Re: [mm] e0e7df8d5b: will-it-scale.per_process_ops -7.3% regression

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On Mon, Sep 23, 2019 at 3:37 AM kernel test robot <rong.a.chen@xxxxxxxxx> wrote:
>
> Greeting,
>
> FYI, we noticed a -7.3% regression of will-it-scale.per_process_ops due to commit:

Most likely this caused by changing struct file layout after adding new field.

>
>
> commit: e0e7df8d5b71bf59ad93fe75e662c929b580d805 ("[PATCH v2] mm: implement write-behind policy for sequential file writes")
> url: https://github.com/0day-ci/linux/commits/Konstantin-Khlebnikov/mm-implement-write-behind-policy-for-sequential-file-writes/20190920-155606
>
>
> 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: 100%
>         mode: process
>         test: open1
>         cpufreq_governor: performance
>
> 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 <rong.a.chen@xxxxxxxxx>
>
>
> 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:
>   gcc-7/performance/x86_64-rhel-7.6/process/100%/debian-x86_64-2019-05-14.cgz/lkp-csl-2ap4/open1/will-it-scale
>
> commit:
>   574cc45397 (" drm main pull for 5.4-rc1")
>   e0e7df8d5b ("mm: implement write-behind policy for sequential file writes")
>
> 574cc4539762561d e0e7df8d5b71bf59ad93fe75e66
> ---------------- ---------------------------
>          %stddev     %change         %stddev
>              \          |                \
>     370456            -7.3%     343238        will-it-scale.per_process_ops
>   71127653            -7.3%   65901758        will-it-scale.workload
>     828565 ± 23%     +66.8%    1381984 ± 23%  cpuidle.C1.time
>       1499            +1.1%       1515        turbostat.Avg_MHz
>     163498 ±  5%     +26.4%     206691 ±  4%  slabinfo.filp.active_slabs
>     163498 ±  5%     +26.4%     206691 ±  4%  slabinfo.filp.num_slabs
>      39055 ±  2%     +17.1%      45720 ±  5%  meminfo.Inactive
>      38615 ±  2%     +17.3%      45291 ±  5%  meminfo.Inactive(anon)
>      51382 ±  3%     +19.6%      61469 ±  7%  meminfo.Mapped
>    5163010 ±  2%     +12.7%    5819765 ±  3%  meminfo.Memused
>    2840181 ±  3%     +22.5%    3478003 ±  5%  meminfo.SUnreclaim
>    2941874 ±  3%     +21.7%    3579791 ±  5%  meminfo.Slab
>      67755 ±  5%     +23.8%      83884 ±  3%  meminfo.max_used_kB
>   79719901           +17.3%   93512842        numa-numastat.node0.local_node
>   79738690           +17.3%   93533079        numa-numastat.node0.numa_hit
>   81987497           +16.6%   95625946        numa-numastat.node1.local_node
>   82018695           +16.6%   95652480        numa-numastat.node1.numa_hit
>   82693483           +15.8%   95762465        numa-numastat.node2.local_node
>   82705924           +15.8%   95789007        numa-numastat.node2.numa_hit
>   80329941           +17.1%   94048289        numa-numastat.node3.local_node
>   80361116           +17.1%   94068512        numa-numastat.node3.numa_hit
>       9678 ±  2%     +17.1%      11334 ±  5%  proc-vmstat.nr_inactive_anon
>      13001 ±  3%     +19.2%      15503 ±  7%  proc-vmstat.nr_mapped
>     738232 ±  4%     +18.5%     875062 ±  2%  proc-vmstat.nr_slab_unreclaimable
>       9678 ±  2%     +17.1%      11334 ±  5%  proc-vmstat.nr_zone_inactive_anon
>       2391 ± 92%     -84.5%     369.50 ± 46%  proc-vmstat.numa_hint_faults
>  3.243e+08           +16.8%  3.789e+08        proc-vmstat.numa_hit
>  3.242e+08           +16.8%  3.788e+08        proc-vmstat.numa_local
>  1.296e+09           +16.8%  1.514e+09        proc-vmstat.pgalloc_normal
>  1.296e+09           +16.8%  1.514e+09        proc-vmstat.pgfree
>     862.61 ±  5%     +37.7%       1188 ±  5%  sched_debug.cfs_rq:/.exec_clock.stddev
>     229663 ± 62%    +113.3%     489907 ± 29%  sched_debug.cfs_rq:/.load.max
>     491.04 ±  4%      -9.5%     444.29 ±  7%  sched_debug.cfs_rq:/.nr_spread_over.min
>     229429 ± 62%    +113.4%     489618 ± 29%  sched_debug.cfs_rq:/.runnable_weight.max
>   -1959962           +36.2%   -2669681        sched_debug.cfs_rq:/.spread0.min
>    1416008 ±  2%     -13.3%    1227494 ±  5%  sched_debug.cpu.avg_idle.avg
>    1240763 ±  8%     -28.2%     891028 ± 18%  sched_debug.cpu.avg_idle.stddev
>     352361 ±  6%     -29.6%     248105 ± 25%  sched_debug.cpu.max_idle_balance_cost.stddev
>     -20.00           +51.0%     -30.21        sched_debug.cpu.nr_uninterruptible.min
>       6618 ± 10%     -20.8%       5240 ±  8%  sched_debug.cpu.ttwu_count.max
>    1452719 ±  4%      +7.2%    1557262 ±  3%  numa-meminfo.node0.MemUsed
>     797565 ±  2%     +20.8%     963538 ±  2%  numa-meminfo.node0.SUnreclaim
>     835343 ±  3%     +19.6%     998867 ±  2%  numa-meminfo.node0.Slab
>     831114 ±  2%     +20.1%     998248 ±  2%  numa-meminfo.node1.SUnreclaim
>     848052           +19.8%    1016069 ±  2%  numa-meminfo.node1.Slab
>    1441558 ±  6%     +15.7%    1668466 ±  3%  numa-meminfo.node2.MemUsed
>     879835 ±  2%     +20.4%    1059441        numa-meminfo.node2.SUnreclaim
>     901359 ±  3%     +20.3%    1084727 ±  2%  numa-meminfo.node2.Slab
>    1446041 ±  5%     +15.5%    1669477 ±  3%  numa-meminfo.node3.MemUsed
>     899442 ±  5%     +23.0%    1106354        numa-meminfo.node3.SUnreclaim
>     924903 ±  5%     +22.1%    1129709        numa-meminfo.node3.Slab
>     198945           +19.8%     238298 ±  2%  numa-vmstat.node0.nr_slab_unreclaimable
>   40181885           +17.3%   47129598        numa-vmstat.node0.numa_hit
>   40163521           +17.3%   47110122        numa-vmstat.node0.numa_local
>     208512           +20.9%     252000 ±  2%  numa-vmstat.node1.nr_slab_unreclaimable
>   41144466           +16.7%   48021716        numa-vmstat.node1.numa_hit
>   41027051           +16.8%   47908675        numa-vmstat.node1.numa_local
