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Date:   Sun, 22 Nov 2020 22:42:26 +0800
From:   kernel test robot <oliver.sang@...el.com>
To:     Michal Kubecek <mkubecek@...e.cz>
Cc:     Alexander Viro <viro@...iv.linux.org.uk>,
        linux-fsdevel@...r.kernel.org, Jens Axboe <axboe@...nel.dk>,
        linux-kernel@...r.kernel.org, 0day robot <lkp@...el.com>,
        lkp@...ts.01.org, ying.huang@...el.com, feng.tang@...el.com,
        zhengjun.xing@...el.com
Subject: [eventfd]  5cb13cb023:  will-it-scale.per_thread_ops -6.3% regression


Greeting,

FYI, we noticed a -6.3% regression of will-it-scale.per_thread_ops due to commit:


commit: 5cb13cb023c0caccfa3e0fcf5e206ea1246c476f ("[PATCH] eventfd: convert to ->write_iter()")
url: https://github.com/0day-ci/linux/commits/Michal-Kubecek/eventfd-convert-to-write_iter/20201118-172416
base: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git 0fa8ee0d9ab95c9350b8b84574824d9a384a9f7d

in testcase: will-it-scale
on test machine: 192 threads Intel(R) Xeon(R) Platinum 9242 CPU @ 2.30GHz with 192G memory
with following parameters:

	nr_task: 50%
	mode: thread
	test: eventfd1
	cpufreq_governor: performance
	ucode: 0x5003003

test-description: Will It Scale takes a testcase and runs it from 1 through to n parallel copies to see if the testcase will scale. It builds both a process and threads based test in order to see any differences between the two.
test-url: https://github.com/antonblanchard/will-it-scale



If you fix the issue, kindly add following tag
Reported-by: kernel test robot <oliver.sang@...el.com>


Details are as below:
-------------------------------------------------------------------------------------------------->


To reproduce:

        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        bin/lkp install job.yaml  # job file is attached in this email
        bin/lkp run     job.yaml

=========================================================================================
compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase/ucode:
  gcc-9/performance/x86_64-rhel-8.3/thread/50%/debian-10.4-x86_64-20200603.cgz/lkp-csl-2ap2/eventfd1/will-it-scale/0x5003003

commit: 
  0fa8ee0d9a ("Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input")
  5cb13cb023 ("eventfd: convert to ->write_iter()")

