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Date:   Thu, 27 Aug 2020 09:27:28 +0800
From:   kernel test robot <rong.a.chen@...el.com>
To:     Vincent Guittot <vincent.guittot@...aro.org>
Cc:     Ingo Molnar <mingo@...nel.org>, Rik van Riel <riel@...riel.com>,
        Ben Segall <bsegall@...gle.com>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Juri Lelli <juri.lelli@...hat.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Mel Gorman <mgorman@...e.de>, Mike Galbraith <efault@....de>,
        Peter Zijlstra <peterz@...radead.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org,
        lkp@...el.com, ying.huang@...el.com, feng.tang@...el.com,
        zhengjun.xing@...el.com, aubrey.li@...ux.intel.com,
        yu.c.chen@...el.com
Subject: [sched/fair] fcf0553db6: vm-scalability.median 4.6% improvement

Greeting,

FYI, we noticed a 1.5% improvement of vm-scalability.throughput due to commit:


commit: fcf0553db6f4c79387864f6e4ab4a891601f395e ("sched/fair: Remove meaningless imbalance calculation")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master


in testcase: vm-scalability
on test machine: 144 threads Intel(R) Xeon(R) CPU E7-8890 v3 @ 2.50GHz with 512G memory
with following parameters:

	runtime: 300s
	size: 8T
	test: anon-w-seq
	cpufreq_governor: performance
	ucode: 0x16

test-description: The motivation behind this suite is to exercise functions and regions of the mm/ of the Linux kernel which are of interest to us.
test-url: https://git.kernel.org/cgit/linux/kernel/git/wfg/vm-scalability.git/

In addition to that, the commit also has significant impact on the following tests:





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/rootfs/runtime/size/tbox_group/test/testcase/ucode:
  gcc-9/performance/x86_64-rhel-8.3/debian-10.4-x86_64-20200603.cgz/300s/8T/lkp-hsw-4ex1/anon-w-seq/vm-scalability/0x16

commit: 
  a349834703 ("sched/fair: Rename sg_lb_stats::sum_nr_running to sum_h_nr_running")
  fcf0553db6 ("sched/fair: Remove meaningless imbalance calculation")