>     220763 ±  2%     +21.9%     269115 ±  2%  numa-vmstat.node2.nr_slab_unreclaimable
>   41437805           +16.2%   48167791        numa-vmstat.node2.numa_hit
>   41338581           +16.2%   48054485        numa-vmstat.node2.numa_local
>     225216 ±  2%     +24.7%     280851 ±  2%  numa-vmstat.node3.nr_slab_unreclaimable
>   40385721           +16.9%   47195289        numa-vmstat.node3.numa_hit
>   40268228           +16.9%   47088405        numa-vmstat.node3.numa_local
>      77.00 ± 29%    +494.8%     458.00 ±110%  interrupts.CPU10.RES:Rescheduling_interrupts
>     167.25 ± 65%    +347.8%     749.00 ± 85%  interrupts.CPU103.RES:Rescheduling_interrupts
>     136.50 ± 42%    +309.2%     558.50 ± 85%  interrupts.CPU107.RES:Rescheduling_interrupts
>     132.50 ± 26%    +637.5%     977.25 ± 50%  interrupts.CPU109.RES:Rescheduling_interrupts
>     212.50 ± 51%     -65.2%      74.00 ±  9%  interrupts.CPU115.RES:Rescheduling_interrupts
>     270.25 ± 20%     -77.2%      61.50 ± 10%  interrupts.CPU121.RES:Rescheduling_interrupts
>     184.00 ± 50%     -57.5%      78.25 ± 51%  interrupts.CPU128.RES:Rescheduling_interrupts
>      85.25 ± 38%    +911.4%     862.25 ±135%  interrupts.CPU137.RES:Rescheduling_interrupts
>      72.25 ±  6%    +114.2%     154.75 ± 25%  interrupts.CPU147.RES:Rescheduling_interrupts
>     415.00 ± 75%     -69.8%     125.25 ± 59%  interrupts.CPU15.RES:Rescheduling_interrupts
>     928.25 ± 93%     -89.8%      94.50 ± 50%  interrupts.CPU182.RES:Rescheduling_interrupts
>     359.75 ± 76%     -58.8%     148.25 ± 85%  interrupts.CPU19.RES:Rescheduling_interrupts
>      95.75 ± 30%    +103.9%     195.25 ± 48%  interrupts.CPU45.RES:Rescheduling_interrupts
>      60.25 ±  9%    +270.5%     223.25 ± 93%  interrupts.CPU83.RES:Rescheduling_interrupts
>     906.75 ±136%     -90.5%      85.75 ± 36%  interrupts.CPU85.RES:Rescheduling_interrupts
>     199.25 ± 25%     -52.1%      95.50 ± 43%  interrupts.CPU90.RES:Rescheduling_interrupts
>       5192 ± 34%     +41.5%       7347 ± 24%  interrupts.CPU95.NMI:Non-maskable_interrupts
>       5192 ± 34%     +41.5%       7347 ± 24%  interrupts.CPU95.PMI:Performance_monitoring_interrupts
>       1.75           +26.1%       2.20        perf-stat.i.MPKI
>  7.975e+10            -6.8%  7.435e+10        perf-stat.i.branch-instructions
>  3.782e+08            -5.9%  3.558e+08        perf-stat.i.branch-misses
>      75.36            +0.9       76.29        perf-stat.i.cache-miss-rate%
>  5.484e+08           +18.8%  6.515e+08        perf-stat.i.cache-misses
>  7.276e+08           +17.3%  8.539e+08        perf-stat.i.cache-references
>       1.37            +8.2%       1.48        perf-stat.i.cpi
>  5.701e+11            +0.7%  5.744e+11        perf-stat.i.cpu-cycles
>       1040           -15.2%     882.10        perf-stat.i.cycles-between-cache-misses
>  1.253e+11            -7.2%  1.163e+11        perf-stat.i.dTLB-loads
>  7.443e+10            -7.2%  6.904e+10        perf-stat.i.dTLB-stores
>  3.336e+08           +12.6%  3.755e+08        perf-stat.i.iTLB-load-misses
>    5004598 ±  7%     -60.9%    1954451 ±  6%  perf-stat.i.iTLB-loads
>  4.175e+11            -6.9%  3.887e+11        perf-stat.i.instructions
>       1251           -17.3%       1035        perf-stat.i.instructions-per-iTLB-miss
>       0.73            -7.6%       0.68        perf-stat.i.ipc
>      19.77            -1.5       18.31        perf-stat.i.node-load-miss-rate%
>    5003202 ±  2%     +16.5%    5829006        perf-stat.i.node-load-misses
>   20521507           +28.1%   26283838        perf-stat.i.node-loads
>       1.84            +0.4        2.28        perf-stat.i.node-store-miss-rate%
>    1469703           +29.0%    1895783        perf-stat.i.node-store-misses
>   78304054            +4.0%   81463725        perf-stat.i.node-stores
>       1.74           +26.1%       2.20        perf-stat.overall.MPKI
>      75.37            +0.9       76.30        perf-stat.overall.cache-miss-rate%
>       1.37            +8.2%       1.48        perf-stat.overall.cpi
>       1039           -15.2%     881.41        perf-stat.overall.cycles-between-cache-misses
>       1251           -17.3%       1035        perf-stat.overall.instructions-per-iTLB-miss
>       0.73            -7.6%       0.68        perf-stat.overall.ipc
>      19.59            -1.5       18.14        perf-stat.overall.node-load-miss-rate%
>       1.84            +0.4        2.27        perf-stat.overall.node-store-miss-rate%
>  7.943e+10            -6.8%  7.404e+10        perf-stat.ps.branch-instructions
>  3.767e+08            -5.9%  3.543e+08        perf-stat.ps.branch-misses
>  5.465e+08           +18.8%  6.492e+08        perf-stat.ps.cache-misses
>   7.25e+08           +17.4%  8.508e+08        perf-stat.ps.cache-references
>   5.68e+11            +0.7%  5.722e+11        perf-stat.ps.cpu-cycles
>  1.248e+11            -7.2%  1.158e+11        perf-stat.ps.dTLB-loads
>  7.413e+10            -7.3%  6.874e+10        perf-stat.ps.dTLB-stores
>  3.322e+08           +12.5%  3.739e+08        perf-stat.ps.iTLB-load-misses
>    4986239 ±  7%     -61.0%    1946378 ±  6%  perf-stat.ps.iTLB-loads
>  4.158e+11            -6.9%   3.87e+11        perf-stat.ps.instructions
>    4982520 ±  2%     +16.5%    5803884        perf-stat.ps.node-load-misses
>   20448588           +28.1%   26201547        perf-stat.ps.node-loads
>    1463675           +29.0%    1887791        perf-stat.ps.node-store-misses
>   77979119            +4.0%   81107191        perf-stat.ps.node-stores
>   1.25e+14            -6.8%  1.165e+14        perf-stat.total.instructions