0fa8ee0d9ab95c93 5cb13cb023c0caccfa3e0fcf5e2 
---------------- --------------------------- 
         %stddev     %change         %stddev
             \          |                \  
   2598249            -6.3%    2434898        will-it-scale.per_thread_ops
 2.494e+08            -6.3%  2.338e+08        will-it-scale.workload
      5624 ±  3%     -11.8%       4961 ±  7%  boot-time.idle
    195795 ± 30%    +122.8%     436164 ± 53%  numa-numastat.node2.numa_hit
      6231 ± 22%     -34.0%       4112 ± 36%  sched_debug.cpu.ttwu_local.max
 1.017e+10 ±107%    +131.5%  2.354e+10 ± 37%  cpuidle.C1E.time
  30461075 ± 67%     +70.3%   51869908 ± 22%  cpuidle.C1E.usage
      1274 ±  3%     -12.1%       1120 ±  8%  slabinfo.file_lock_cache.active_objs
      1274 ±  3%     -12.1%       1120 ±  8%  slabinfo.file_lock_cache.num_objs
     79975 ±  8%     +12.6%      90014 ± 12%  meminfo.Active
     79975 ±  8%     +12.6%      90014 ± 12%  meminfo.Active(anon)
     93866 ±  7%     +11.2%     104419 ± 11%  meminfo.Shmem
     19966 ±  8%     +12.6%      22476 ± 12%  proc-vmstat.nr_active_anon
     88671            -2.2%      86683        proc-vmstat.nr_anon_pages
     92029            -2.0%      90156        proc-vmstat.nr_inactive_anon
     19966 ±  8%     +12.6%      22476 ± 12%  proc-vmstat.nr_zone_active_anon
     92029            -2.0%      90156        proc-vmstat.nr_zone_inactive_anon
    564.00 ± 27%     -58.8%     232.50 ± 39%  numa-vmstat.node0.nr_page_table_pages
     11326 ± 20%     -48.1%       5878 ±  5%  numa-vmstat.node0.nr_slab_reclaimable
     23195 ±  6%     -23.3%      17788 ±  9%  numa-vmstat.node0.nr_slab_unreclaimable
    687301 ± 22%     -27.9%     495794 ±  4%  numa-vmstat.node0.numa_hit
     13611           +32.0%      17965 ± 11%  numa-vmstat.node1.nr_slab_unreclaimable
     19094 ±  9%     +13.0%      21572 ± 11%  numa-vmstat.node3.nr_active_anon
      7278 ± 32%     +54.1%      11218 ± 27%  numa-vmstat.node3.nr_slab_reclaimable
     19094 ±  9%     +13.0%      21572 ± 11%  numa-vmstat.node3.nr_zone_active_anon
     45304 ± 20%     -48.1%      23515 ±  5%  numa-meminfo.node0.KReclaimable
      2253 ± 27%     -58.1%     943.75 ± 37%  numa-meminfo.node0.PageTables
     45304 ± 20%     -48.1%      23515 ±  5%  numa-meminfo.node0.SReclaimable
     92781 ±  6%     -23.3%      71159 ±  9%  numa-meminfo.node0.SUnreclaim
    138086 ±  6%     -31.4%      94675 ±  8%  numa-meminfo.node0.Slab
     54446           +32.0%      71864 ± 11%  numa-meminfo.node1.SUnreclaim
     76276 ± 10%     +13.1%      86270 ± 11%  numa-meminfo.node3.Active
     76276 ± 10%     +13.1%      86270 ± 11%  numa-meminfo.node3.Active(anon)
     29121 ± 32%     +54.1%      44886 ± 27%  numa-meminfo.node3.KReclaimable
     29121 ± 32%     +54.1%      44886 ± 27%  numa-meminfo.node3.SReclaimable
      8.01 ±  9%      -8.0        0.00        perf-profile.calltrace.cycles-pp.eventfd_write.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe
      0.91 ±  9%      +0.3        1.19 ±  9%  perf-profile.calltrace.cycles-pp.syscall_return_via_sysret.__libc_write
      0.00            +0.8        0.84 ± 11%  perf-profile.calltrace.cycles-pp.copy_user_enhanced_fast_string.copyin._copy_from_iter_full.eventfd_write.new_sync_write
      0.00            +1.1        1.05 ± 11%  perf-profile.calltrace.cycles-pp.__might_fault._copy_from_iter_full.eventfd_write.new_sync_write.vfs_write
      0.00            +1.1        1.13 ± 11%  perf-profile.calltrace.cycles-pp.copy_user_generic_unrolled.copyin._copy_from_iter_full.eventfd_write.new_sync_write
      0.00            +1.1        1.15 ± 11%  perf-profile.calltrace.cycles-pp.iov_iter_advance._copy_from_iter_full.eventfd_write.new_sync_write.vfs_write
      0.00            +1.3        1.26 ± 12%  perf-profile.calltrace.cycles-pp._raw_spin_lock_irq.eventfd_write.new_sync_write.vfs_write.ksys_write
      0.00            +2.5        2.46 ± 11%  perf-profile.calltrace.cycles-pp.copyin._copy_from_iter_full.eventfd_write.new_sync_write.vfs_write
      0.00            +5.5        5.50 ± 11%  perf-profile.calltrace.cycles-pp._copy_from_iter_full.eventfd_write.new_sync_write.vfs_write.ksys_write