a349834703010183 fcf0553db6f4c79387864f6e4ab 
---------------- --------------------------- 
         %stddev     %change         %stddev
             \          |                \  
    595857            +4.6%     623549        vm-scalability.median
      8.22 ±  7%      -3.2        5.01 ±  5%  vm-scalability.median_stddev%
  88608356            +1.5%   89976003        vm-scalability.throughput
    498624 ±  2%      -9.5%     451343        vm-scalability.time.involuntary_context_switches
      9335            -1.3%       9212        vm-scalability.time.percent_of_cpu_this_job_got
  12408855 ±  9%     -17.1%   10291775 ±  8%  meminfo.DirectMap2M
     20311 ± 40%     +60.3%      32564 ± 16%  numa-numastat.node0.other_node
      1759 ±  8%     +62.0%       2850 ±  6%  syscalls.sys_read.med
      6827 ±  2%      -2.8%       6636        vmstat.system.cs
     12092 ± 18%     -43.8%       6792 ± 30%  numa-vmstat.node0.nr_slab_reclaimable
      6233 ± 26%     +29.4%       8069 ± 23%  numa-vmstat.node3.nr_slab_reclaimable
     14990 ± 12%     +45.0%      21732 ± 18%  numa-vmstat.node3.nr_slab_unreclaimable
     48371 ± 18%     -43.8%      27169 ± 30%  numa-meminfo.node0.KReclaimable
     48371 ± 18%     -43.8%      27169 ± 30%  numa-meminfo.node0.SReclaimable
    167341 ± 16%     -32.6%     112749 ± 31%  numa-meminfo.node0.Slab
     24931 ± 26%     +29.5%      32277 ± 23%  numa-meminfo.node3.KReclaimable
     24931 ± 26%     +29.5%      32277 ± 23%  numa-meminfo.node3.SReclaimable
     59961 ± 12%     +45.0%      86933 ± 18%  numa-meminfo.node3.SUnreclaim
     84893 ± 15%     +40.4%     119211 ± 13%  numa-meminfo.node3.Slab
      4627 ±  9%     +25.4%       5802 ±  4%  slabinfo.eventpoll_pwq.active_objs
      4627 ±  9%     +25.4%       5802 ±  4%  slabinfo.eventpoll_pwq.num_objs
      2190 ± 14%     +26.1%       2762 ±  4%  slabinfo.kmem_cache.active_objs
      2190 ± 14%     +26.1%       2762 ±  4%  slabinfo.kmem_cache.num_objs
      5823 ± 12%     +22.2%       7118 ±  4%  slabinfo.kmem_cache_node.active_objs
      9665 ±  5%     +10.3%      10663 ±  3%  slabinfo.shmem_inode_cache.active_objs
      9775 ±  5%     +10.1%      10762 ±  3%  slabinfo.shmem_inode_cache.num_objs
    322.79            -7.9%     297.22        perf-stat.i.cpu-migrations
     21.89 ±  3%      -1.2       20.69        perf-stat.i.node-load-miss-rate%
  13112232 ±  3%      +3.4%   13562841        perf-stat.i.node-loads
     21.44 ±  2%      -1.1       20.29        perf-stat.overall.node-load-miss-rate%
      3160            +1.9%       3219        perf-stat.overall.path-length
      6748 ±  2%      -2.6%       6570        perf-stat.ps.context-switches
    319.09            -8.2%     292.97        perf-stat.ps.cpu-migrations
  12905267 ±  3%      +3.4%   13345546        perf-stat.ps.node-loads
     12193 ±  5%      +8.6%      13239 ±  4%  softirqs.CPU105.RCU
     12791 ±  6%     +12.4%      14382 ±  7%  softirqs.CPU22.RCU
     12781 ±  5%     +12.3%      14351 ±  4%  softirqs.CPU28.RCU
     12870 ±  4%      +9.0%      14033 ±  7%  softirqs.CPU31.RCU
     11451 ±  5%     +11.7%      12785 ±  4%  softirqs.CPU90.RCU
     11449 ±  6%      +9.1%      12497 ±  6%  softirqs.CPU91.RCU
     11486 ±  6%      +8.9%      12510        softirqs.CPU93.RCU
     12197 ±  5%     +10.4%      13462 ±  5%  softirqs.CPU97.RCU
      3899 ±100%     -78.7%     830.89 ± 67%  sched_debug.cfs_rq:/.load_avg.max
    386.54 ± 91%     -76.1%      92.43 ± 61%  sched_debug.cfs_rq:/.load_avg.stddev
    747.05 ±  7%     -26.9%     546.12 ± 31%  sched_debug.cfs_rq:/.runnable_load_avg.max
   -203275          +540.7%   -1302453        sched_debug.cfs_rq:/.spread0.avg