>      10.11            -1.9        8.21        perf-profile.calltrace.cycles-pp.file_free_rcu.rcu_do_batch.rcu_core.__softirqentry_text_start.run_ksoftirqd
>      17.28            -0.8       16.48        perf-profile.calltrace.cycles-pp.close
>       9.41            -0.7        8.69        perf-profile.calltrace.cycles-pp.link_path_walk.path_openat.do_filp_open.do_sys_open.do_syscall_64
>       6.32            -0.7        5.64        perf-profile.calltrace.cycles-pp.do_dentry_open.path_openat.do_filp_open.do_sys_open.do_syscall_64
>       5.27            -0.5        4.72        perf-profile.calltrace.cycles-pp.__fput.task_work_run.exit_to_usermode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe
>      13.96            -0.5       13.49        perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.close
>      13.58            -0.4       13.14        perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.close
>       0.92            -0.3        0.64        perf-profile.calltrace.cycles-pp.__close_fd.__x64_sys_close.do_syscall_64.entry_SYSCALL_64_after_hwframe.close
>       3.10            -0.2        2.86        perf-profile.calltrace.cycles-pp.__x64_sys_close.do_syscall_64.entry_SYSCALL_64_after_hwframe.close
>       2.44            -0.2        2.21        perf-profile.calltrace.cycles-pp.walk_component.link_path_walk.path_openat.do_filp_open.do_sys_open
>       4.02            -0.2        3.80        perf-profile.calltrace.cycles-pp.selinux_inode_permission.security_inode_permission.link_path_walk.path_openat.do_filp_open
>       1.82            -0.2        1.60        perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.open64
>       9.26            -0.2        9.04        perf-profile.calltrace.cycles-pp.task_work_run.exit_to_usermode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.close
>       2.12 ±  2%      -0.2        1.90        perf-profile.calltrace.cycles-pp.lookup_fast.walk_component.link_path_walk.path_openat.do_filp_open
>       1.03 ± 10%      -0.2        0.82        perf-profile.calltrace.cycles-pp.inode_permission.link_path_walk.path_openat.do_filp_open.do_sys_open
>       2.55 ±  2%      -0.2        2.36 ±  3%  perf-profile.calltrace.cycles-pp.security_inode_permission.may_open.path_openat.do_filp_open.do_sys_open
>       1.37            -0.2        1.18        perf-profile.calltrace.cycles-pp.kmem_cache_alloc.getname_flags.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe
>       1.15            -0.2        0.95        perf-profile.calltrace.cycles-pp.ima_file_check.path_openat.do_filp_open.do_sys_open.do_syscall_64
>       1.79            -0.2        1.60        perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.close
>       2.41 ±  3%      -0.2        2.22 ±  3%  perf-profile.calltrace.cycles-pp.selinux_inode_permission.security_inode_permission.may_open.path_openat.do_filp_open
>       2.88            -0.2        2.71        perf-profile.calltrace.cycles-pp.security_file_open.do_dentry_open.path_openat.do_filp_open.do_sys_open
>       2.38            -0.2        2.22        perf-profile.calltrace.cycles-pp.security_file_alloc.__alloc_file.alloc_empty_file.path_openat.do_filp_open
>       4.31            -0.2        4.16        perf-profile.calltrace.cycles-pp.security_inode_permission.link_path_walk.path_openat.do_filp_open.do_sys_open
>       9.93            -0.1        9.80        perf-profile.calltrace.cycles-pp.exit_to_usermode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.close
>       1.63            -0.1        1.50        perf-profile.calltrace.cycles-pp.kmem_cache_alloc.security_file_alloc.__alloc_file.alloc_empty_file.path_openat
>       1.38            -0.1        1.26        perf-profile.calltrace.cycles-pp.__alloc_fd.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe.open64
>       5.16            -0.1        5.04        perf-profile.calltrace.cycles-pp.getname_flags.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe.open64
>       1.13            -0.1        1.02        perf-profile.calltrace.cycles-pp.dput.terminate_walk.path_openat.do_filp_open.do_sys_open
>       2.26            -0.1        2.15        perf-profile.calltrace.cycles-pp.selinux_file_open.security_file_open.do_dentry_open.path_openat.do_filp_open
>       0.63            -0.1        0.52 ±  2%  perf-profile.calltrace.cycles-pp.__check_heap_object.__check_object_size.strncpy_from_user.getname_flags.do_sys_open
>       1.29            -0.1        1.18        perf-profile.calltrace.cycles-pp.lookup_fast.path_openat.do_filp_open.do_sys_open.do_syscall_64
>       1.75            -0.1        1.65        perf-profile.calltrace.cycles-pp.terminate_walk.path_openat.do_filp_open.do_sys_open.do_syscall_64
>       0.67            -0.1        0.58        perf-profile.calltrace.cycles-pp.kmem_cache_free.__fput.task_work_run.exit_to_usermode_loop.do_syscall_64
>       1.22 ±  2%      -0.1        1.12        perf-profile.calltrace.cycles-pp.avc_has_perm_noaudit.selinux_inode_permission.security_inode_permission.link_path_walk.path_openat
>       1.21            -0.1        1.12        perf-profile.calltrace.cycles-pp.fput_many.filp_close.__x64_sys_close.do_syscall_64.entry_SYSCALL_64_after_hwframe
>       0.74            -0.1        0.66        perf-profile.calltrace.cycles-pp.__inode_security_revalidate.selinux_file_open.security_file_open.do_dentry_open.path_openat
>       0.89            -0.1        0.81        perf-profile.calltrace.cycles-pp.inode_security_rcu.selinux_inode_permission.security_inode_permission.may_open.path_openat
>       0.79 ±  4%      -0.1        0.72        perf-profile.calltrace.cycles-pp._raw_spin_lock_irq.task_work_run.exit_to_usermode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe
