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Date:	Thu, 26 Jun 2014 09:42:19 +0800
From:	Fengguang Wu <fengguang.wu@...el.com>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:	Dave Hansen <dave.hansen@...el.com>,
	LKML <linux-kernel@...r.kernel.org>, lkp@...org,
	Jet Chen <jet.chen@...el.com>
Subject: [rcu] e552592e038: +39.2% vm-scalability.throughput, +19.7%
 turbostat.Pkg_W

Hi Paul,

We noticed the below changes on

git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git urgent.2014.06.21a
commit e552592e0383bc72e35eb21a9fabd84ad873cff1 ("rcu: Reduce overhead of cond_resched() checks for RCU")

Test case: brickland3/vm-scalability/300s-anon-w-seq-mt-64G

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
  89766370 ~ 6%     +39.2%   1.25e+08 ~ 9%  TOTAL vm-scalability.throughput
 1.317e+09 ~ 8%     -45.2%   7.21e+08 ~10%  TOTAL cpuidle.C6-IVT-4S.time
         9 ~ 6%     +58.8%         15 ~ 5%  TOTAL vmstat.procs.r
     12.27 ~14%     +44.7%      17.74 ~12%  TOTAL turbostat.%c1
     20538 ~ 4%     -21.3%      16155 ~ 4%  TOTAL cpuidle.C6-IVT-4S.usage
     77.66 ~ 2%     -15.0%      65.98 ~ 5%  TOTAL turbostat.%c6
       260 ~ 2%     -16.4%        217 ~ 4%  TOTAL vmstat.memory.buff
     51920 ~ 7%     -14.3%      44489 ~ 5%  TOTAL numa-meminfo.node0.PageTables
     53822 ~ 5%     -15.6%      45404 ~ 6%  TOTAL proc-vmstat.nr_page_table_pages
    215196 ~ 5%     -15.7%     181409 ~ 6%  TOTAL meminfo.PageTables
     52182 ~ 4%     -15.2%      44271 ~ 6%  TOTAL proc-vmstat.nr_anon_transparent_hugepages
     12881 ~ 7%     -13.4%      11150 ~ 5%  TOTAL numa-vmstat.node0.nr_page_table_pages
 1.068e+08 ~ 4%     -15.2%   90492587 ~ 6%  TOTAL meminfo.AnonHugePages
  26983682 ~ 4%     -14.5%   23071571 ~ 6%  TOTAL proc-vmstat.nr_anon_pages
 1.079e+08 ~ 4%     -14.5%   92289854 ~ 6%  TOTAL meminfo.AnonPages
 1.083e+08 ~ 4%     -14.2%   92897630 ~ 6%  TOTAL meminfo.Active(anon)
 1.084e+08 ~ 4%     -14.2%   92970821 ~ 6%  TOTAL meminfo.Active
  27067517 ~ 4%     -14.2%   23232055 ~ 6%  TOTAL proc-vmstat.nr_active_anon
     52565 ~ 3%     -12.0%      46273 ~ 3%  TOTAL proc-vmstat.nr_shmem
     52499 ~ 3%     -12.0%      46215 ~ 3%  TOTAL proc-vmstat.nr_inactive_anon
    214447 ~ 3%     -10.5%     191862 ~ 2%  TOTAL meminfo.Shmem
    214197 ~ 3%     -10.5%     191636 ~ 2%  TOTAL meminfo.Inactive(anon)
      2779 ~13%     -53.5%       1291 ~19%  TOTAL time.involuntary_context_switches
      1156 ~ 8%     +82.3%       2108 ~ 9%  TOTAL time.percent_of_cpu_this_job_got
     11.58 ~10%     -44.4%       6.45 ~ 9%  TOTAL time.elapsed_time
      1008 ~ 5%     +79.5%       1810 ~ 7%  TOTAL time.voluntary_context_switches
      9.23 ~ 8%     +72.8%      15.95 ~ 8%  TOTAL turbostat.%c0
     12679 ~ 8%     +70.8%      21659 ~ 9%  TOTAL vmstat.system.in
       145 ~ 7%     +60.6%        234 ~ 8%  TOTAL vmstat.io.bo
      3721 ~ 7%     +35.2%       5029 ~ 8%  TOTAL vmstat.system.cs
           ~ 1%     +26.7%            ~ 5%  TOTAL turbostat.Cor_W
           ~ 2%     +21.2%            ~ 3%  TOTAL turbostat.RAM_W
           ~ 1%     +19.7%            ~ 4%  TOTAL turbostat.Pkg_W