      1142 ±  5%      +9.6%       1251 ±  6%  sched_debug.cfs_rq:/.util_avg.max
      1.00 ±163%   +2117.5%      22.17 ±100%  sched_debug.cfs_rq:/.util_avg.min
    212.47 ± 14%     -16.9%     176.57 ±  4%  sched_debug.cfs_rq:/.util_est_enqueued.stddev
      0.00 ±  7%    +226.7%       0.00 ± 18%  sched_debug.cpu.next_balance.stddev
      2.48 ± 20%     -24.6%       1.87 ± 11%  sched_debug.cpu.nr_running.max
      0.64 ± 29%     -49.1%       0.33 ± 11%  sched_debug.cpu.nr_running.stddev
    137.50 ± 54%    +194.2%     404.50 ± 78%  interrupts.CPU109.RES:Rescheduling_interrupts
    822.50 ± 22%     -39.4%     498.75 ± 49%  interrupts.CPU114.CAL:Function_call_interrupts
    126.00 ± 72%    +161.1%     329.00 ± 48%  interrupts.CPU117.RES:Rescheduling_interrupts
    153.00 ± 69%    +121.6%     339.00 ± 51%  interrupts.CPU119.RES:Rescheduling_interrupts
    162.75 ± 83%    +170.8%     440.75 ± 36%  interrupts.CPU121.RES:Rescheduling_interrupts
    798.00 ± 30%     -45.0%     438.75 ± 28%  interrupts.CPU126.CAL:Function_call_interrupts
      3831 ± 37%     -96.4%     138.50 ±106%  interrupts.CPU128.NMI:Non-maskable_interrupts
      3831 ± 37%     -96.4%     138.50 ±106%  interrupts.CPU128.PMI:Performance_monitoring_interrupts
    218.25 ± 44%     -51.7%     105.50 ±  4%  interrupts.CPU128.RES:Rescheduling_interrupts
    453.00 ± 74%     -74.3%     116.50 ± 26%  interrupts.CPU130.RES:Rescheduling_interrupts
      2382 ± 15%     -96.6%      80.75 ±133%  interrupts.CPU138.NMI:Non-maskable_interrupts
      2382 ± 15%     -96.6%      80.75 ±133%  interrupts.CPU138.PMI:Performance_monitoring_interrupts
    557.25 ±155%    +341.2%       2458 ± 79%  interrupts.CPU14.NMI:Non-maskable_interrupts
    557.25 ±155%    +341.2%       2458 ± 79%  interrupts.CPU14.PMI:Performance_monitoring_interrupts
    782.00 ± 31%     -37.0%     492.50 ± 50%  interrupts.CPU17.CAL:Function_call_interrupts
    779.75 ± 31%     -36.8%     492.50 ± 50%  interrupts.CPU18.CAL:Function_call_interrupts
    782.25 ± 31%     -37.2%     491.00 ± 49%  interrupts.CPU20.CAL:Function_call_interrupts
      5855 ± 20%     -75.7%       1420 ±106%  interrupts.CPU23.NMI:Non-maskable_interrupts
      5855 ± 20%     -75.7%       1420 ±106%  interrupts.CPU23.PMI:Performance_monitoring_interrupts
    785.00 ± 30%     -38.0%     487.00 ± 51%  interrupts.CPU3.CAL:Function_call_interrupts
      1266 ±166%    +241.5%       4325 ± 38%  interrupts.CPU34.NMI:Non-maskable_interrupts
      1266 ±166%    +241.5%       4325 ± 38%  interrupts.CPU34.PMI:Performance_monitoring_interrupts
    784.00 ± 30%     -37.0%     493.75 ± 49%  interrupts.CPU36.CAL:Function_call_interrupts
    783.25 ± 31%     -37.6%     489.00 ± 51%  interrupts.CPU37.CAL:Function_call_interrupts
    325.75 ± 11%     +80.6%     588.25 ± 45%  interrupts.CPU37.RES:Rescheduling_interrupts
    782.00 ± 31%     -37.0%     492.50 ± 50%  interrupts.CPU39.CAL:Function_call_interrupts
    781.50 ± 31%     -38.0%     484.50 ± 52%  interrupts.CPU41.CAL:Function_call_interrupts
    292.50 ± 21%     +59.2%     465.75 ± 26%  interrupts.CPU43.RES:Rescheduling_interrupts
    233.00 ± 12%     +59.4%     371.50 ± 20%  interrupts.CPU48.RES:Rescheduling_interrupts
    883.00 ±160%     -97.1%      25.25 ±150%  interrupts.CPU50.NMI:Non-maskable_interrupts
    883.00 ±160%     -97.1%      25.25 ±150%  interrupts.CPU50.PMI:Performance_monitoring_interrupts
    265.25 ± 28%     +69.8%     450.50 ± 27%  interrupts.CPU50.RES:Rescheduling_interrupts
    249.75 ± 19%     +40.8%     351.75 ± 11%  interrupts.CPU51.RES:Rescheduling_interrupts
    785.50 ± 30%     -37.2%     493.00 ± 49%  interrupts.CPU53.CAL:Function_call_interrupts