>       0.76            -0.1        0.70        perf-profile.calltrace.cycles-pp.__inode_security_revalidate.inode_security_rcu.selinux_inode_permission.security_inode_permission.may_open
>       0.67 ±  3%      -0.1        0.61        perf-profile.calltrace.cycles-pp.__d_lookup_rcu.lookup_fast.path_openat.do_filp_open.do_sys_open
>       0.66 ±  3%      -0.1        0.60        perf-profile.calltrace.cycles-pp.inode_permission.may_open.path_openat.do_filp_open.do_sys_open
>       1.02            -0.1        0.96        perf-profile.calltrace.cycles-pp.path_init.path_openat.do_filp_open.do_sys_open.do_syscall_64
>       0.81            -0.1        0.75        perf-profile.calltrace.cycles-pp.task_work_add.fput_many.filp_close.__x64_sys_close.do_syscall_64
>       0.67            -0.0        0.63        perf-profile.calltrace.cycles-pp.rcu_segcblist_enqueue.__call_rcu.task_work_run.exit_to_usermode_loop.do_syscall_64
>       0.78            -0.0        0.74        perf-profile.calltrace.cycles-pp.__slab_free.kmem_cache_free.rcu_do_batch.rcu_core.__softirqentry_text_start
>       0.55            -0.0        0.53        perf-profile.calltrace.cycles-pp.selinux_file_alloc_security.security_file_alloc.__alloc_file.alloc_empty_file.path_openat
>       0.71            +0.1        0.82        perf-profile.calltrace.cycles-pp.memset_erms.kmem_cache_alloc.__alloc_file.alloc_empty_file.path_openat
>       3.38            +0.1        3.50        perf-profile.calltrace.cycles-pp.strncpy_from_user.getname_flags.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe
>       1.66            +0.1        1.78        perf-profile.calltrace.cycles-pp.__call_rcu.task_work_run.exit_to_usermode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe
>       0.70            +0.1        0.84        perf-profile.calltrace.cycles-pp.__virt_addr_valid.__check_object_size.strncpy_from_user.getname_flags.do_sys_open
>       1.81            +0.4        2.23        perf-profile.calltrace.cycles-pp.__check_object_size.strncpy_from_user.getname_flags.do_sys_open.do_syscall_64
>      39.47            +0.7       40.17        perf-profile.calltrace.cycles-pp.do_filp_open.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe.open64
>       0.00            +0.8        0.75        perf-profile.calltrace.cycles-pp.get_page_from_freelist.__alloc_pages_nodemask.new_slab.___slab_alloc.__slab_alloc
>      38.69            +0.8       39.45        perf-profile.calltrace.cycles-pp.path_openat.do_filp_open.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe
>       0.00            +0.8        0.84        perf-profile.calltrace.cycles-pp.__alloc_pages_nodemask.new_slab.___slab_alloc.__slab_alloc.kmem_cache_alloc
>      29.90            +0.9       30.79        perf-profile.calltrace.cycles-pp.__softirqentry_text_start.run_ksoftirqd.smpboot_thread_fn.kthread.ret_from_fork
>      29.90            +0.9       30.79        perf-profile.calltrace.cycles-pp.run_ksoftirqd.smpboot_thread_fn.kthread.ret_from_fork
>      29.87            +0.9       30.76        perf-profile.calltrace.cycles-pp.rcu_do_batch.rcu_core.__softirqentry_text_start.run_ksoftirqd.smpboot_thread_fn
>      29.88            +0.9       30.78        perf-profile.calltrace.cycles-pp.rcu_core.__softirqentry_text_start.run_ksoftirqd.smpboot_thread_fn.kthread
>      29.93            +0.9       30.84        perf-profile.calltrace.cycles-pp.smpboot_thread_fn.kthread.ret_from_fork
>      29.94            +0.9       30.85        perf-profile.calltrace.cycles-pp.ret_from_fork
>      29.94            +0.9       30.85        perf-profile.calltrace.cycles-pp.kthread.ret_from_fork
>       0.89 ± 29%      +0.9        1.81        perf-profile.calltrace.cycles-pp.setup_object_debug.new_slab.___slab_alloc.__slab_alloc.kmem_cache_alloc
>       7.25 ±  3%      +1.1        8.36        perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.free_one_page.__free_pages_ok.unfreeze_partials
>       7.75 ±  3%      +1.1        8.87        perf-profile.calltrace.cycles-pp.__free_pages_ok.unfreeze_partials.put_cpu_partial.kmem_cache_free.rcu_do_batch
>       7.72 ±  3%      +1.1        8.85        perf-profile.calltrace.cycles-pp.free_one_page.__free_pages_ok.unfreeze_partials.put_cpu_partial.kmem_cache_free
>       7.29 ±  3%      +1.1        8.41        perf-profile.calltrace.cycles-pp._raw_spin_lock.free_one_page.__free_pages_ok.unfreeze_partials.put_cpu_partial
>       9.12 ±  3%      +1.1       10.25        perf-profile.calltrace.cycles-pp.kmem_cache_free.rcu_do_batch.rcu_core.__softirqentry_text_start.run_ksoftirqd
>       7.96 ±  3%      +1.1        9.10        perf-profile.calltrace.cycles-pp.put_cpu_partial.kmem_cache_free.rcu_do_batch.rcu_core.__softirqentry_text_start
>       7.92 ±  3%      +1.1        9.07        perf-profile.calltrace.cycles-pp.unfreeze_partials.put_cpu_partial.kmem_cache_free.rcu_do_batch.rcu_core
>       2.38            +1.5        3.83        perf-profile.calltrace.cycles-pp.new_slab.___slab_alloc.__slab_alloc.kmem_cache_alloc.__alloc_file
>      10.53            +1.7       12.19        perf-profile.calltrace.cycles-pp.rcu_cblist_dequeue.rcu_do_batch.rcu_core.__softirqentry_text_start.run_ksoftirqd
>       5.47            +2.2        7.64        perf-profile.calltrace.cycles-pp.kmem_cache_alloc.__alloc_file.alloc_empty_file.path_openat.do_filp_open
>       3.34            +2.2        5.56        perf-profile.calltrace.cycles-pp.___slab_alloc.__slab_alloc.kmem_cache_alloc.__alloc_file.alloc_empty_file
>       3.39            +2.3        5.65        perf-profile.calltrace.cycles-pp.__slab_alloc.kmem_cache_alloc.__alloc_file.alloc_empty_file.path_openat
