs_rq[1]:/.min_vruntime
     14633 ± 11%    +100.7%      29361 ± 34%  sched_debug.cfs_rq[1]:/.exec_clock
      4547 ± 15%     +46.3%       6653 ±  2%  sched_debug.cfs_rq[2]:/.tg->runnable_avg
    170439 ± 20%    +114.8%     366033 ±  3%  sched_debug.cfs_rq[2]:/.min_vruntime
     11846 ± 18%     +57.9%      18702 ±  6%  sched_debug.cfs_rq[2]:/.avg->runnable_avg_sum
     15344 ± 14%     +58.9%      24380 ±  2%  sched_debug.cfs_rq[2]:/.exec_clock
       258 ± 18%     +57.9%        408 ±  6%  sched_debug.cfs_rq[2]:/.tg_runnable_contrib
    168070 ± 16%    +114.7%     360822 ±  4%  sched_debug.cfs_rq[3]:/.min_vruntime
     11531 ± 18%     +51.7%      17496 ±  1%  sched_debug.cfs_rq[3]:/.avg->runnable_avg_sum
       251 ± 18%     +52.3%        383 ±  1%  sched_debug.cfs_rq[3]:/.tg_runnable_contrib
       388 ± 29%     -68.0%        124 ± 25%  sched_debug.cfs_rq[3]:/.tg_load_contrib
       365 ± 30%     -72.7%         99 ± 33%  sched_debug.cfs_rq[3]:/.blocked_load_avg
      4548 ± 15%     +46.3%       6655 ±  2%  sched_debug.cfs_rq[3]:/.tg->runnable_avg
     14874 ±  7%     +57.8%      23470 ±  4%  sched_debug.cfs_rq[3]:/.exec_clock
       247 ± 12%     +55.3%        383 ±  3%  sched_debug.cfs_rq[4]:/.tg_runnable_contrib
     11274 ± 12%     +56.0%      17584 ±  3%  sched_debug.cfs_rq[4]:/.avg->runnable_avg_sum
      4549 ± 15%     +46.3%       6657 ±  2%  sched_debug.cfs_rq[4]:/.tg->runnable_avg
     14121 ±  9%     +65.6%      23381 ±  4%  sched_debug.cfs_rq[4]:/.exec_clock
    160686 ± 17%    +124.3%     360493 ±  4%  sched_debug.cfs_rq[4]:/.min_vruntime
     11730 ± 14%     +73.2%      20318 ± 17%  sched_debug.cfs_rq[5]:/.avg->runnable_avg_sum
      4550 ± 15%     +46.3%       6658 ±  2%  sched_debug.cfs_rq[5]:/.tg->runnable_avg
    161214 ± 21%    +173.5%     440993 ± 37%  sched_debug.cfs_rq[5]:/.min_vruntime
       256 ± 14%     +73.0%        443 ± 17%  sched_debug.cfs_rq[5]:/.tg_runnable_contrib
      4550 ± 15%     +46.4%       6662 ±  2%  sched_debug.cfs_rq[6]:/.tg->runnable_avg
     14431 ± 13%     +31.6%      18997 ±  9%  sched_debug.cfs_rq[6]:/.avg->runnable_avg_sum
    187106 ± 33%     +97.8%     370045 ±  5%  sched_debug.cfs_rq[6]:/.min_vruntime
       314 ± 13%     +32.0%        415 ±  9%  sched_debug.cfs_rq[6]:/.tg_runnable_contrib
        13 ± 35%    +132.1%         30 ± 40%  sched_debug.cfs_rq[7]:/.runnable_load_avg
    161563 ± 22%    +124.0%     361967 ±  3%  sched_debug.cfs_rq[7]:/.min_vruntime
      4552 ± 15%     +46.4%       6663 ±  2%  sched_debug.cfs_rq[7]:/.tg->runnable_avg
       257 ± 16%     +48.4%        381 ±  2%  sched_debug.cfs_rq[7]:/.tg_runnable_contrib
         3 ± 13%     -53.8%          1 ± 33%  sched_debug.cfs_rq[7]:/.nr_spread_over