      1.75 ±116%  +1.2e+05%       2020 ±108%  interrupts.CPU53.NMI:Non-maskable_interrupts
      1.75 ±116%  +1.2e+05%       2020 ±108%  interrupts.CPU53.PMI:Performance_monitoring_interrupts
    826.75 ± 79%    +429.5%       4377 ± 27%  interrupts.CPU56.NMI:Non-maskable_interrupts
    826.75 ± 79%    +429.5%       4377 ± 27%  interrupts.CPU56.PMI:Performance_monitoring_interrupts
    782.50 ± 31%     -37.6%     488.00 ± 51%  interrupts.CPU57.CAL:Function_call_interrupts
     32.25 ±164%    -100.0%       0.00        interrupts.CPU57.TLB:TLB_shootdowns
    782.50 ± 31%     -36.9%     494.00 ± 50%  interrupts.CPU6.CAL:Function_call_interrupts
    781.00 ± 31%     -36.8%     493.50 ± 50%  interrupts.CPU61.CAL:Function_call_interrupts
    658.75 ±169%    +429.9%       3490 ± 43%  interrupts.CPU61.NMI:Non-maskable_interrupts
    658.75 ±169%    +429.9%       3490 ± 43%  interrupts.CPU61.PMI:Performance_monitoring_interrupts
    405.75 ± 20%     -35.6%     261.50 ± 17%  interrupts.CPU62.RES:Rescheduling_interrupts
    781.75 ± 31%     -36.8%     494.00 ± 50%  interrupts.CPU65.CAL:Function_call_interrupts
    782.50 ± 31%     -37.0%     492.75 ± 50%  interrupts.CPU66.CAL:Function_call_interrupts
    838.25 ±121%    +513.8%       5145 ± 30%  interrupts.CPU66.NMI:Non-maskable_interrupts
    838.25 ±121%    +513.8%       5145 ± 30%  interrupts.CPU66.PMI:Performance_monitoring_interrupts
    782.00 ± 31%     -37.1%     492.25 ± 50%  interrupts.CPU67.CAL:Function_call_interrupts
    782.25 ± 31%     -37.0%     492.75 ± 49%  interrupts.CPU69.CAL:Function_call_interrupts
    780.00 ± 31%     -37.3%     489.25 ± 49%  interrupts.CPU71.CAL:Function_call_interrupts
    784.25 ± 31%     -38.0%     486.50 ± 51%  interrupts.CPU75.CAL:Function_call_interrupts
    783.25 ± 31%     -36.9%     494.25 ± 50%  interrupts.CPU77.CAL:Function_call_interrupts
    822.00 ± 33%     -39.9%     494.25 ± 50%  interrupts.CPU83.CAL:Function_call_interrupts
    789.75 ± 29%     -37.1%     496.50 ± 49%  interrupts.CPU90.CAL:Function_call_interrupts
      5966 ± 15%     -53.5%       2777 ± 62%  interrupts.CPU94.NMI:Non-maskable_interrupts
      5966 ± 15%     -53.5%       2777 ± 62%  interrupts.CPU94.PMI:Performance_monitoring_interrupts
     46379 ±  9%     -10.1%      41674 ±  4%  interrupts.RES:Rescheduling_interrupts
     68.78           -10.0       58.75 ±  8%  perf-profile.calltrace.cycles-pp.do_access
     30.04 ±  4%      -4.3       25.69 ±  9%  perf-profile.calltrace.cycles-pp.do_page_fault.page_fault.do_access
     30.06 ±  4%      -4.3       25.71 ±  9%  perf-profile.calltrace.cycles-pp.page_fault.do_access
     30.00 ±  4%      -4.3       25.66 ±  9%  perf-profile.calltrace.cycles-pp.do_user_addr_fault.do_page_fault.page_fault.do_access
     29.93 ±  4%      -4.3       25.59 ±  9%  perf-profile.calltrace.cycles-pp.handle_mm_fault.do_user_addr_fault.do_page_fault.page_fault.do_access
     26.63 ±  2%      -2.7       23.88 ±  6%  perf-profile.calltrace.cycles-pp.do_rw_once
      0.57 ±  5%      -0.3        0.27 ±100%  perf-profile.calltrace.cycles-pp.rmqueue.get_page_from_freelist.__alloc_pages_nodemask.alloc_pages_vma.do_huge_pmd_anonymous_page
      0.63 ±  6%      -0.2        0.43 ± 58%  perf-profile.calltrace.cycles-pp.__alloc_pages_nodemask.alloc_pages_vma.do_huge_pmd_anonymous_page.__handle_mm_fault.handle_mm_fault
      0.63 ±  6%      -0.2        0.43 ± 58%  perf-profile.calltrace.cycles-pp.alloc_pages_vma.do_huge_pmd_anonymous_page.__handle_mm_fault.handle_mm_fault.do_user_addr_fault