>      11.39            +2.7       14.08        perf-profile.calltrace.cycles-pp.alloc_empty_file.path_openat.do_filp_open.do_sys_open.do_syscall_64
>      10.91            +2.7       13.63        perf-profile.calltrace.cycles-pp.__alloc_file.alloc_empty_file.path_openat.do_filp_open.do_sys_open
>      10.62            -2.1        8.54        perf-profile.children.cycles-pp.file_free_rcu
>      17.31            -0.8       16.51        perf-profile.children.cycles-pp.close
>       9.47            -0.7        8.74        perf-profile.children.cycles-pp.link_path_walk
>       6.37            -0.7        5.68        perf-profile.children.cycles-pp.do_dentry_open
>       5.48            -0.6        4.90        perf-profile.children.cycles-pp.__fput
>       6.49            -0.4        6.08        perf-profile.children.cycles-pp.selinux_inode_permission
>       6.95            -0.3        6.60        perf-profile.children.cycles-pp.security_inode_permission
>       3.48            -0.3        3.15        perf-profile.children.cycles-pp.lookup_fast
>       2.38            -0.3        2.09        perf-profile.children.cycles-pp.entry_SYSCALL_64
>       1.74 ±  5%      -0.3        1.46        perf-profile.children.cycles-pp.inode_permission
>       0.94            -0.3        0.66        perf-profile.children.cycles-pp.__close_fd
>       3.10            -0.2        2.86        perf-profile.children.cycles-pp.__x64_sys_close
>       2.27 ±  2%      -0.2        2.04 ±  2%  perf-profile.children.cycles-pp.dput
>       2.47            -0.2        2.24        perf-profile.children.cycles-pp.walk_component
>       2.21 ±  2%      -0.2        1.98        perf-profile.children.cycles-pp.___might_sleep
>       2.24            -0.2        2.02        perf-profile.children.cycles-pp.syscall_return_via_sysret
>       9.32            -0.2        9.12        perf-profile.children.cycles-pp.task_work_run
>       1.17            -0.2        0.97        perf-profile.children.cycles-pp.ima_file_check
>       1.99            -0.2        1.80        perf-profile.children.cycles-pp.__inode_security_revalidate
>       2.92            -0.2        2.73        perf-profile.children.cycles-pp.security_file_open
>       0.56            -0.2        0.38        perf-profile.children.cycles-pp.selinux_task_getsecid
>       0.69            -0.2        0.51        perf-profile.children.cycles-pp.security_task_getsecid
>       2.40            -0.2        2.24        perf-profile.children.cycles-pp.security_file_alloc
>       0.20 ±  4%      -0.1        0.06 ± 11%  perf-profile.children.cycles-pp.try_module_get
>       1.44            -0.1        1.31        perf-profile.children.cycles-pp.__might_sleep
>      10.01            -0.1        9.88        perf-profile.children.cycles-pp.exit_to_usermode_loop
>       1.46            -0.1        1.33        perf-profile.children.cycles-pp.inode_security_rcu
>       1.00            -0.1        0.87        perf-profile.children.cycles-pp._cond_resched
>       5.20            -0.1        5.08        perf-profile.children.cycles-pp.getname_flags
>       1.05            -0.1        0.93        perf-profile.children.cycles-pp.__fsnotify_parent
>       1.42            -0.1        1.30        perf-profile.children.cycles-pp.fsnotify
>       1.41            -0.1        1.29        perf-profile.children.cycles-pp.__alloc_fd
>       2.29            -0.1        2.18        perf-profile.children.cycles-pp.selinux_file_open
>       0.64            -0.1        0.53        perf-profile.children.cycles-pp.__check_heap_object
>       1.42 ±  2%      -0.1        1.31 ±  2%  perf-profile.children.cycles-pp.irq_exit
>       1.80            -0.1        1.69        perf-profile.children.cycles-pp.terminate_walk
>       0.33            -0.1        0.23        perf-profile.children.cycles-pp.file_ra_state_init
>       0.65 ±  3%      -0.1        0.56        perf-profile.children.cycles-pp.generic_permission
>       1.23            -0.1        1.15        perf-profile.children.cycles-pp.fput_many
>       0.83 ±  3%      -0.1        0.74        perf-profile.children.cycles-pp._raw_spin_lock_irq
>       0.53            -0.1        0.45 ±  2%  perf-profile.children.cycles-pp.rcu_all_qs
>       0.58 ±  5%      -0.1        0.51 ±  2%  perf-profile.children.cycles-pp.mntput_no_expire
>       0.75            -0.1        0.69        perf-profile.children.cycles-pp.lockref_put_or_lock
>       1.03            -0.1        0.97        perf-profile.children.cycles-pp.path_init
>       0.84            -0.1        0.78        perf-profile.children.cycles-pp.task_work_add
>       0.14 ±  3%      -0.1        0.08 ±  5%  perf-profile.children.cycles-pp.ima_file_free
>       0.26 ±  7%      -0.1        0.21 ±  2%  perf-profile.children.cycles-pp.path_get
>       0.83            -0.0        0.78        perf-profile.children.cycles-pp.__slab_free
>       0.62            -0.0        0.58        perf-profile.children.cycles-pp.percpu_counter_add_batch
>       0.67            -0.0        0.63        perf-profile.children.cycles-pp.rcu_segcblist_enqueue
>       0.20 ± 11%      -0.0        0.16 ±  2%  perf-profile.children.cycles-pp.mntget
>       0.22 ±  4%      -0.0        0.19 ±  3%  perf-profile.children.cycles-pp.get_unused_fd_flags
>       0.10 ± 14%      -0.0        0.07 ± 10%  perf-profile.children.cycles-pp.close@plt
>       0.34 ±  2%      -0.0        0.31        perf-profile.children.cycles-pp.lockref_get
>       0.24            -0.0        0.21 ±  2%  perf-profile.children.cycles-pp.__x64_sys_open
>       0.11 ±  8%      -0.0        0.08 ± 10%  perf-profile.children.cycles-pp.putname
>       0.18 ±  2%      -0.0        0.16        perf-profile.children.cycles-pp.should_failslab
