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Date:   Fri, 21 May 2021 16:44:05 +0800
From:   kernel test robot <oliver.sang@...el.com>
To:     "Paul E. McKenney" <paulmck@...nel.org>
Cc:     John Stultz <john.stultz@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Stephen Boyd <sboyd@...nel.org>,
        Jonathan Corbet <corbet@....net>,
        Mark Rutland <Mark.Rutland@....com>,
        Marc Zyngier <maz@...nel.org>, Andi Kleen <ak@...ux.intel.com>,
        Xing Zhengjun <zhengjun.xing@...ux.intel.com>,
        Feng Tang <feng.tang@...el.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux Memory Management List <linux-mm@...ck.org>,
        lkp@...ts.01.org, lkp@...el.com, ying.huang@...el.com,
        zhengjun.xing@...el.com
Subject: [clocksource]  df29d3cd5a:  stress-ng.clock.ops_per_sec 4.5%
 improvement



Greeting,

FYI, we noticed a 4.5% improvement of stress-ng.clock.ops_per_sec due to commit:


commit: df29d3cd5ad4d400767caa199ec7c0ecbab10fc8 ("clocksource: Limit number of CPUs checked for clock synchronization")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master


in testcase: stress-ng
on test machine: 96 threads 2 sockets Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz with 512G memory
with following parameters:

	nr_threads: 100%
	disk: 1HDD
	testtime: 60s
	class: interrupt
	test: clock
	cpufreq_governor: performance
	ucode: 0x5003006






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 split-job --compatible job.yaml  # generate the yaml file for lkp run
        bin/lkp run                    generated-yaml-file

=========================================================================================
class/compiler/cpufreq_governor/disk/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime/ucode:
  interrupt/gcc-9/performance/1HDD/x86_64-rhel-8.3/100%/debian-10.4-x86_64-20200603.cgz/lkp-csl-2sp7/clock/stress-ng/60s/0x5003006

commit: 
  b509a98006 ("clocksource: Check per-CPU clock synchronization when marked unstable")
  df29d3cd5a ("clocksource: Limit number of CPUs checked for clock synchronization")