      0.00            +8.7        8.70 ± 11%  perf-profile.calltrace.cycles-pp.eventfd_write.new_sync_write.vfs_write.ksys_write.do_syscall_64
      0.00           +10.1       10.11 ± 11%  perf-profile.calltrace.cycles-pp.new_sync_write.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe
      0.16 ± 11%      +0.2        0.32 ± 11%  perf-profile.children.cycles-pp.iov_iter_init
      0.00            +1.2        1.15 ± 11%  perf-profile.children.cycles-pp.iov_iter_advance
      0.00            +2.5        2.51 ± 11%  perf-profile.children.cycles-pp.copyin
      0.00            +5.7        5.66 ± 11%  perf-profile.children.cycles-pp._copy_from_iter_full
      0.00           +10.2       10.22 ± 11%  perf-profile.children.cycles-pp.new_sync_write
      0.12 ±  6%      +0.1        0.23 ± 10%  perf-profile.self.cycles-pp.iov_iter_init
      0.00            +0.3        0.33 ± 12%  perf-profile.self.cycles-pp.copyin
      0.00            +0.9        0.91 ± 12%  perf-profile.self.cycles-pp._copy_from_iter_full
      0.00            +1.1        1.08 ± 11%  perf-profile.self.cycles-pp.iov_iter_advance
      0.00            +1.2        1.24 ± 11%  perf-profile.self.cycles-pp.new_sync_write
   9.3e+10            +3.7%  9.647e+10        perf-stat.i.branch-instructions
      1.02            -0.1        0.92        perf-stat.i.branch-miss-rate%
 9.438e+08            -6.5%  8.828e+08        perf-stat.i.branch-misses
      2364            -1.9%       2319        perf-stat.i.context-switches
      0.65            -3.9%       0.63        perf-stat.i.cpi
 1.288e+11            +2.4%  1.319e+11        perf-stat.i.dTLB-loads
     82066            -2.0%      80394        perf-stat.i.dTLB-store-misses
 8.791e+10            +3.2%  9.076e+10        perf-stat.i.dTLB-stores
 9.303e+08            -3.5%   8.98e+08        perf-stat.i.iTLB-load-misses
 4.486e+11            +4.1%  4.672e+11        perf-stat.i.instructions
    482.90            +8.1%     522.07        perf-stat.i.instructions-per-iTLB-miss
      1.53            +4.2%       1.59        perf-stat.i.ipc
      1612            +3.1%       1662        perf-stat.i.metric.M/sec
      0.02 ±  3%      -6.9%       0.02 ±  2%  perf-stat.overall.MPKI
      1.01            -0.1        0.92        perf-stat.overall.branch-miss-rate%
      0.65            -4.1%       0.63        perf-stat.overall.cpi
      0.00            -0.0        0.00        perf-stat.overall.dTLB-store-miss-rate%
    482.17            +7.9%     520.31        perf-stat.overall.instructions-per-iTLB-miss
      1.53            +4.2%       1.60        perf-stat.overall.ipc
    542437           +11.1%     602836        perf-stat.overall.path-length
 9.268e+10            +3.7%  9.614e+10        perf-stat.ps.branch-instructions
 9.404e+08            -6.5%  8.798e+08        perf-stat.ps.branch-misses
      2357            -2.1%       2308        perf-stat.ps.context-switches
 1.283e+11            +2.5%  1.315e+11        perf-stat.ps.dTLB-loads
     82039            -2.0%      80437        perf-stat.ps.dTLB-store-misses
  8.76e+10            +3.3%  9.045e+10        perf-stat.ps.dTLB-stores
 9.271e+08            -3.5%   8.95e+08        perf-stat.ps.iTLB-load-misses
  4.47e+11            +4.2%  4.656e+11        perf-stat.ps.instructions
 1.353e+14            +4.1%  1.409e+14        perf-stat.total.instructions
     17923 ± 57%     +68.7%      30238 ± 23%  softirqs.CPU118.SCHED
     13351 ±  5%     -24.1%      10129 ±  7%  softirqs.CPU120.RCU
     14869 ± 19%    +128.3%      33952 ±  5%  softirqs.CPU120.SCHED
     10695 ±  7%     +21.5%      12999 ±  7%  softirqs.CPU122.RCU
     32252 ± 13%     -62.5%      12110 ± 36%  softirqs.CPU122.SCHED
     12027 ±  2%     -12.6%      10510        softirqs.CPU129.RCU
     22702 ± 20%     +35.5%      30756 ± 16%  softirqs.CPU129.SCHED
     12806 ±  8%     -17.5%      10564 ±  7%  softirqs.CPU13.RCU
     13637 ±  6%     -23.8%      10394 ± 13%  softirqs.CPU130.RCU
     13342 ± 33%    +139.9%      32014 ± 15%  softirqs.CPU130.SCHED
     22307 ± 29%     -41.9%      12958 ± 37%  softirqs.CPU133.SCHED
     12617 ± 10%     -11.6%      11152 ±  3%  softirqs.CPU135.RCU
     36856 ± 41%     -47.8%      19244 ± 50%  softirqs.CPU15.SCHED