>       0.55            -0.0        0.53        perf-profile.children.cycles-pp.selinux_file_alloc_security
>       0.21 ±  3%      -0.0        0.19 ±  2%  perf-profile.children.cycles-pp.expand_files
>       0.07 ±  6%      -0.0        0.05        perf-profile.children.cycles-pp.module_put
>       0.12            -0.0        0.10 ±  4%  perf-profile.children.cycles-pp.security_file_free
>       0.17            -0.0        0.15 ±  3%  perf-profile.children.cycles-pp.find_next_zero_bit
>       0.07 ±  5%      -0.0        0.06        perf-profile.children.cycles-pp.memset
>       0.07 ±  5%      -0.0        0.06        perf-profile.children.cycles-pp.__mutex_init
>       0.10            -0.0        0.09        perf-profile.children.cycles-pp.mntput
>       0.12            +0.0        0.13 ±  3%  perf-profile.children.cycles-pp.__list_del_entry_valid
>       0.12 ±  3%      +0.0        0.14 ±  3%  perf-profile.children.cycles-pp.discard_slab
>       0.08            +0.0        0.10 ±  4%  perf-profile.children.cycles-pp.kick_process
>       0.04 ± 57%      +0.0        0.07 ±  7%  perf-profile.children.cycles-pp.native_irq_return_iret
>       0.12 ±  4%      +0.0        0.15 ±  3%  perf-profile.children.cycles-pp.blkcg_maybe_throttle_current
>       1.31            +0.0        1.34        perf-profile.children.cycles-pp.memset_erms
>       0.40            +0.0        0.44        perf-profile.children.cycles-pp.lockref_get_not_dead
>       0.07 ±  6%      +0.0        0.11 ±  3%  perf-profile.children.cycles-pp.rcu_segcblist_pend_cbs
>       0.01 ±173%      +0.0        0.06 ± 11%  perf-profile.children.cycles-pp.native_write_msr
>       0.27 ±  6%      +0.1        0.33 ± 10%  perf-profile.children.cycles-pp.ktime_get
>       0.16 ±  5%      +0.1        0.22 ±  4%  perf-profile.children.cycles-pp.get_partial_node
>       0.01 ±173%      +0.1        0.07 ± 30%  perf-profile.children.cycles-pp.perf_mux_hrtimer_handler
>       0.00            +0.1        0.07 ±  5%  perf-profile.children.cycles-pp.____fput
>       0.05            +0.1        0.15 ±  3%  perf-profile.children.cycles-pp.__mod_zone_page_state
>       0.12 ± 16%      +0.1        0.23 ± 10%  perf-profile.children.cycles-pp.ktime_get_update_offsets_now
>       0.05 ±  8%      +0.1        0.16 ±  2%  perf-profile.children.cycles-pp.legitimize_links
>       1.71            +0.1        1.83        perf-profile.children.cycles-pp.__call_rcu
>       3.40            +0.1        3.52        perf-profile.children.cycles-pp.strncpy_from_user
>       0.30 ±  2%      +0.1        0.43 ±  2%  perf-profile.children.cycles-pp.locks_remove_posix
>       0.72            +0.1        0.86        perf-profile.children.cycles-pp.__virt_addr_valid
>       0.08            +0.1        0.23 ±  3%  perf-profile.children.cycles-pp._raw_spin_lock_irqsave
>       0.84 ±  9%      +0.2        1.02 ±  8%  perf-profile.children.cycles-pp.hrtimer_interrupt
>       0.15 ±  3%      +0.2        0.38        perf-profile.children.cycles-pp.check_stack_object
>       0.65            +0.4        1.05        perf-profile.children.cycles-pp.setup_object_debug
>       0.36            +0.4        0.76        perf-profile.children.cycles-pp.get_page_from_freelist
>       1.90            +0.4        2.31        perf-profile.children.cycles-pp.__check_object_size
>       0.39            +0.4        0.84        perf-profile.children.cycles-pp.__alloc_pages_nodemask
>      39.52            +0.7       40.22        perf-profile.children.cycles-pp.do_filp_open
>      38.84            +0.8       39.59        perf-profile.children.cycles-pp.path_openat
>      31.27            +0.8       32.05        perf-profile.children.cycles-pp.rcu_core
>      31.26            +0.8       32.03        perf-profile.children.cycles-pp.rcu_do_batch
>      31.31            +0.8       32.09        perf-profile.children.cycles-pp.__softirqentry_text_start
>      29.90            +0.9       30.79        perf-profile.children.cycles-pp.run_ksoftirqd
>      29.93            +0.9       30.84        perf-profile.children.cycles-pp.smpboot_thread_fn
>      29.94            +0.9       30.85        perf-profile.children.cycles-pp.kthread
>      29.94            +0.9       30.85        perf-profile.children.cycles-pp.ret_from_fork
>      10.63 ±  2%      +1.0       11.61        perf-profile.children.cycles-pp.kmem_cache_free
>       8.45 ±  3%      +1.1        9.57        perf-profile.children.cycles-pp._raw_spin_lock
>       7.96 ±  3%      +1.1        9.11        perf-profile.children.cycles-pp.__free_pages_ok
>       7.93 ±  3%      +1.2        9.08        perf-profile.children.cycles-pp.free_one_page
>       8.19 ±  3%      +1.2        9.36        perf-profile.children.cycles-pp.put_cpu_partial
>       8.15 ±  3%      +1.2        9.32        perf-profile.children.cycles-pp.unfreeze_partials
>       7.59 ±  3%      +1.3        8.89        perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath
>      11.12            +1.7       12.83        perf-profile.children.cycles-pp.rcu_cblist_dequeue
>       2.88            +1.7        4.61        perf-profile.children.cycles-pp.new_slab
>       8.73            +1.8       10.54        perf-profile.children.cycles-pp.kmem_cache_alloc
>       3.34            +2.2        5.56        perf-profile.children.cycles-pp.___slab_alloc
>       3.39            +2.3        5.65        perf-profile.children.cycles-pp.__slab_alloc
>      11.45            +2.7       14.12        perf-profile.children.cycles-pp.alloc_empty_file
>      10.98            +2.7       13.70        perf-profile.children.cycles-pp.__alloc_file
>      10.53            -2.1        8.47        perf-profile.self.cycles-pp.file_free_rcu