b509a9800648b24a df29d3cd5ad4d400767caa199ec 
---------------- --------------------------- 
         %stddev     %change         %stddev
             \          |                \  
    114360            +4.5%     119554        stress-ng.clock.ops_per_sec
     27349 ± 89%     -90.9%       2477 ±  4%  stress-ng.time.file_system_inputs
  11510358            +4.6%   12034522        stress-ng.time.voluntary_context_switches
 1.807e+08            +2.4%  1.851e+08        interrupts.CAL:Function_call_interrupts
      0.00 ± 53%      -0.0        0.00 ± 46%  mpstat.cpu.all.iowait%
      2024 ±  7%     -32.1%       1375 ±  7%  slabinfo.dmaengine-unmap-16.active_objs
      2024 ±  7%     -32.1%       1375 ±  7%  slabinfo.dmaengine-unmap-16.num_objs
     43640 ± 13%     -23.3%      33491 ±  7%  meminfo.Active
     10027 ± 82%     -96.9%     306.00 ± 29%  meminfo.Active(file)
    752.67 ± 98%     -98.7%       9.67 ± 30%  meminfo.Buffers
      2506 ± 82%     -97.0%      76.33 ± 29%  proc-vmstat.nr_active_file
      2506 ± 82%     -97.0%      76.33 ± 29%  proc-vmstat.nr_zone_active_file
     14176 ± 82%     -90.7%       1323 ± 13%  proc-vmstat.pgpgin
    217.33 ± 82%     -90.9%      19.83 ± 14%  vmstat.io.bi
    753.17 ± 98%     -98.7%       9.67 ± 30%  vmstat.memory.buff
    356471            +4.0%     370646        vmstat.system.cs
      1.02 ± 30%    +128.4%       2.34 ± 28%  perf-sched.wait_and_delay.avg.ms.schedule_hrtimeout_range_clock.ep_poll.do_epoll_wait.__x64_sys_epoll_wait
      3.74 ± 33%    +201.5%      11.28 ± 26%  perf-sched.wait_and_delay.max.ms.schedule_hrtimeout_range_clock.ep_poll.do_epoll_wait.__x64_sys_epoll_wait
      1.02 ± 30%    +128.8%       2.33 ± 28%  perf-sched.wait_time.avg.ms.schedule_hrtimeout_range_clock.ep_poll.do_epoll_wait.__x64_sys_epoll_wait
      3.74 ± 33%    +201.1%      11.25 ± 26%  perf-sched.wait_time.max.ms.schedule_hrtimeout_range_clock.ep_poll.do_epoll_wait.__x64_sys_epoll_wait
 6.048e+09            +2.2%   6.18e+09        perf-stat.i.branch-instructions
  69934017            +2.7%   71856066        perf-stat.i.branch-misses
     26.91            -0.6       26.30        perf-stat.i.cache-miss-rate%
  53135032            -2.4%   51884388        perf-stat.i.cache-misses
    366423            +4.5%     382812        perf-stat.i.context-switches
      9.45            -2.6%       9.20        perf-stat.i.cpi
      4686            +2.5%       4804        perf-stat.i.cycles-between-cache-misses
 6.913e+09            +2.9%   7.11e+09        perf-stat.i.dTLB-loads
 2.371e+09            +3.8%  2.461e+09        perf-stat.i.dTLB-stores
 2.612e+10            +2.7%  2.683e+10        perf-stat.i.instructions
    161.64            +2.7%     166.00        perf-stat.i.metric.M/sec
  22851223            +3.2%   23572316        perf-stat.i.node-load-misses
   9794183            +3.9%   10176496        perf-stat.i.node-store-misses
      7.45            -2.7%       7.24        perf-stat.overall.MPKI
     27.37            -0.6       26.74        perf-stat.overall.cache-miss-rate%
      9.74            -2.7%       9.48        perf-stat.overall.cpi
      1240 ±  3%      +5.9%       1313 ±  2%  perf-stat.overall.instructions-per-iTLB-miss
      0.10            +2.7%       0.11        perf-stat.overall.ipc
 5.959e+09            +2.2%  6.088e+09        perf-stat.ps.branch-instructions
  68700080            +2.8%   70597822        perf-stat.ps.branch-misses
  52442864            -2.4%   51206685        perf-stat.ps.cache-misses
    361424            +4.5%     377658        perf-stat.ps.context-switches
 6.812e+09            +2.9%  7.007e+09        perf-stat.ps.dTLB-loads
 2.337e+09            +3.8%  2.426e+09        perf-stat.ps.dTLB-stores
 2.573e+10            +2.7%  2.643e+10        perf-stat.ps.instructions
  22537158            +3.2%   23252556        perf-stat.ps.node-load-misses
   9660122            +3.9%   10039431        perf-stat.ps.node-store-misses
 1.628e+12            +2.8%  1.673e+12        perf-stat.total.instructions