All test cases:

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
  89766370 ~ 6%     +39.2%   1.25e+08 ~ 9%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
  89766370 ~ 6%     +39.2%   1.25e+08 ~ 9%  TOTAL vm-scalability.throughput

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
      0.36 ~ 1%      -9.8%       0.32 ~ 2%  lkp-nex05/will-it-scale/open1
      0.36 ~ 1%      -9.8%       0.32 ~ 2%  TOTAL will-it-scale.scalability

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
    466616 ~ 1%      -2.6%     454267 ~ 1%  lkp-nex05/will-it-scale/open1
    511556 ~ 0%      -1.3%     504762 ~ 0%  lkp-snb01/will-it-scale/signal1
    978172 ~ 0%      -2.0%     959029 ~ 0%  TOTAL will-it-scale.per_process_ops

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
   1381706 ~ 1%      +2.3%    1413190 ~ 0%  lkp-snb01/will-it-scale/futex2
    299558 ~ 0%      -1.8%     294312 ~ 0%  lkp-snb01/will-it-scale/signal1
   1681264 ~ 1%      +1.6%    1707503 ~ 0%  TOTAL will-it-scale.per_thread_ops

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
     84771 ~ 2%    +575.2%     572390 ~ 1%  lkp-nex05/will-it-scale/open1
     84771 ~ 2%    +575.2%     572390 ~ 1%  TOTAL slabinfo.kmalloc-256.active_objs

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
      2656 ~ 2%    +573.8%      17896 ~ 1%  lkp-nex05/will-it-scale/open1
      2656 ~ 2%    +573.8%      17896 ~ 1%  TOTAL slabinfo.kmalloc-256.num_slabs

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
     85011 ~ 2%    +573.7%     572697 ~ 1%  lkp-nex05/will-it-scale/open1
     85011 ~ 2%    +573.7%     572697 ~ 1%  TOTAL slabinfo.kmalloc-256.num_objs

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
      2656 ~ 2%    +573.8%      17896 ~ 1%  lkp-nex05/will-it-scale/open1
      2656 ~ 2%    +573.8%      17896 ~ 1%  TOTAL slabinfo.kmalloc-256.active_slabs

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
   1533310 ~ 2%     -83.7%     250652 ~ 1%  lkp-nex05/will-it-scale/open1
    289790 ~ 4%     -67.2%      94913 ~ 4%  lkp-snb01/will-it-scale/futex2
    204559 ~ 4%     -62.6%      76449 ~ 7%  lkp-snb01/will-it-scale/signal1
   2027660 ~ 3%     -79.2%     422015 ~ 3%  TOTAL softirqs.RCU

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
     47388 ~ 5%    +147.5%     117277 ~ 1%  lkp-nex05/will-it-scale/open1
     47388 ~ 5%    +147.5%     117277 ~ 1%  TOTAL numa-meminfo.node0.SUnreclaim

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
     11836 ~ 5%    +149.4%      29520 ~ 2%  lkp-nex05/will-it-scale/open1
     11836 ~ 5%    +149.4%      29520 ~ 2%  TOTAL numa-vmstat.node0.nr_slab_unreclaimable

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
     97325 ~ 0%    +125.2%     219188 ~ 1%  lkp-nex05/will-it-scale/open1
     97325 ~ 0%    +125.2%     219188 ~ 1%  TOTAL meminfo.SUnreclaim

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
     24304 ~ 0%    +125.0%      54686 ~ 0%  lkp-nex05/will-it-scale/open1
     24304 ~ 0%    +125.0%      54686 ~ 0%  TOTAL proc-vmstat.nr_slab_unreclaimable

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
      6364 ~ 8%    +117.8%      13864 ~ 3%  lkp-nex05/will-it-scale/open1
      6364 ~ 8%    +117.8%      13864 ~ 3%  TOTAL numa-vmstat.node1.nr_slab_unreclaimable