>       2.37            -0.3        2.05        perf-profile.self.cycles-pp.kmem_cache_alloc
>       1.43            -0.3        1.17        perf-profile.self.cycles-pp.strncpy_from_user
>       0.50            -0.2        0.26 ±  2%  perf-profile.self.cycles-pp.__close_fd
>       2.22            -0.2        2.00        perf-profile.self.cycles-pp.syscall_return_via_sysret
>       2.07 ±  2%      -0.2        1.86        perf-profile.self.cycles-pp.___might_sleep
>       1.01 ±  7%      -0.2        0.82        perf-profile.self.cycles-pp.inode_permission
>       1.13            -0.2        0.96 ±  2%  perf-profile.self.cycles-pp.entry_SYSCALL_64
>       3.10            -0.2        2.93        perf-profile.self.cycles-pp.selinux_inode_permission
>       0.52            -0.2        0.35        perf-profile.self.cycles-pp.selinux_task_getsecid
>       1.33            -0.1        1.18 ±  2%  perf-profile.self.cycles-pp.do_dentry_open
>       1.55            -0.1        1.42        perf-profile.self.cycles-pp.kmem_cache_free
>       1.55            -0.1        1.43        perf-profile.self.cycles-pp.link_path_walk
>       0.17 ±  4%      -0.1        0.04 ± 57%  perf-profile.self.cycles-pp.try_module_get
>       1.35            -0.1        1.24        perf-profile.self.cycles-pp.fsnotify
>       0.96            -0.1        0.85        perf-profile.self.cycles-pp.__fsnotify_parent
>       1.25 ±  2%      -0.1        1.14        perf-profile.self.cycles-pp.__might_sleep
>       0.87 ±  2%      -0.1        0.78 ±  2%  perf-profile.self.cycles-pp.lookup_fast
>       0.79 ±  2%      -0.1        0.70 ±  2%  perf-profile.self.cycles-pp.do_syscall_64
>       1.02            -0.1        0.93        perf-profile.self.cycles-pp.do_sys_open
>       0.30            -0.1        0.22        perf-profile.self.cycles-pp.file_ra_state_init
>       0.58            -0.1        0.50        perf-profile.self.cycles-pp.__check_heap_object
>       0.80 ±  3%      -0.1        0.72        perf-profile.self.cycles-pp._raw_spin_lock_irq
>       0.59 ±  2%      -0.1        0.52 ±  2%  perf-profile.self.cycles-pp.generic_permission
>       1.17            -0.1        1.09        perf-profile.self.cycles-pp.__fput
>       0.68            -0.1        0.60        perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe
>       0.84            -0.1        0.77        perf-profile.self.cycles-pp.__inode_security_revalidate
>       0.73            -0.1        0.66        perf-profile.self.cycles-pp.task_work_add
>       0.39            -0.1        0.32 ±  2%  perf-profile.self.cycles-pp.rcu_all_qs
>       0.54 ±  5%      -0.1        0.47 ±  2%  perf-profile.self.cycles-pp.mntput_no_expire
>       0.50 ±  6%      -0.1        0.44 ±  4%  perf-profile.self.cycles-pp.dput
>       0.46            -0.1        0.40        perf-profile.self.cycles-pp._cond_resched
>       0.93            -0.1        0.88 ±  2%  perf-profile.self.cycles-pp.close
>       0.11 ±  4%      -0.1        0.06 ± 11%  perf-profile.self.cycles-pp.ima_file_free
>       0.83            -0.1        0.77        perf-profile.self.cycles-pp.__slab_free
>       0.61            -0.1        0.56        perf-profile.self.cycles-pp.__alloc_fd
>       0.87            -0.1        0.82        perf-profile.self.cycles-pp._raw_spin_lock
>       0.69            -0.0        0.64        perf-profile.self.cycles-pp.lockref_put_or_lock
>       0.67            -0.0        0.62        perf-profile.self.cycles-pp.rcu_segcblist_enqueue
>       0.46            -0.0        0.41        perf-profile.self.cycles-pp.do_filp_open
>       0.56            -0.0        0.51        perf-profile.self.cycles-pp.percpu_counter_add_batch
>       1.05 ±  2%      -0.0        1.01        perf-profile.self.cycles-pp.path_openat
>       0.28 ±  2%      -0.0        0.24 ±  4%  perf-profile.self.cycles-pp.security_file_open
>       0.94 ±  2%      -0.0        0.90        perf-profile.self.cycles-pp.open64
>       0.21 ±  6%      -0.0        0.17 ±  4%  perf-profile.self.cycles-pp.get_unused_fd_flags
>       0.17 ± 13%      -0.0        0.14 ±  3%  perf-profile.self.cycles-pp.mntget
>       0.39            -0.0        0.35        perf-profile.self.cycles-pp.fput_many
>       0.37            -0.0        0.34        perf-profile.self.cycles-pp.getname_flags
>       0.43            -0.0        0.41        perf-profile.self.cycles-pp.path_init
>       0.33            -0.0        0.30 ±  2%  perf-profile.self.cycles-pp.lockref_get
>       0.20 ±  2%      -0.0        0.17        perf-profile.self.cycles-pp.filp_close
>       0.52            -0.0        0.50        perf-profile.self.cycles-pp.selinux_file_alloc_security
>       0.22            -0.0        0.20 ±  2%  perf-profile.self.cycles-pp.__x64_sys_open
>       0.28 ±  2%      -0.0        0.26        perf-profile.self.cycles-pp.inode_security_rcu
>       0.19 ±  4%      -0.0        0.17 ±  2%  perf-profile.self.cycles-pp.expand_files
>       0.09 ±  9%      -0.0        0.07 ±  6%  perf-profile.self.cycles-pp.putname
>       0.10            -0.0        0.08 ±  5%  perf-profile.self.cycles-pp.security_file_free
>       0.15 ±  3%      -0.0        0.14 ±  3%  perf-profile.self.cycles-pp.find_next_zero_bit
>       0.12 ±  3%      -0.0        0.11 ±  4%  perf-profile.self.cycles-pp.nd_jump_root
>       0.08            -0.0        0.07        perf-profile.self.cycles-pp.fd_install
>       0.06            -0.0        0.05        perf-profile.self.cycles-pp.path_get
>       0.12            +0.0        0.13 ±  3%  perf-profile.self.cycles-pp.__list_del_entry_valid
>       0.07 ±  5%      +0.0        0.09        perf-profile.self.cycles-pp.get_partial_node