     29.42            -0.9       28.53        perf-profile.calltrace.cycles-pp.release_posix_timer.__x64_sys_timer_delete.do_syscall_64.entry_SYSCALL_64_after_hwframe
     29.55            -0.9       28.68        perf-profile.calltrace.cycles-pp.__x64_sys_timer_delete.do_syscall_64.entry_SYSCALL_64_after_hwframe
     10.29            -0.5        9.83 ±  2%  perf-profile.calltrace.cycles-pp._raw_spin_unlock_irqrestore.release_posix_timer.__x64_sys_timer_delete.do_syscall_64.entry_SYSCALL_64_after_hwframe
     20.82            -0.4       20.38        perf-profile.calltrace.cycles-pp._raw_spin_lock.do_timer_create.__x64_sys_timer_create.do_syscall_64.entry_SYSCALL_64_after_hwframe
     18.82            -0.4       18.39        perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.release_posix_timer.__x64_sys_timer_delete.do_syscall_64.entry_SYSCALL_64_after_hwframe
     21.26            -0.4       20.84        perf-profile.calltrace.cycles-pp.do_timer_create.__x64_sys_timer_create.do_syscall_64.entry_SYSCALL_64_after_hwframe
     21.29            -0.4       20.87        perf-profile.calltrace.cycles-pp.__x64_sys_timer_create.do_syscall_64.entry_SYSCALL_64_after_hwframe
     18.73            -0.4       18.31        perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.release_posix_timer.__x64_sys_timer_delete.do_syscall_64
     20.59            -0.4       20.18        perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.do_timer_create.__x64_sys_timer_create.do_syscall_64
      9.40            -0.4        9.02        perf-profile.calltrace.cycles-pp.sysvec_call_function.asm_sysvec_call_function._raw_spin_unlock_irqrestore.release_posix_timer.__x64_sys_timer_delete
      9.56            -0.4        9.18        perf-profile.calltrace.cycles-pp.asm_sysvec_call_function._raw_spin_unlock_irqrestore.release_posix_timer.__x64_sys_timer_delete.do_syscall_64
      9.37            -0.4        8.98        perf-profile.calltrace.cycles-pp.__sysvec_call_function.sysvec_call_function.asm_sysvec_call_function._raw_spin_unlock_irqrestore.release_posix_timer
     11.25            -0.3       10.94        perf-profile.calltrace.cycles-pp.flush_smp_call_function_queue.__sysvec_call_function.sysvec_call_function.asm_sysvec_call_function._raw_spin_unlock_irqrestore
      1.33 ±  2%      -0.1        1.24        perf-profile.calltrace.cycles-pp.ktime_get_real_ts64.posix_get_realtime_timespec.__x64_sys_clock_gettime.do_syscall_64.entry_SYSCALL_64_after_hwframe
      1.19            -0.1        1.11        perf-profile.calltrace.cycles-pp.ktime_get_ts64.posix_get_monotonic_timespec.__x64_sys_clock_gettime.do_syscall_64.entry_SYSCALL_64_after_hwframe
      1.21            -0.1        1.13        perf-profile.calltrace.cycles-pp.posix_get_monotonic_timespec.__x64_sys_clock_gettime.do_syscall_64.entry_SYSCALL_64_after_hwframe
      0.86            -0.0        0.82        perf-profile.calltrace.cycles-pp.ktime_get_with_offset.posix_get_boottime_timespec.__x64_sys_clock_gettime.do_syscall_64.entry_SYSCALL_64_after_hwframe
      0.88            -0.0        0.84        perf-profile.calltrace.cycles-pp.posix_get_boottime_timespec.__x64_sys_clock_gettime.do_syscall_64.entry_SYSCALL_64_after_hwframe
      0.71            -0.0        0.67 ±  2%  perf-profile.calltrace.cycles-pp.asm_sysvec_call_function.ktime_get_with_offset.posix_get_tai_timespec.__x64_sys_clock_gettime.do_syscall_64
      0.69 ±  2%      -0.0        0.65        perf-profile.calltrace.cycles-pp.flush_smp_call_function_queue.__sysvec_call_function.sysvec_call_function.asm_sysvec_call_function.ktime_get_with_offset
      0.69            -0.0        0.66 ±  2%  perf-profile.calltrace.cycles-pp.sysvec_call_function.asm_sysvec_call_function.ktime_get_with_offset.posix_get_tai_timespec.__x64_sys_clock_gettime
      0.63            +0.0        0.66        perf-profile.calltrace.cycles-pp.common_timer_get.do_timer_gettime.__x64_sys_timer_gettime.do_syscall_64.entry_SYSCALL_64_after_hwframe
      0.95            +0.0        0.99        perf-profile.calltrace.cycles-pp.__sysvec_call_function.sysvec_call_function.asm_sysvec_call_function.llist_add_batch.smp_call_function_many_cond