      0.62 ±  5%      -0.2        0.42 ± 58%  perf-profile.calltrace.cycles-pp.get_page_from_freelist.__alloc_pages_nodemask.alloc_pages_vma.do_huge_pmd_anonymous_page.__handle_mm_fault
     28.25 ±  5%      +6.6       34.88 ±  6%  perf-profile.calltrace.cycles-pp.clear_page_erms.clear_subpage.clear_huge_page.do_huge_pmd_anonymous_page.__handle_mm_fault
     29.30 ±  5%      +6.7       36.03 ±  6%  perf-profile.calltrace.cycles-pp.clear_subpage.clear_huge_page.do_huge_pmd_anonymous_page.__handle_mm_fault.handle_mm_fault
     30.21 ±  5%      +7.0       37.23 ±  6%  perf-profile.calltrace.cycles-pp.clear_huge_page.do_huge_pmd_anonymous_page.__handle_mm_fault.handle_mm_fault.do_user_addr_fault
     31.31 ±  5%      +7.3       38.61 ±  6%  perf-profile.calltrace.cycles-pp.do_huge_pmd_anonymous_page.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.do_page_fault
     31.39 ±  5%      +7.3       38.70 ±  6%  perf-profile.calltrace.cycles-pp.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.do_page_fault.page_fault
      1.50 ±106%     +11.7       13.17 ± 35%  perf-profile.calltrace.cycles-pp.handle_mm_fault.do_user_addr_fault.do_page_fault.page_fault
      1.50 ±106%     +11.7       13.20 ± 35%  perf-profile.calltrace.cycles-pp.do_user_addr_fault.do_page_fault.page_fault
      1.51 ±106%     +11.7       13.21 ± 35%  perf-profile.calltrace.cycles-pp.page_fault
      1.50 ±106%     +11.7       13.21 ± 35%  perf-profile.calltrace.cycles-pp.do_page_fault.page_fault
     65.44            -9.4       56.04 ±  8%  perf-profile.children.cycles-pp.do_access
     30.08            -3.4       26.70 ±  7%  perf-profile.children.cycles-pp.do_rw_once
      0.06 ± 11%      +0.0        0.08 ± 10%  perf-profile.children.cycles-pp.pagevec_lru_move_fn
      0.14 ±  6%      +0.0        0.16 ±  6%  perf-profile.children.cycles-pp._raw_spin_lock_irqsave
      0.13 ± 10%      +0.0        0.16 ±  9%  perf-profile.children.cycles-pp.pte_alloc_one
      0.12 ± 12%      +0.0        0.15 ±  8%  perf-profile.children.cycles-pp.prep_new_page
      0.12 ± 10%      +0.0        0.16 ± 20%  perf-profile.children.cycles-pp.perf_mux_hrtimer_handler
      0.12 ±  9%      +0.0        0.15 ± 10%  perf-profile.children.cycles-pp.prepare_exit_to_usermode
      0.14 ±  8%      +0.0        0.19 ±  9%  perf-profile.children.cycles-pp.swapgs_restore_regs_and_return_to_usermode
      0.00            +0.1        0.05 ±  8%  perf-profile.children.cycles-pp.irq_work_interrupt
      0.00            +0.1        0.05 ±  8%  perf-profile.children.cycles-pp.smp_irq_work_interrupt
      0.00            +0.1        0.05 ±  8%  perf-profile.children.cycles-pp.irq_work_run
      0.00            +0.1        0.05 ±  8%  perf-profile.children.cycles-pp.printk
      0.00            +0.1        0.06 ± 11%  perf-profile.children.cycles-pp.irq_work_run_list
      0.00            +0.1        0.07 ± 31%  perf-profile.children.cycles-pp.__intel_pmu_enable_all
      0.35 ±  3%      +0.1        0.43 ±  7%  perf-profile.children.cycles-pp._cond_resched
      0.38 ±  6%      +0.1        0.48 ±  6%  perf-profile.children.cycles-pp.___might_sleep
      0.46 ±  8%      +0.1        0.60 ± 13%  perf-profile.children.cycles-pp.scheduler_tick
      0.66 ±  8%      +0.2        0.81 ±  8%  perf-profile.children.cycles-pp.rmqueue
      0.70 ±  8%      +0.2        0.87 ±  8%  perf-profile.children.cycles-pp.alloc_pages_vma
      0.79 ±  9%      +0.2        0.97 ±  8%  perf-profile.children.cycles-pp.get_page_from_freelist
      0.83 ±  8%      +0.2        1.03 ±  7%  perf-profile.children.cycles-pp.__alloc_pages_nodemask
      1.09 ±  6%      +0.3        1.38 ± 11%  perf-profile.children.cycles-pp.__hrtimer_run_queues