     14467 ± 11%     -21.6%      11339 ±  3%  softirqs.CPU167.RCU
     20118 ± 40%     +54.6%      31101 ± 31%  softirqs.CPU167.SCHED
     11933 ±  7%     -11.5%      10560        softirqs.CPU183.RCU
     16156 ± 34%     +55.0%      25048 ± 35%  softirqs.CPU184.SCHED
     11912 ±  4%     -12.2%      10456 ±  5%  softirqs.CPU188.RCU
     19513 ± 14%     +35.2%      26375 ±  2%  softirqs.CPU188.SCHED
     11382 ±  5%     +24.0%      14114 ±  8%  softirqs.CPU24.RCU
     29259 ±  8%     -60.3%      11611 ± 21%  softirqs.CPU24.SCHED
     14178 ±  3%     -26.6%      10407 ±  7%  softirqs.CPU26.RCU
     12171 ± 30%    +171.3%      33015 ± 11%  softirqs.CPU26.SCHED
     11088 ±  6%     +24.4%      13789 ±  3%  softirqs.CPU34.RCU
     31141 ± 12%     -57.6%      13193 ± 42%  softirqs.CPU34.SCHED
     12838 ±  7%     -17.6%      10584 ±  7%  softirqs.CPU37.RCU
     20138 ± 28%     +51.2%      30444 ± 17%  softirqs.CPU38.SCHED
     13059 ±  3%     -13.7%      11272 ± 10%  softirqs.CPU46.RCU
     13511 ±  5%     -10.1%      12147 ±  4%  softirqs.CPU68.RCU
     19446 ± 16%     +22.9%      23906 ± 14%  softirqs.CPU68.SCHED
     13235 ±  4%     -11.3%      11745 ±  8%  softirqs.CPU76.RCU
     12459 ± 30%     +50.0%      18685 ± 26%  softirqs.CPU76.SCHED
     25126 ±  9%     -25.7%      18676 ±  5%  softirqs.CPU92.SCHED
    598522 ± 13%     -13.2%     519288 ±  6%  interrupts.CAL:Function_call_interrupts
      3490 ± 39%     -38.2%       2155 ± 11%  interrupts.CPU100.CAL:Function_call_interrupts
      2778 ±  4%     -18.0%       2278 ± 17%  interrupts.CPU101.CAL:Function_call_interrupts
    877.50 ±  6%     -32.5%     592.25 ± 28%  interrupts.CPU101.TLB:TLB_shootdowns
      5050 ± 34%     +58.5%       8005 ±  7%  interrupts.CPU105.NMI:Non-maskable_interrupts
      5050 ± 34%     +58.5%       8005 ±  7%  interrupts.CPU105.PMI:Performance_monitoring_interrupts
    250.25 ± 27%     -56.1%     109.75 ± 41%  interrupts.CPU107.RES:Rescheduling_interrupts
      3223 ± 48%    +100.3%       6455 ± 22%  interrupts.CPU108.NMI:Non-maskable_interrupts
      3223 ± 48%    +100.3%       6455 ± 22%  interrupts.CPU108.PMI:Performance_monitoring_interrupts
    917.50 ± 27%     +38.4%       1269 ±  8%  interrupts.CPU109.TLB:TLB_shootdowns
      3957 ± 48%     +79.9%       7120 ± 34%  interrupts.CPU112.NMI:Non-maskable_interrupts
      3957 ± 48%     +79.9%       7120 ± 34%  interrupts.CPU112.PMI:Performance_monitoring_interrupts
      4300 ± 34%     +70.2%       7318 ± 16%  interrupts.CPU117.NMI:Non-maskable_interrupts
      4300 ± 34%     +70.2%       7318 ± 16%  interrupts.CPU117.PMI:Performance_monitoring_interrupts
      2802 ± 10%     -29.6%       1972 ± 15%  interrupts.CPU120.CAL:Function_call_interrupts
    197.00 ± 10%     -78.0%      43.25 ± 49%  interrupts.CPU120.RES:Rescheduling_interrupts
    912.75 ± 37%     -65.5%     314.50 ± 46%  interrupts.CPU120.TLB:TLB_shootdowns
      2411 ± 15%     +22.4%       2951 ±  3%  interrupts.CPU122.CAL:Function_call_interrupts
     57.50 ± 68%    +264.8%     209.75 ± 25%  interrupts.CPU122.RES:Rescheduling_interrupts
    537.50 ± 77%    +151.3%       1351 ± 17%  interrupts.CPU122.TLB:TLB_shootdowns
      3344 ± 83%    +114.7%       7182 ± 18%  interrupts.CPU126.NMI:Non-maskable_interrupts
      3344 ± 83%    +114.7%       7182 ± 18%  interrupts.CPU126.PMI:Performance_monitoring_interrupts
      2849 ±  4%     -18.3%       2327 ±  8%  interrupts.CPU13.CAL:Function_call_interrupts
    185.25 ± 22%     -53.4%      86.25 ± 45%  interrupts.CPU13.RES:Rescheduling_interrupts
    823.00 ± 35%     -44.4%     457.50 ± 26%  interrupts.CPU13.TLB:TLB_shootdowns
      3044 ±  6%     -32.5%       2055 ± 23%  interrupts.CPU130.CAL:Function_call_interrupts
    208.25 ± 20%     -74.5%      53.00 ± 77%  interrupts.CPU130.RES:Rescheduling_interrupts
      1140 ± 21%     -67.4%     371.75 ± 78%  interrupts.CPU130.TLB:TLB_shootdowns
      2652 ±  5%     +13.7%       3014 ±  6%  interrupts.CPU133.CAL:Function_call_interrupts
    856.50 ± 20%     +66.1%       1422 ± 18%  interrupts.CPU133.TLB:TLB_shootdowns
    113.50 ± 40%     +70.9%     194.00 ± 30%  interrupts.CPU134.RES:Rescheduling_interrupts
      3169 ±  7%     -20.6%       2515 ± 16%  interrupts.CPU135.CAL:Function_call_interrupts