      0.94            +0.0        0.99        perf-profile.calltrace.cycles-pp.flush_smp_call_function_queue.__sysvec_call_function.sysvec_call_function.asm_sysvec_call_function.llist_add_batch
      0.97            +0.0        1.02        perf-profile.calltrace.cycles-pp.asm_sysvec_call_function.llist_add_batch.smp_call_function_many_cond.on_each_cpu_cond_mask.clock_was_set
      0.95            +0.0        1.00        perf-profile.calltrace.cycles-pp.sysvec_call_function.asm_sysvec_call_function.llist_add_batch.smp_call_function_many_cond.on_each_cpu_cond_mask
      1.14            +0.1        1.19        perf-profile.calltrace.cycles-pp.default_send_IPI_mask_sequence_phys.smp_call_function_many_cond.on_each_cpu_cond_mask.clock_was_set.timekeeping_inject_offset
      1.19            +0.1        1.24        perf-profile.calltrace.cycles-pp.do_timer_gettime.__x64_sys_timer_gettime.do_syscall_64.entry_SYSCALL_64_after_hwframe
      1.23            +0.1        1.29        perf-profile.calltrace.cycles-pp.__x64_sys_timer_gettime.do_syscall_64.entry_SYSCALL_64_after_hwframe
      2.74            +0.1        2.81        perf-profile.calltrace.cycles-pp.ktime_get.clockevents_program_event.retrigger_next_event.flush_smp_call_function_queue.__sysvec_call_function
      0.62 ±  3%      +0.1        0.69 ±  4%  perf-profile.calltrace.cycles-pp.do_open.path_openat.do_filp_open.do_sys_openat2.do_sys_open
      0.85 ±  2%      +0.1        0.94 ±  3%  perf-profile.calltrace.cycles-pp.do_filp_open.do_sys_openat2.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe
      0.85 ±  2%      +0.1        0.94 ±  3%  perf-profile.calltrace.cycles-pp.path_openat.do_filp_open.do_sys_openat2.do_sys_open.do_syscall_64
      0.90 ±  3%      +0.1        1.00 ±  3%  perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.do_adjtimex.__do_sys_clock_adjtime.do_syscall_64
      0.94 ±  2%      +0.1        1.03 ±  3%  perf-profile.calltrace.cycles-pp.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe
      0.92 ±  2%      +0.1        1.02 ±  3%  perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.do_adjtimex.__do_sys_clock_adjtime.do_syscall_64.entry_SYSCALL_64_after_hwframe
      0.94 ±  2%      +0.1        1.03 ±  3%  perf-profile.calltrace.cycles-pp.do_sys_openat2.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe
      2.49            +0.1        2.58        perf-profile.calltrace.cycles-pp.llist_add_batch.smp_call_function_many_cond.on_each_cpu_cond_mask.clock_was_set.timekeeping_inject_offset
     19.32            +0.2       19.54        perf-profile.calltrace.cycles-pp.timekeeping_inject_offset.do_adjtimex.__do_sys_clock_adjtime.do_syscall_64.entry_SYSCALL_64_after_hwframe
     21.84            +0.3       22.18        perf-profile.calltrace.cycles-pp.do_adjtimex.__do_sys_clock_adjtime.do_syscall_64.entry_SYSCALL_64_after_hwframe
     22.02            +0.3       22.36        perf-profile.calltrace.cycles-pp.__do_sys_clock_adjtime.do_syscall_64.entry_SYSCALL_64_after_hwframe
      2.69 ±  3%      +0.4        3.14 ±  4%  perf-profile.calltrace.cycles-pp.flush_smp_call_function_queue.__sysvec_call_function.sysvec_call_function.asm_sysvec_call_function.osq_lock
      2.71 ±  3%      +0.4        3.15 ±  4%  perf-profile.calltrace.cycles-pp.sysvec_call_function.asm_sysvec_call_function.osq_lock.__mutex_lock.i40e_ptp_gettimex
      2.69 ±  3%      +0.4        3.14 ±  4%  perf-profile.calltrace.cycles-pp.__sysvec_call_function.sysvec_call_function.asm_sysvec_call_function.osq_lock.__mutex_lock
      2.75 ±  3%      +0.5        3.20 ±  4%  perf-profile.calltrace.cycles-pp.asm_sysvec_call_function.osq_lock.__mutex_lock.i40e_ptp_gettimex.pc_clock_gettime
      3.47            +0.5        3.92 ±  6%  perf-profile.calltrace.cycles-pp.clockevents_program_event.retrigger_next_event.flush_smp_call_function_queue.__sysvec_call_function.sysvec_call_function
      0.09 ±223%      +0.5        0.55 ±  5%  perf-profile.calltrace.cycles-pp.do_dentry_open.do_open.path_openat.do_filp_open.do_sys_openat2