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
     25487 ~ 8%    +115.7%      54988 ~ 4%  lkp-nex05/will-it-scale/open1
     25487 ~ 8%    +115.7%      54988 ~ 4%  TOTAL numa-meminfo.node1.SUnreclaim

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
     63365 ~ 5%    +110.5%     133379 ~ 1%  lkp-nex05/will-it-scale/open1
     63365 ~ 5%    +110.5%     133379 ~ 1%  TOTAL numa-meminfo.node0.Slab

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
      6335 ~11%     +83.5%      11625 ~ 4%  lkp-nex05/will-it-scale/open1
      6335 ~11%     +83.5%      11625 ~ 4%  TOTAL numa-vmstat.node3.nr_slab_unreclaimable

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
     25370 ~11%     +82.1%      46193 ~ 5%  lkp-nex05/will-it-scale/open1
     25370 ~11%     +82.1%      46193 ~ 5%  TOTAL numa-meminfo.node3.SUnreclaim

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
    140861 ~ 0%     +86.5%     262647 ~ 1%  lkp-nex05/will-it-scale/open1
    140861 ~ 0%     +86.5%     262647 ~ 1%  TOTAL meminfo.Slab

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
 1.317e+09 ~ 8%     -45.2%   7.21e+08 ~10%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
 1.317e+09 ~ 8%     -45.2%   7.21e+08 ~10%  TOTAL cpuidle.C6-IVT-4S.time

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
     38627 ~ 5%     +77.8%      68673 ~ 5%  lkp-nex05/will-it-scale/open1
     38627 ~ 5%     +77.8%      68673 ~ 5%  TOTAL numa-meminfo.node1.Slab

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
      1.10 ~ 5%     +70.3%       1.88 ~ 0%  lkp-nex05/will-it-scale/open1
      1.10 ~ 5%     +70.3%       1.88 ~ 0%  TOTAL perf-profile.cpu-cycles.setup_object.isra.47.__slab_alloc.kmem_cache_alloc.get_empty_filp.path_openat

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
      2.54 ~ 6%     -37.7%       1.58 ~ 5%  lkp-snb01/will-it-scale/futex2
      2.54 ~ 6%     -37.7%       1.58 ~ 5%  TOTAL perf-profile.cpu-cycles.get_futex_key.futex_wait_setup.futex_wait.do_futex.sys_futex

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
         9 ~ 6%     +58.8%         15 ~ 5%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
         9 ~ 6%     +58.8%         15 ~ 5%  TOTAL vmstat.procs.r

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
     12.27 ~14%     +44.7%      17.74 ~12%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
     12.27 ~14%     +44.7%      17.74 ~12%  TOTAL turbostat.%c1

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
    661578 ~ 2%     -33.4%     440676 ~ 0%  lkp-nex05/will-it-scale/open1
    661578 ~ 2%     -33.4%     440676 ~ 0%  TOTAL cpuidle.C3-NHM.usage

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
     39783 ~ 9%     +50.5%      59862 ~ 5%  lkp-nex05/will-it-scale/open1
     39783 ~ 9%     +50.5%      59862 ~ 5%  TOTAL numa-meminfo.node3.Slab

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
      2.03 ~ 8%     +34.1%       2.73 ~ 2%  lkp-nex05/will-it-scale/open1
      2.03 ~ 8%     +34.1%       2.73 ~ 2%  TOTAL perf-profile.cpu-cycles.rcu_nocb_kthread.kthread.ret_from_fork

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
     20538 ~ 4%     -21.3%      16155 ~ 4%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
     20538 ~ 4%     -21.3%      16155 ~ 4%  TOTAL cpuidle.C6-IVT-4S.usage

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
      1.07 ~ 4%     -17.3%       0.88 ~ 8%  lkp-nex05/will-it-scale/open1
      1.07 ~ 4%     -17.3%       0.88 ~ 8%  TOTAL perf-profile.cpu-cycles.__alloc_fd.get_unused_fd_flags.do_sys_open.sys_open.system_call_fastpath