     14448 ± 18%     +63.8%      23661 ±  2%  sched_debug.cfs_rq[7]:/.exec_clock
     11755 ± 16%     +48.6%      17474 ±  2%  sched_debug.cfs_rq[7]:/.avg->runnable_avg_sum
      4554 ± 15%     +46.3%       6665 ±  2%  sched_debug.cfs_rq[8]:/.tg->runnable_avg
      4557 ± 15%     +46.3%       6667 ±  2%  sched_debug.cfs_rq[9]:/.tg->runnable_avg
    192062 ± 47%     +83.6%     352649 ±  4%  sched_debug.cfs_rq[9]:/.min_vruntime
        14 ± 36%     +58.9%         22 ± 10%  sched_debug.cpu#0.cpu_load[3]
        13 ± 37%     +66.7%         22 ±  7%  sched_debug.cpu#0.cpu_load[4]
        13 ± 35%     +61.1%         21 ± 11%  sched_debug.cpu#0.cpu_load[2]
    873975 ± 12%     -75.4%     215052 ± 24%  sched_debug.cpu#1.sched_count
        16 ±  4%     +84.4%         29 ± 39%  sched_debug.cpu#1.cpu_load[1]
        15 ± 17%     +98.4%         30 ± 35%  sched_debug.cpu#1.cpu_load[4]
    873936 ± 12%     -75.4%     214989 ± 24%  sched_debug.cpu#1.nr_switches
    436585 ± 12%     -75.5%     106889 ± 24%  sched_debug.cpu#1.sched_goidle
       564 ± 33%    +106.4%       1165 ±  7%  sched_debug.cpu#1.curr->pid
        15 ± 14%     +95.2%         30 ± 35%  sched_debug.cpu#1.cpu_load[3]
    465895 ±  8%     -77.2%     106210 ± 24%  sched_debug.cpu#1.ttwu_count
        15 ±  7%     +91.9%         29 ± 37%  sched_debug.cpu#1.cpu_load[2]
        15 ± 29%     +50.8%         23 ±  9%  sched_debug.cpu#10.cpu_load[3]
    315517 ± 11%     -94.0%      18947 ± 11%  sched_debug.cpu#10.sched_goidle
    336250 ± 12%     -94.0%      20238 ± 12%  sched_debug.cpu#10.ttwu_count
    631593 ± 11%     -93.9%      38620 ± 11%  sched_debug.cpu#10.sched_count
    631561 ± 11%     -93.9%      38572 ± 11%  sched_debug.cpu#10.nr_switches
       556 ± 20%     +93.0%       1074 ± 17%  sched_debug.cpu#10.curr->pid
        14 ± 28%     +57.6%         23 ±  8%  sched_debug.cpu#10.cpu_load[4]
    341057 ± 11%     -94.1%      20223 ±  8%  sched_debug.cpu#11.ttwu_count
    623922 ±  9%     -93.7%      39166 ±  9%  sched_debug.cpu#11.sched_count
    311611 ±  9%     -93.9%      19080 ±  9%  sched_debug.cpu#11.sched_goidle
    623869 ±  9%     -93.7%      39116 ±  9%  sched_debug.cpu#11.nr_switches
    338493 ± 10%     -94.2%      19504 ±  7%  sched_debug.cpu#12.sched_goidle
        55 ± 30%     -53.4%         26 ± 16%  sched_debug.cpu#12.cpu_load[1]
        71 ± 17%     -59.4%         29 ± 28%  sched_debug.cpu#12.cpu_load[0]
        79 ± 23%     -75.5%         19 ± 31%  sched_debug.cpu#12.load
    677539 ± 10%     -94.1%      40155 ±  7%  sched_debug.cpu#12.nr_switches
    280203 ± 33%     -92.6%      20836 ±  9%  sched_debug.cpu#12.ttwu_count
    677589 ± 10%     -94.1%      40202 ±  7%  sched_debug.cpu#12.sched_count
       509 ± 22%     +55.6%        793 ± 15%  sched_debug.cpu#12.ttwu_local