>       0.12 ±  3%      +0.0        0.14 ±  3%  perf-profile.self.cycles-pp.discard_slab
>       0.11            +0.0        0.13 ±  3%  perf-profile.self.cycles-pp.blkcg_maybe_throttle_current
>       0.06            +0.0        0.08 ±  5%  perf-profile.self.cycles-pp.kick_process
>       0.28 ±  2%      +0.0        0.30        perf-profile.self.cycles-pp.__x64_sys_close
>       0.04 ± 57%      +0.0        0.07 ±  7%  perf-profile.self.cycles-pp.native_irq_return_iret
>       0.39            +0.0        0.42        perf-profile.self.cycles-pp.lockref_get_not_dead
>       0.53            +0.0        0.57        perf-profile.self.cycles-pp.exit_to_usermode_loop
>       0.06 ±  7%      +0.0        0.10 ±  4%  perf-profile.self.cycles-pp.rcu_segcblist_pend_cbs
>       0.01 ±173%      +0.0        0.06 ± 11%  perf-profile.self.cycles-pp.native_write_msr
>       0.28            +0.0        0.33        perf-profile.self.cycles-pp.terminate_walk
>       0.27 ±  5%      +0.1        0.32 ± 11%  perf-profile.self.cycles-pp.ktime_get
>       0.00            +0.1        0.05 ±  9%  perf-profile.self.cycles-pp._raw_spin_lock_irqsave
>       0.43 ±  5%      +0.1        0.49 ±  3%  perf-profile.self.cycles-pp.security_inode_permission
>       0.00            +0.1        0.06 ±  6%  perf-profile.self.cycles-pp.____fput
>       0.00            +0.1        0.08        perf-profile.self.cycles-pp.__alloc_pages_nodemask
>       0.05            +0.1        0.15 ±  3%  perf-profile.self.cycles-pp.__mod_zone_page_state
>       0.25 ±  3%      +0.1        0.35 ±  2%  perf-profile.self.cycles-pp.locks_remove_posix
>       0.12 ± 17%      +0.1        0.23 ± 11%  perf-profile.self.cycles-pp.ktime_get_update_offsets_now
>       0.14            +0.1        0.25        perf-profile.self.cycles-pp.setup_object_debug
>       0.93            +0.1        1.04        perf-profile.self.cycles-pp.__call_rcu
>       0.46            +0.1        0.58        perf-profile.self.cycles-pp.__check_object_size
>       0.13 ±  3%      +0.1        0.26 ±  3%  perf-profile.self.cycles-pp.get_page_from_freelist
>       0.00            +0.1        0.13 ±  3%  perf-profile.self.cycles-pp.legitimize_links
>       0.68            +0.1        0.81        perf-profile.self.cycles-pp.__virt_addr_valid
>       0.40 ± 11%      +0.2        0.58        perf-profile.self.cycles-pp.may_open
>       0.12            +0.2        0.31        perf-profile.self.cycles-pp.check_stack_object
>       0.90            +0.3        1.22        perf-profile.self.cycles-pp.task_work_run
>       0.30            +0.4        0.73        perf-profile.self.cycles-pp.___slab_alloc
>       2.88            +0.7        3.59        perf-profile.self.cycles-pp.__alloc_file
>       2.27            +1.1        3.38        perf-profile.self.cycles-pp.new_slab
>       7.59 ±  3%      +1.3        8.89        perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath
>      11.04            +1.7       12.73        perf-profile.self.cycles-pp.rcu_cblist_dequeue
>
>
>
>                             will-it-scale.per_process_ops
>
>   385000 +-+----------------------------------------------------------------+
>          |     .+                     .+.      .+                           |
>   380000 +-+.++  :              +.++.+   +.++.+  :                          |
>   375000 +-+     :             +                 :                          |
>          |        +.+   .+.++.+                   ++.      .+.+.+ .+.+.+ .+.|
>   370000 +-+         +.+                             +.+.++      +      +   |
>   365000 +-+                                                                |
>          |                                                                  |
>   360000 +-+                                                                |
>   355000 +-+                                                                |
>          |                                                                  |
>   350000 +-+                                                                |
>   345000 O-+ OO O O OO O O OO O O O                                         |
>          | O                       O O O O OO O O                           |
>   340000 +-+----------------------------------------------------------------+
>
>
>                                 will-it-scale.workload
>
>   7.4e+07 +-+---------------------------------------------------------------+
>           |     .+                     .+      .+                           |
>   7.3e+07 +-++.+  :              ++.+.+  +.+.++  :                          |
>   7.2e+07 +-+     :             +                :                          |
>           |        ++.   .++.+.+                  +.+       +.+.+.++.+.+. +.|
>   7.1e+07 +-+         +.+                            +.+.+.+             +  |
>     7e+07 +-+                                                               |
>           |                                                                 |
>   6.9e+07 +-+                                                               |
>   6.8e+07 +-+                                                               |
>           |                                                                 |
>   6.7e+07 +-+           O        O                                          |
>   6.6e+07 O-OO O O OO O   OO O O  O O   O  O  O                             |
>           |                           O  O   O  O                           |
>   6.5e+07 +-+---------------------------------------------------------------+
>
>
> [*] 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,
> Rong Chen
>





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