     14.21            +0.7       14.88 ±  2%  perf-profile.calltrace.cycles-pp.__x64_sys_clock_gettime.do_syscall_64.entry_SYSCALL_64_after_hwframe
      5.68 ±  2%      +0.9        6.60 ±  3%  perf-profile.calltrace.cycles-pp.osq_lock.__mutex_lock.i40e_ptp_gettimex.pc_clock_gettime.__x64_sys_clock_gettime
      6.09 ±  2%      +1.0        7.05 ±  3%  perf-profile.calltrace.cycles-pp.__mutex_lock.i40e_ptp_gettimex.pc_clock_gettime.__x64_sys_clock_gettime.do_syscall_64
      6.52 ±  2%      +1.0        7.50 ±  3%  perf-profile.calltrace.cycles-pp.i40e_ptp_gettimex.pc_clock_gettime.__x64_sys_clock_gettime.do_syscall_64.entry_SYSCALL_64_after_hwframe
      6.59 ±  2%      +1.0        7.57 ±  3%  perf-profile.calltrace.cycles-pp.pc_clock_gettime.__x64_sys_clock_gettime.do_syscall_64.entry_SYSCALL_64_after_hwframe
     29.42            -0.9       28.53        perf-profile.children.cycles-pp.release_posix_timer
     29.55            -0.9       28.68        perf-profile.children.cycles-pp.__x64_sys_timer_delete
     41.94            -0.6       41.29        perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath
     21.27            -0.4       20.84        perf-profile.children.cycles-pp.do_timer_create
     21.29            -0.4       20.87        perf-profile.children.cycles-pp.__x64_sys_timer_create
     21.39            -0.4       20.99        perf-profile.children.cycles-pp._raw_spin_lock
     15.00            -0.4       14.64        perf-profile.children.cycles-pp._raw_spin_unlock_irqrestore
      2.38            -0.1        2.27        perf-profile.children.cycles-pp.ktime_get_with_offset
      1.90 ±  2%      -0.1        1.79        perf-profile.children.cycles-pp.ktime_get_real_ts64
      1.21            -0.1        1.13        perf-profile.children.cycles-pp.posix_get_monotonic_timespec
      1.20            -0.1        1.12        perf-profile.children.cycles-pp.ktime_get_ts64
      0.88            -0.0        0.84        perf-profile.children.cycles-pp.posix_get_boottime_timespec
      0.33            -0.0        0.31        perf-profile.children.cycles-pp.poll_idle
      0.37            +0.0        0.39        perf-profile.children.cycles-pp.syscall_exit_to_user_mode
      0.28            +0.0        0.29        perf-profile.children.cycles-pp.hrtimer_update_next_event
      0.21 ±  2%      +0.0        0.23 ±  3%  perf-profile.children.cycles-pp.syscall_enter_from_user_mode
      0.30            +0.0        0.33        perf-profile.children.cycles-pp._copy_to_user
      0.17 ±  3%      +0.0        0.19        perf-profile.children.cycles-pp.__lock_timer
      0.31 ±  2%      +0.0        0.33 ±  3%  perf-profile.children.cycles-pp.mutex_spin_on_owner
      0.63            +0.0        0.65        perf-profile.children.cycles-pp.__default_send_IPI_dest_field
      0.04 ± 45%      +0.0        0.07 ± 10%  perf-profile.children.cycles-pp.__legitimize_path
      0.63            +0.0        0.66        perf-profile.children.cycles-pp.common_timer_get
      1.12            +0.0        1.17        perf-profile.children.cycles-pp.llist_reverse_order
      1.36            +0.1        1.41        perf-profile.children.cycles-pp.lapic_next_deadline
      1.16            +0.1        1.21        perf-profile.children.cycles-pp.default_send_IPI_mask_sequence_phys
      0.49 ±  3%      +0.1        0.55 ±  5%  perf-profile.children.cycles-pp.do_dentry_open
      1.19            +0.1        1.24        perf-profile.children.cycles-pp.do_timer_gettime
      1.24            +0.1        1.29        perf-profile.children.cycles-pp.__x64_sys_timer_gettime
      0.62 ±  3%      +0.1        0.69 ±  4%  perf-profile.children.cycles-pp.do_open
      0.85 ±  2%      +0.1        0.94 ±  3%  perf-profile.children.cycles-pp.do_filp_open
      0.85 ±  2%      +0.1        0.94 ±  3%  perf-profile.children.cycles-pp.path_openat
      0.94 ±  2%      +0.1        1.04 ±  3%  perf-profile.children.cycles-pp.do_sys_open