        19 ± 14%    +163.6%         50 ± 32%  sched_debug.cpu#13.cpu_load[1]
        24 ± 16%    +176.3%         67 ± 36%  sched_debug.cpu#13.cpu_load[0]
        17 ± 18%    +138.2%         40 ± 24%  sched_debug.cpu#13.cpu_load[2]
    646767 ± 13%     -94.2%      37618 ± 11%  sched_debug.cpu#13.sched_count
       709 ± 37%    +125.3%       1598 ± 23%  sched_debug.cpu#13.curr->pid
    646735 ± 13%     -94.2%      37563 ± 11%  sched_debug.cpu#13.nr_switches
        15 ± 19%    +104.8%         31 ± 23%  sched_debug.cpu#13.cpu_load[4]
        16 ± 19%    +117.2%         34 ± 21%  sched_debug.cpu#13.cpu_load[3]
    327419 ± 14%     -93.9%      20012 ±  9%  sched_debug.cpu#13.ttwu_count
    323068 ± 13%     -94.3%      18422 ± 11%  sched_debug.cpu#13.sched_goidle
    674567 ± 13%     -93.6%      43222 ± 11%  sched_debug.cpu#14.sched_count
       750 ± 30%     +90.8%       1432 ± 15%  sched_debug.cpu#14.curr->pid
       478 ± 22%     +33.9%        640 ± 21%  sched_debug.cpu#14.ttwu_local
    339046 ± 13%     -93.9%      20669 ±  7%  sched_debug.cpu#14.ttwu_count
    336995 ± 13%     -93.7%      21107 ± 11%  sched_debug.cpu#14.sched_goidle
    674534 ± 13%     -93.6%      43164 ± 11%  sched_debug.cpu#14.nr_switches
        19 ± 12%     +45.6%         28 ± 18%  sched_debug.cpu#15.cpu_load[1]
    299069 ± 13%     -93.4%      19783 ±  5%  sched_debug.cpu#15.sched_goidle
       813 ± 42%     +65.5%       1346 ±  6%  sched_debug.cpu#15.curr->pid
    580735 ±  3%     +11.3%     646611 ±  4%  sched_debug.cpu#15.avg_idle
    331682 ± 14%     -93.7%      20957 ±  7%  sched_debug.cpu#15.ttwu_count
    599051 ± 13%     -93.2%      41010 ±  5%  sched_debug.cpu#15.sched_count
        14 ± 15%     +69.5%         25 ±  5%  sched_debug.cpu#15.cpu_load[4]
        15 ± 12%     +71.7%         25 ±  7%  sched_debug.cpu#15.cpu_load[3]
        16 ± 10%     +62.1%         26 ± 11%  sched_debug.cpu#15.cpu_load[2]
       817 ± 11%     +61.3%       1318 ± 17%  sched_debug.cpu#15.ttwu_local
    599015 ± 13%     -93.2%      40958 ±  5%  sched_debug.cpu#15.nr_switches
   1009949 ± 27%     -63.0%     373861 ± 42%  sched_debug.cpu#2.sched_count
        15 ± 16%     +54.0%         24 ± 14%  sched_debug.cpu#2.cpu_load[1]
   1009909 ± 27%     -63.0%     373802 ± 42%  sched_debug.cpu#2.nr_switches
        14 ± 18%     +61.0%         23 ± 10%  sched_debug.cpu#2.cpu_load[2]
    504627 ± 27%     -63.1%     186448 ± 42%  sched_debug.cpu#2.sched_goidle
        14 ± 20%     +63.8%         23 ±  8%  sched_debug.cpu#2.cpu_load[3]
    534870 ± 25%     -64.9%     187727 ± 42%  sched_debug.cpu#2.ttwu_count
        14 ± 23%     +66.7%         23 ±  6%  sched_debug.cpu#2.cpu_load[4]
        16 ± 24%     +62.5%         26 ± 19%  sched_debug.cpu#2.cpu_load[0]