      1282 ± 20%     -30.9%     886.00 ± 23%  interrupts.CPU135.TLB:TLB_shootdowns
      2802 ±  8%     -16.8%       2331 ± 10%  interrupts.CPU136.CAL:Function_call_interrupts
      3251 ±  8%     -14.8%       2770 ±  6%  interrupts.CPU139.CAL:Function_call_interrupts
      1169 ± 23%     -41.3%     686.00 ± 25%  interrupts.CPU149.TLB:TLB_shootdowns
      9462 ±112%     -72.9%       2565 ± 30%  interrupts.CPU16.CAL:Function_call_interrupts
      8144 ±  7%     -38.6%       4998 ± 58%  interrupts.CPU160.NMI:Non-maskable_interrupts
      8144 ±  7%     -38.6%       4998 ± 58%  interrupts.CPU160.PMI:Performance_monitoring_interrupts
      4721 ± 48%     +63.2%       7707 ± 14%  interrupts.CPU173.NMI:Non-maskable_interrupts
      4721 ± 48%     +63.2%       7707 ± 14%  interrupts.CPU173.PMI:Performance_monitoring_interrupts
      4629 ± 41%     +61.3%       7468 ± 14%  interrupts.CPU18.NMI:Non-maskable_interrupts
      4629 ± 41%     +61.3%       7468 ± 14%  interrupts.CPU18.PMI:Performance_monitoring_interrupts
      2802 ± 33%     +97.6%       5537 ± 28%  interrupts.CPU181.NMI:Non-maskable_interrupts
      2802 ± 33%     +97.6%       5537 ± 28%  interrupts.CPU181.PMI:Performance_monitoring_interrupts
      2775 ±  3%     -10.8%       2475 ±  9%  interrupts.CPU183.CAL:Function_call_interrupts
      5696 ± 34%     +40.8%       8018 ±  6%  interrupts.CPU186.NMI:Non-maskable_interrupts
      5696 ± 34%     +40.8%       8018 ±  6%  interrupts.CPU186.PMI:Performance_monitoring_interrupts
      1044 ± 25%     -49.6%     526.50 ± 56%  interrupts.CPU189.TLB:TLB_shootdowns
      3090 ±  6%     -13.2%       2683 ±  2%  interrupts.CPU191.CAL:Function_call_interrupts
      3039 ±  6%     -19.8%       2437 ±  6%  interrupts.CPU21.CAL:Function_call_interrupts
     66.00 ± 40%    +216.3%     208.75 ± 21%  interrupts.CPU24.RES:Rescheduling_interrupts
    881.50 ± 47%     +64.3%       1448 ±  7%  interrupts.CPU24.TLB:TLB_shootdowns
      3371 ±  9%     -36.5%       2142 ± 20%  interrupts.CPU26.CAL:Function_call_interrupts
    212.50 ± 11%     -79.6%      43.25 ± 83%  interrupts.CPU26.RES:Rescheduling_interrupts
      1282 ± 29%     -63.5%     468.50 ± 48%  interrupts.CPU26.TLB:TLB_shootdowns
     50.50 ± 57%    +294.6%     199.25 ± 31%  interrupts.CPU34.RES:Rescheduling_interrupts
    649.25 ± 30%    +126.1%       1467 ± 21%  interrupts.CPU34.TLB:TLB_shootdowns
      5367 ± 69%     -49.7%       2697 ±  5%  interrupts.CPU36.CAL:Function_call_interrupts
      2874 ±  6%     -29.0%       2041 ± 20%  interrupts.CPU37.CAL:Function_call_interrupts
    129.00 ± 42%     -62.0%      49.00 ± 78%  interrupts.CPU37.RES:Rescheduling_interrupts
    977.00 ± 11%     -62.2%     369.75 ± 61%  interrupts.CPU37.TLB:TLB_shootdowns
    824.00 ± 25%     +32.7%       1093 ±  8%  interrupts.CPU40.TLB:TLB_shootdowns
      4495 ± 59%     +77.6%       7984 ±  7%  interrupts.CPU44.NMI:Non-maskable_interrupts
      4495 ± 59%     +77.6%       7984 ±  7%  interrupts.CPU44.PMI:Performance_monitoring_interrupts
    806.50 ± 12%     +42.4%       1148 ± 17%  interrupts.CPU5.TLB:TLB_shootdowns
      3147 ± 10%     -21.0%       2485 ± 13%  interrupts.CPU51.CAL:Function_call_interrupts
    691.50 ± 50%     +62.4%       1122 ± 11%  interrupts.CPU53.TLB:TLB_shootdowns
      3478 ± 11%     -21.8%       2721 ± 15%  interrupts.CPU60.CAL:Function_call_interrupts
      2938 ± 23%    +157.7%       7571 ± 15%  interrupts.CPU67.NMI:Non-maskable_interrupts
      2938 ± 23%    +157.7%       7571 ± 15%  interrupts.CPU67.PMI:Performance_monitoring_interrupts
      2923 ±  6%     -12.1%       2568 ±  6%  interrupts.CPU68.CAL:Function_call_interrupts
      3390 ±  6%     -14.5%       2897 ±  6%  interrupts.CPU70.CAL:Function_call_interrupts
      1192 ± 13%     -21.6%     935.50 ± 10%  interrupts.CPU84.TLB:TLB_shootdowns
    105.25 ± 27%     +43.9%     151.50 ± 18%  interrupts.CPU92.RES:Rescheduling_interrupts
    794.75 ± 42%     +59.1%       1264 ± 28%  interrupts.CPU93.TLB:TLB_shootdowns
      2841 ± 20%     -28.3%       2037 ± 23%  interrupts.CPU98.CAL:Function_call_interrupts
      3327 ± 18%     -26.3%       2451 ± 12%  interrupts.CPU99.CAL:Function_call_interrupts