      2.11 ±  3%      +0.5        2.63 ± 12%  perf-profile.children.cycles-pp.apic_timer_interrupt
     28.56 ±  5%      +6.6       35.18 ±  6%  perf-profile.children.cycles-pp.clear_page_erms
     29.39 ±  5%      +6.8       36.14 ±  6%  perf-profile.children.cycles-pp.clear_subpage
     30.34 ±  5%      +7.0       37.30 ±  6%  perf-profile.children.cycles-pp.clear_huge_page
     31.39 ±  5%      +7.2       38.61 ±  6%  perf-profile.children.cycles-pp.do_huge_pmd_anonymous_page
     31.47 ±  5%      +7.2       38.72 ±  6%  perf-profile.children.cycles-pp.__handle_mm_fault
     31.52 ±  5%      +7.3       38.77 ±  6%  perf-profile.children.cycles-pp.handle_mm_fault
     31.60 ±  5%      +7.3       38.87 ±  6%  perf-profile.children.cycles-pp.do_user_addr_fault
     31.67 ±  5%      +7.3       38.95 ±  6%  perf-profile.children.cycles-pp.page_fault
     31.63 ±  5%      +7.3       38.91 ±  6%  perf-profile.children.cycles-pp.do_page_fault
     29.16 ±  4%      -4.1       25.05 ±  7%  perf-profile.self.cycles-pp.do_access
     27.38            -3.1       24.28 ±  7%  perf-profile.self.cycles-pp.do_rw_once
      0.05 ±  8%      +0.0        0.07 ± 12%  perf-profile.self.cycles-pp.prep_new_page
      0.09 ±  9%      +0.0        0.12 ± 11%  perf-profile.self.cycles-pp.prepare_exit_to_usermode
      0.00            +0.1        0.05 ±  8%  perf-profile.self.cycles-pp.do_huge_pmd_anonymous_page
      0.00            +0.1        0.07 ± 31%  perf-profile.self.cycles-pp.__intel_pmu_enable_all
      0.28 ±  3%      +0.1        0.35 ±  7%  perf-profile.self.cycles-pp._cond_resched
      0.35 ±  4%      +0.1        0.43 ±  6%  perf-profile.self.cycles-pp.___might_sleep
      0.48 ±  8%      +0.1        0.60 ±  9%  perf-profile.self.cycles-pp.rmqueue
      0.88 ±  4%      +0.2        1.11 ±  3%  perf-profile.self.cycles-pp.clear_subpage
     28.18 ±  5%      +6.4       34.57 ±  6%  perf-profile.self.cycles-pp.clear_page_erms


                                                                                
                                vm-scalability.median                           
                                                                                
  660000 +------------------------------------------------------------------+   
  650000 |-+O                                                               |   
         |       O O  O         O                         O    O  O         |   
  640000 |-+  O         O  O  O              O  O O  O O                    |   
  630000 |-+                       O O  O  O                                |   
         |                                                          O  O O  |   
  620000 |-+                                                                |   
  610000 |-+                                                                |   
  600000 |-+                            +..+.  .+                           |   
         |         +.. .+..           ..     +.  +  .+.+                    |   
  590000 |-.+.    +   +              +            +.                        |   
  580000 |.+  +..+         +..  +.. :                                       |   
         |                     +    :                                       |   
  570000 |-+                  +    +                                        |   
  560000 +------------------------------------------------------------------+   
                                                                                
                                                                                
[*] 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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