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
     77.66 ~ 2%     -15.0%      65.98 ~ 5%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
     77.66 ~ 2%     -15.0%      65.98 ~ 5%  TOTAL turbostat.%c6

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
      0.96 ~ 3%     -14.8%       0.82 ~ 5%  lkp-snb01/will-it-scale/futex2
      0.96 ~ 3%     -14.8%       0.82 ~ 5%  TOTAL perf-profile.cpu-cycles.put_page.get_futex_key.futex_wait_setup.futex_wait.do_futex

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
      1.08 ~ 4%     +22.4%       1.33 ~ 2%  lkp-nex05/will-it-scale/open1
      1.08 ~ 4%     +22.4%       1.33 ~ 2%  TOTAL perf-profile.cpu-cycles.memset.get_empty_filp.path_openat.do_filp_open.do_sys_open

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
       260 ~ 2%     -16.4%        217 ~ 4%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
       260 ~ 2%     -16.4%        217 ~ 4%  TOTAL vmstat.memory.buff

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
     51920 ~ 7%     -14.3%      44489 ~ 5%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
     51920 ~ 7%     -14.3%      44489 ~ 5%  TOTAL numa-meminfo.node0.PageTables

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
     53822 ~ 5%     -15.6%      45404 ~ 6%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
     53822 ~ 5%     -15.6%      45404 ~ 6%  TOTAL proc-vmstat.nr_page_table_pages

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
    215196 ~ 5%     -15.7%     181409 ~ 6%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
    215196 ~ 5%     -15.7%     181409 ~ 6%  TOTAL meminfo.PageTables

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
     52182 ~ 4%     -15.2%      44271 ~ 6%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
     52182 ~ 4%     -15.2%      44271 ~ 6%  TOTAL proc-vmstat.nr_anon_transparent_hugepages

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
     12881 ~ 7%     -13.4%      11150 ~ 5%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
     12881 ~ 7%     -13.4%      11150 ~ 5%  TOTAL numa-vmstat.node0.nr_page_table_pages

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
 1.068e+08 ~ 4%     -15.2%   90492587 ~ 6%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
 1.068e+08 ~ 4%     -15.2%   90492587 ~ 6%  TOTAL meminfo.AnonHugePages

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
  26983682 ~ 4%     -14.5%   23071571 ~ 6%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
  26983682 ~ 4%     -14.5%   23071571 ~ 6%  TOTAL proc-vmstat.nr_anon_pages

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
      1.83 ~ 6%     +19.3%       2.18 ~ 5%  lkp-nex05/will-it-scale/open1
      1.83 ~ 6%     +19.3%       2.18 ~ 5%  TOTAL perf-profile.cpu-cycles.get_empty_filp.path_openat.do_filp_open.do_sys_open.sys_open

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
 1.079e+08 ~ 4%     -14.5%   92289854 ~ 6%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
 1.079e+08 ~ 4%     -14.5%   92289854 ~ 6%  TOTAL meminfo.AnonPages

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
    254457 ~ 2%     -12.2%     223290 ~ 1%  lkp-nex05/will-it-scale/open1
    254457 ~ 2%     -12.2%     223290 ~ 1%  TOTAL softirqs.SCHED

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
 1.083e+08 ~ 4%     -14.2%   92897630 ~ 6%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
 1.083e+08 ~ 4%     -14.2%   92897630 ~ 6%  TOTAL meminfo.Active(anon)

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
 1.084e+08 ~ 4%     -14.2%   92970821 ~ 6%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
 1.084e+08 ~ 4%     -14.2%   92970821 ~ 6%  TOTAL meminfo.Active

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
  27067517 ~ 4%     -14.2%   23232055 ~ 6%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
  27067517 ~ 4%     -14.2%   23232055 ~ 6%  TOTAL proc-vmstat.nr_active_anon

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
     52565 ~ 3%     -12.0%      46273 ~ 3%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
     52565 ~ 3%     -12.0%      46273 ~ 3%  TOTAL proc-vmstat.nr_shmem

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
     52499 ~ 3%     -12.0%      46215 ~ 3%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
     52499 ~ 3%     -12.0%      46215 ~ 3%  TOTAL proc-vmstat.nr_inactive_anon