                                                                                
                             will-it-scale.per_thread_ops                       
                                                                                
  2.62e+06 +----------------------------------------------------------------+   
   2.6e+06 |-+               .+.++.+                                  .+.++.|   
           |              +.+       +                         +.+.++.+      |   
  2.58e+06 |.++.+. .++.+.+           + .+.+. +.+.+ .+.+ .+.+. :             |   
  2.56e+06 |-+    +                   +     +     +    +     +              |   
  2.54e+06 |-+                                                              |   
  2.52e+06 |-+                                                              |   
           |                                                                |   
   2.5e+06 |-+                                                              |   
  2.48e+06 |-+                                                              |   
  2.46e+06 |-+                                                              |   
  2.44e+06 |-+            O   O OO O OO                                     |   
           | OO O O O       O           O O OO O OO O                       |   
  2.42e+06 |-+       O O O                                                  |   
   2.4e+06 +----------------------------------------------------------------+   
                                                                                
                                                                                                                                                                
                                will-it-scale.workload                          
                                                                                
   2.5e+08 +----------------------------------------------------------------+   
           |               .+      +                             .+ .+.+    |   
  2.48e+08 |-+ .+.    .+.++         +    .+.         .+       +.+  +        |   
  2.46e+08 |.++   +.++               ++.+   ++.+.++.+  +.+.+.+              |   
           |                                                                |   
  2.44e+08 |-+                                                              |   
  2.42e+08 |-+                                                              |   
           |                                                                |   
   2.4e+08 |-+                                                              |   
  2.38e+08 |-+                                                              |   
           |                                                                |   
  2.36e+08 |-+                O                                             |   
  2.34e+08 |-+      O     O     OO O OO                                     |   
           | OO O O         O           O O OO O OO O                       |   
  2.32e+08 +----------------------------------------------------------------+   
                                                                                
                                                                                
[*] 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,
Oliver Sang


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