    462676 ± 24%     -76.7%     107823 ± 47%  sched_debug.cpu#3.sched_goidle
    926031 ± 24%     -76.6%     217084 ± 47%  sched_debug.cpu#3.sched_count
    494298 ± 23%     -78.2%     107584 ± 46%  sched_debug.cpu#3.ttwu_count
        18 ±  6%     +18.9%         22 ±  5%  sched_debug.cpu#3.cpu_load[2]
    925992 ± 24%     -76.6%     217032 ± 47%  sched_debug.cpu#3.nr_switches
        16 ± 13%     +37.9%         22 ±  3%  sched_debug.cpu#3.cpu_load[3]
        15 ± 21%     +52.5%         23 ±  3%  sched_debug.cpu#3.cpu_load[4]
        33 ± 20%     -36.8%         21 ± 17%  sched_debug.cpu#3.cpu_load[0]
        14 ± 18%     +56.9%         22 ±  3%  sched_debug.cpu#4.cpu_load[4]
        15 ± 23%     +41.3%         22 ±  4%  sched_debug.cpu#4.cpu_load[3]
       948 ± 27%     +36.5%       1295 ± 11%  sched_debug.cpu#4.curr->pid
       855 ± 43%     +67.1%       1429 ± 16%  sched_debug.cpu#5.curr->pid
        22 ±  9%     +87.8%         42 ± 29%  sched_debug.cpu#5.cpu_load[0]
        15 ± 13%    +114.5%         33 ± 43%  sched_debug.cpu#5.cpu_load[3]
        15 ± 15%    +119.7%         33 ± 47%  sched_debug.cpu#5.cpu_load[4]
        18 ±  8%    +100.0%         37 ± 32%  sched_debug.cpu#5.cpu_load[1]
        16 ± 10%    +110.8%         34 ± 38%  sched_debug.cpu#5.cpu_load[2]
    415247 ± 12%     -80.9%      79279 ± 20%  sched_debug.cpu#6.sched_goidle
    831074 ± 12%     -80.8%     159814 ± 20%  sched_debug.cpu#6.nr_switches
    831113 ± 12%     -80.8%     159869 ± 20%  sched_debug.cpu#6.sched_count
       811 ± 36%     +50.0%       1216 ± 15%  sched_debug.cpu#6.curr->pid
    430138 ± 18%     -82.1%      76868 ± 22%  sched_debug.cpu#6.ttwu_count
    860988 ± 14%     -70.9%     250529 ± 33%  sched_debug.cpu#7.nr_switches
    430158 ± 14%     -71.0%     124543 ± 34%  sched_debug.cpu#7.sched_goidle
    861025 ± 14%     -70.9%     250578 ± 33%  sched_debug.cpu#7.sched_count
       658 ± 21%    +123.8%       1473 ± 27%  sched_debug.cpu#7.curr->pid
        15 ± 19%     +60.0%         24 ±  7%  sched_debug.cpu#7.cpu_load[4]
        15 ± 14%     +62.9%         25 ± 13%  sched_debug.cpu#7.cpu_load[2]
    440642 ± 11%     -71.9%     123684 ± 34%  sched_debug.cpu#7.ttwu_count
        16 ±  7%     +58.2%         26 ± 27%  sched_debug.cpu#7.cpu_load[1]
        15 ± 16%     +65.0%         24 ±  9%  sched_debug.cpu#7.cpu_load[3]
       823 ± 25%     +61.0%       1325 ± 31%  sched_debug.cpu#8.curr->pid
    638635 ± 13%     -93.8%      39544 ±  7%  sched_debug.cpu#9.sched_count
    638594 ± 13%     -93.8%      39497 ±  7%  sched_debug.cpu#9.nr_switches
    319018 ± 13%     -93.9%      19378 ±  7%  sched_debug.cpu#9.sched_goidle
    328979 ± 10%     -93.9%      19948 ±  6%  sched_debug.cpu#9.ttwu_count