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
    214447 ~ 3%     -10.5%     191862 ~ 2%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
    214447 ~ 3%     -10.5%     191862 ~ 2%  TOTAL meminfo.Shmem

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
    214197 ~ 3%     -10.5%     191636 ~ 2%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
    214197 ~ 3%     -10.5%     191636 ~ 2%  TOTAL meminfo.Inactive(anon)

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
    681017 ~ 0%     +10.3%     751298 ~ 0%  lkp-nex05/will-it-scale/open1
    681017 ~ 0%     +10.3%     751298 ~ 0%  TOTAL numa-meminfo.node0.MemUsed

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
      2779 ~13%     -53.5%       1291 ~19%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
     65403 ~ 4%     -10.8%      58332 ~ 0%  lkp-nex05/will-it-scale/open1
      9638 ~ 2%    +109.9%      20234 ~ 1%  lkp-snb01/will-it-scale/futex2
     10665 ~ 2%    +103.8%      21733 ~ 2%  lkp-snb01/will-it-scale/signal1
     88486 ~ 4%     +14.8%     101591 ~ 1%  TOTAL time.involuntary_context_switches

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
      1156 ~ 8%     +82.3%       2108 ~ 9%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
      1156 ~ 8%     +82.3%       2108 ~ 9%  TOTAL time.percent_of_cpu_this_job_got

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
     11.58 ~10%     -44.4%       6.45 ~ 9%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
     11.58 ~10%     -44.4%       6.45 ~ 9%  TOTAL time.elapsed_time

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
      1008 ~ 5%     +79.5%       1810 ~ 7%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
      1008 ~ 5%     +79.5%       1810 ~ 7%  TOTAL time.voluntary_context_switches

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
      9.23 ~ 8%     +72.8%      15.95 ~ 8%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
      9.23 ~ 8%     +72.8%      15.95 ~ 8%  TOTAL turbostat.%c0

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
     12679 ~ 8%     +70.8%      21659 ~ 9%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
     12679 ~ 8%     +70.8%      21659 ~ 9%  TOTAL vmstat.system.in

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
       145 ~ 7%     +60.6%        234 ~ 8%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
       145 ~ 7%     +60.6%        234 ~ 8%  TOTAL vmstat.io.bo

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
      3721 ~ 7%     +35.2%       5029 ~ 8%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
      5805 ~ 2%     -55.9%       2563 ~ 0%  lkp-nex05/will-it-scale/open1
       897 ~ 1%     +10.8%        994 ~ 1%  lkp-snb01/will-it-scale/futex2
       908 ~ 0%     +11.7%       1014 ~ 0%  lkp-snb01/will-it-scale/signal1
     11332 ~ 3%     -15.3%       9601 ~ 4%  TOTAL vmstat.system.cs

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
           ~ 1%     +26.7%            ~ 5%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
           ~ 1%     +26.7%            ~ 5%  TOTAL turbostat.Cor_W

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
           ~ 2%     +21.2%            ~ 3%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
           ~ 2%     +21.2%            ~ 3%  TOTAL turbostat.RAM_W

      v3.16-rc1  e552592e0383bc72e35eb21a9  
---------------  -------------------------  
           ~ 1%     +19.7%            ~ 4%  brickland3/vm-scalability/300s-anon-w-seq-mt-64G
           ~ 1%     +19.7%            ~ 4%  TOTAL turbostat.Pkg_W


Legend:
	~XX%    - stddev percent
	[+-]XX% - change percent


                                 vmstat.system.cs

  6000 *+-*------*--*-------------------------------------------------------+
       |      *.       *...  .*..                                           |
  5500 ++                  *.    *                                          |
       |                                                                    |
  5000 ++                                                                   |
       |                                                                    |
  4500 ++                                                                   |
       |                                                                    |
  4000 ++                                                                   |
       |                                                                    |
  3500 ++                                                                   |
       |                                                                    |
  3000 ++                                                                   |
       |                                                                    |
  2500 O+-O---O--O--O--O---O--O--O---O--O--O--O---O--O--O---O--O--O--O---O--O


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


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

Thanks,
Fengguang
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