      0.94 ±  2%      +0.1        1.03 ±  3%  perf-profile.children.cycles-pp.do_sys_openat2
      2.50            +0.1        2.61        perf-profile.children.cycles-pp.llist_add_batch
     19.33            +0.2       19.54        perf-profile.children.cycles-pp.timekeeping_inject_offset
      8.95            +0.2        9.17        perf-profile.children.cycles-pp.ktime_get
      7.83            +0.2        8.08        perf-profile.children.cycles-pp.clockevents_program_event
     21.85            +0.3       22.18        perf-profile.children.cycles-pp.do_adjtimex
     22.02            +0.4       22.37        perf-profile.children.cycles-pp.__do_sys_clock_adjtime
     14.21            +0.7       14.88 ±  2%  perf-profile.children.cycles-pp.__x64_sys_clock_gettime
      5.71 ±  2%      +0.9        6.64 ±  3%  perf-profile.children.cycles-pp.osq_lock
      6.09 ±  2%      +1.0        7.05 ±  3%  perf-profile.children.cycles-pp.__mutex_lock
      6.52 ±  2%      +1.0        7.50 ±  3%  perf-profile.children.cycles-pp.i40e_ptp_gettimex
      6.59 ±  2%      +1.0        7.57 ±  3%  perf-profile.children.cycles-pp.pc_clock_gettime
     33.43            -0.6       32.85        perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath
      1.02 ±  2%      -0.1        0.96        perf-profile.self.cycles-pp.ktime_get_real_ts64
      0.65            -0.0        0.60        perf-profile.self.cycles-pp.ktime_get_ts64
      0.62            -0.0        0.60        perf-profile.self.cycles-pp.ktime_get_coarse_real_ts64
      0.63            +0.0        0.65        perf-profile.self.cycles-pp.__default_send_IPI_dest_field
      0.59            +0.0        0.62        perf-profile.self.cycles-pp.flush_smp_call_function_queue
      1.12            +0.0        1.17        perf-profile.self.cycles-pp.llist_reverse_order
      1.36            +0.0        1.41        perf-profile.self.cycles-pp.lapic_next_deadline
      1.49            +0.1        1.54        perf-profile.self.cycles-pp.llist_add_batch
      8.74            +0.2        8.95        perf-profile.self.cycles-pp.ktime_get
      2.84 ±  2%      +0.5        3.32 ±  4%  perf-profile.self.cycles-pp.osq_lock


                                                                                
                             stress-ng.clock.ops_per_sec                        
                                                                                
  126000 +------------------------------------------------------------------+   
  124000 |-O   O  O                                                         |   
         |   O                                                              |   
  122000 |-+                                                                |   
  120000 |-+        O O O O O  O   O O O O  O O O O O    O   O              |   
         |                       O                    O    O   O            |   
  118000 |-+                                                                |   
  116000 |-+                                                                |   
  114000 |-+                                                     +.+.. .+.+.|   
         |                                                       :    +     |   
  112000 |-+                                                    :           |   
  110000 |-+  .+..+.+.+.+. .+..+   +. .+.+.. .+.+.+.+.+..+. .+. :           |   
         |.+.+            +     : :  +      +              +   +            |   
  108000 |-+                    : :                                         |   
  106000 +------------------------------------------------------------------+   
                                                                                
                                                                                
[*] 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.


---
0DAY/LKP+ Test Infrastructure                   Open Source Technology Center
https://lists.01.org/hyperkitty/list/lkp@lists.01.org       Intel Corporation

Thanks,
Oliver Sang


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