lituya: Grantley Haswell
Memory: 16G




                                   softirqs.SCHED

  300000 ++-----------------------------------------------------------------+
         |     *                                                            |
  250000 ++    :                 *                                          |
         |    : :.*    .*. .*   : +     .*                                  |
         *.*. : *  + .*   * :   :  *.*.*  +                                 |
  200000 ++  *      *        : *           *                                |
         |                   :+                                             |
  150000 ++                  *                                              |
         |                                                                  |
  100000 ++                                                                 |
         |                                                                  |
         |                                                                  |
   50000 O+O O OO O O O O O OO O O O O O O OO O O O O O OO O O O O O OO O O O
         |                                                                  |
       0 ++-----------------------------------------------------------------+


                                 cpuidle.C1-HSW.usage

    3e+07 ++----------------------------------------------------------------+
          |                            *                                    |
  2.5e+07 ++*              *       .*  :+                                   |
          | :              ::     *  : : *                                  |
          |: :   *        : *    +   ::   :                                 |
    2e+07 ++ :  * :       :  :  *     *   :                                 |
          |:  :+  :      :   : :           *                                |
  1.5e+07 ++  *    *.*.*.*    ::                                            |
          *                   *                                             |
    1e+07 ++                                                                |
          |                                                                 |
          |                                                                 |
    5e+06 ++                                                                |
          O O O OO O O     OO   O   O        O O OO O O O O        O O OO O O
        0 ++-----------O-O----O---O---OO-O-O----------------OO-O-O----------+


                       unixbench.time.voluntary_context_switches

  3.5e+07 ++----------------------------------------------------------------+
          |                                                                 |
    3e+07 ++*              *       .*  *.                                   |
          | :              :*     *  : : *                                  |
  2.5e+07 ++ :   *        : :    +   : :  :                                 |
          |: :  * :       :  :  *     :   :                                 |
    2e+07 ++  :+  :      :   : :      *    *                                |
          |   *    *.*.*.*    ::                                            |
  1.5e+07 *+                  *                                             |
          |                                                                 |
    1e+07 ++                                                                |
          |                                                                 |
    5e+06 ++                                                                |
          O O O OO O O     OO       O        O O OO O O O O        O O OO O O
        0 ++-----------O-O----O-O-O---OO-O-O----------------OO-O-O----------+


                     unixbench.time.involuntary_context_switches

  30000 ++------------------------------------------------------------------+
        |                                                                   |
  25000 ++O                                 O                               |
        |   O    O         O   O              O                    O        |
        O       O  O O   O   O    O O   O       O OO O O O O   O        O O O
  20000 ++    O        O         O    O   O                  O   O  O O     |
        |                                                                   |
  15000 ++                                                                  |
        |                                                                   |
  10000 *+  *.*  *.*.*.*     *.                                             |
        |: :   + :      :   +  *.   *    .*                                 |
        |: :    *       : .*     * + + .*                                   |
   5000 ++*              *        *   *                                     |
        |                                                                   |
      0 ++------------------------------------------------------------------+


                            time.voluntary_context_switches

  3.5e+07 ++----------------------------------------------------------------+
          |                                                                 |
    3e+07 ++*              *       .*  *.                                   |
          | :              :*     *  : : *                                  |
  2.5e+07 ++ :   *        : :    +   : :  :                                 |
          |: :  * :       :  :  *     :   :                                 |
    2e+07 ++  :+  :      :   : :      *    *                                |
          |   *    *.*.*.*    ::                                            |
  1.5e+07 *+                  *                                             |
          |                                                                 |
    1e+07 ++                                                                |
          |                                                                 |
    5e+06 ++                                                                |
          O O O OO O O     OO       O        O O OO O O O O        O O OO O O
        0 ++-----------O-O----O-O-O---OO-O-O----------------OO-O-O----------+


                          time.involuntary_context_switches

  30000 ++------------------------------------------------------------------+
        |                                                                   |
  25000 ++O                                 O                               |
        |   O    O         O   O              O                    O        |
        O       O  O O   O   O    O O   O       O OO O O O O   O        O O O
  20000 ++    O        O         O    O   O                  O   O  O O     |
        |                                                                   |
  15000 ++                                                                  |
        |                                                                   |
  10000 *+  *.*  *.*.*.*     *.                                             |
        |: :   + :      :   +  *.   *    .*                                 |
        |: :    *       : .*     * + + .*                                   |
   5000 ++*              *        *   *                                     |
        |                                                                   |
      0 ++------------------------------------------------------------------+


                                  vmstat.system.cs

  250000 ++-----------------------------------------------------------------+
         |                                                                  |
         | *              *.      .*   *.                                   |
  200000 ++:              : *    *  :  : *                                  |
         |: :   *        :  :   +   : :   :                                 |
         |: :  * :       :  :  *     ::   :                                 |
  150000 ++  :+  :      :    ::      *     *                                |
         |   *    *.*.*.*    ::                                             |
  100000 *+                  *                                              |
         |                                                                  |
         |                                                                  |
   50000 ++                                                                 |
         |                                                                  |
         O O O OO O O O O O OO O O O O O O OO O O O O O OO O O O O O OO O O O
       0 ++-----------------------------------------------------------------+

	[*] 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" (1770 bytes)

View attachment "reproduce" of type "text/plain" (1187 bytes)

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