FYI, we noticed the below changes on https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master commit 8fb47ff100af48034eb11449a81f42af24213987 ("cpufreq: governor: Replace timers with utilization update callbacks") ========================================================================================= compiler/kconfig/nr_task/rootfs/tbox_group/test/testcase: gcc-4.9/x86_64-rhel/1/debian-x86_64-2015-02-07.cgz/nhm-white/shell1/unixbench commit: 402c43ed2d7433d7a0a4cf2767bedc239f680155 8fb47ff100af48034eb11449a81f42af24213987 402c43ed2d7433d7 8fb47ff100af48034eb11449a8 ---------------- -------------------------- %stddev %change %stddev \ | \ 1555 ± 0% -3.2% 1506 ± 0% unixbench.score 286697 ± 0% -7.0% 266678 ± 0% unixbench.time.involuntary_context_switches 17730295 ± 0% -3.1% 17172749 ± 0% unixbench.time.minor_page_faults 616646 ± 0% -3.1% 597250 ± 0% unixbench.time.voluntary_context_switches 288.75 ± 0% -3.0% 280.00 ± 0% turbostat.Avg_MHz 1956505 ± 12% -39.9% 1176054 ± 8% cpuidle.C1E-NHM.time 7033 ± 4% -18.0% 5765 ± 1% cpuidle.C1E-NHM.usage 14204 ± 0% -2.8% 13801 ± 0% vmstat.system.cs 1628 ± 0% +43.3% 2332 ± 0% vmstat.system.in 2855 ± 1% -11.1% 2538 ± 1% sched_debug.cfs_rq:/.exec_clock.stddev 43.25 ± 19% -39.3% 26.25 ± 18% sched_debug.cfs_rq:/.load_avg.2 20.00 ± 5% +135.0% 47.00 ± 68% sched_debug.cfs_rq:/.load_avg.7 15987 ± 3% -14.5% 13672 ± 1% sched_debug.cfs_rq:/.min_vruntime.stddev 0.33 ± 14% +38.1% 0.45 ± 5% sched_debug.cfs_rq:/.nr_running.avg 2.00 ± 79% +450.0% 11.00 ± 19% sched_debug.cfs_rq:/.runnable_load_avg.2 5.55 ± 19% +34.1% 7.44 ± 10% sched_debug.cfs_rq:/.runnable_load_avg.avg -33720 ± -1% -17.3% -27894 ± -4% sched_debug.cfs_rq:/.spread0.4 -33413 ± -3% -13.7% -28847 ± -3% sched_debug.cfs_rq:/.spread0.5 -33146 ± -3% -18.0% -27185 ± -1% sched_debug.cfs_rq:/.spread0.6 -33527 ± -1% -12.8% -29230 ± -2% sched_debug.cfs_rq:/.spread0.7 -17639 ± -2% -16.2% -14779 ± -4% sched_debug.cfs_rq:/.spread0.avg -34541 ± -1% -14.2% -29641 ± -2% sched_debug.cfs_rq:/.spread0.min 15990 ± 3% -14.5% 13674 ± 1% sched_debug.cfs_rq:/.spread0.stddev 708107 ± 10% +22.0% 863894 ± 5% sched_debug.cpu.avg_idle.0 13049 ± 44% -37.5% 8162 ± 38% sched_debug.cpu.curr->pid.6 22214 ± 0% -13.1% 19305 ± 0% sched_debug.cpu.curr->pid.max 9922 ± 4% -7.6% 9164 ± 1% sched_debug.cpu.curr->pid.stddev 29.00 ± 12% +162.1% 76.00 ± 36% sched_debug.cpu.load.2 124.75 ± 61% -63.1% 46.00 ± 42% sched_debug.cpu.load.3 15.50 ± 92% +343.5% 68.75 ± 59% sched_debug.cpu.load.4 54.67 ± 33% +43.6% 78.50 ± 3% sched_debug.cpu.load.7 0.35 ± 11% +28.9% 0.45 ± 11% sched_debug.cpu.nr_running.avg 8.52 ± 15% +29.7% 11.06 ± 10% sched_debug.cpu.nr_uninterruptible.stddev 25833 ± 0% +9.4% 28264 ± 2% sched_debug.cpu.ttwu_local.3 18030 ± 2% +10.7% 19951 ± 1% sched_debug.cpu.ttwu_local.5 17450 ± 1% +9.8% 19158 ± 1% sched_debug.cpu.ttwu_local.6 nhm-white: Nehalem Memory: 6G unixbench.score 1560 ++-------------------------------------------------------------------+ | .*. .*. .*. .*.*.*.. .*. .*. .*.*.*. .*.*.*.*.* | 1550 *+*.*.*.* * *.*.*.* * * *.* * * | 1540 ++ | | | 1530 ++ | | | 1520 ++ | | | 1510 ++ O O O O O O O | 1500 ++ O O O O O O O O O O O O O O O O O O | 1490 ++ O O O O O O O O O | | O | 1480 ++-------------------------------------------------------------------+ unixbench.time.minor_page_faults 1.78e+07 ++---------------------------------------------------------------+ | .**.*.* | 1.77e+07 *+*.*.*.*.**.*.*.*.*.*.*.*.*.*.*.**.*.*.*.*.*.*.*.*.* | 1.76e+07 ++ | | | 1.75e+07 ++ | 1.74e+07 ++ | | | 1.73e+07 ++ | 1.72e+07 ++ | | O O O OO O O O O O 1.71e+07 O+O O O O O O | 1.7e+07 ++ O O OO O O O O O O | | O O O O O OO O | 1.69e+07 ++---------------------------------------------------------------+ unixbench.time.voluntary_context_switches 620000 ++-----------------------------------------------------------------+ | .*. | 615000 *+*.*.*.*.*.*.*. .*.*.*.*.*.*.**. .*.*.*.*.*.*.*.*.* *.* | | *.*.* * | | | 610000 ++ | | | 605000 ++ | | | 600000 ++ | | O O O | | O O O O O O O 595000 ++ O O O O O O | O O O O O O O O O O O | 590000 ++----------------O-------O-O-O-O-OO-O-----------------------------+ unixbench.time.involuntary_context_switches 290000 ++-----------------------------------------------------------------+ *.*.*.*. .*.*.*.*.*. .*. .*. .*.*.*.* | 285000 ++ * *.*.*.*.*.* **.*.*.*.*.*.* *.* | | | 280000 ++ | | | 275000 ++ | | | 270000 ++ | | O O O O O O O O O 265000 ++ O | O O O O | 260000 ++ O O O | | O O O O O O O O O O OO O O O O O O | 255000 ++-----------------------------------------------------------------+ vmstat.system.in 2400 ++-------------------------------------------------------------------+ | O O O O O O O O O O O O O O O 2200 O+O O O O O O O O O O O O O O O O O O O | | | 2000 ++ | | | 1800 ++ | | | 1600 *+*.*.*.*.*.*.*.*.*.*.*.* *.* *.*.* *.* *.*.*.* | | : : + : : : + : | 1400 ++ : : *..* : : : *.* : | | * : : * : : | 1200 ++ :: :: | | * * | 1000 ++-------------------------------------------------------------------+ [*] bisect-good sample [O] bisect-bad sample To reproduce: git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml 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, Ying Huang