FYI, we noticed the below changes on git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master commit f9b61ff6bce9a44555324b29e593fdffc9a115bc ("drm/i915: Push vblank enable/disable past encoder->enable/disable")
testbox/testcase/testparams: lkp-t410/piglit/performance-igt-069 676fa5721c2eece4 f9b61ff6bce9a44555324b29e5 ---------------- -------------------------- %stddev %change %stddev \ | \ 6743 ± 0% +222.7% 21759 ± 6% piglit.time.voluntary_context_switches 73.50 ± 0% +178.7% 204.84 ± 0% piglit.time.elapsed_time.max 73.50 ± 0% +178.7% 204.84 ± 0% piglit.time.elapsed_time 5 ± 8% -61.9% 2 ± 0% piglit.time.percent_of_cpu_this_job_got 0 ± 0% +Inf% 1 ± 0% vmstat.procs.b 6743 ± 0% +222.7% 21759 ± 6% time.voluntary_context_switches 73.50 ± 0% +178.7% 204.84 ± 0% time.elapsed_time.max 73.50 ± 0% +178.7% 204.84 ± 0% time.elapsed_time 5 ± 8% -61.9% 2 ± 0% time.percent_of_cpu_this_job_got 229 ± 5% +101.5% 461 ± 5% time.involuntary_context_switches 1.37 ± 4% +63.3% 2.24 ± 3% time.system_time 9518 ± 0% -46.1% 5130 ± 5% vmstat.system.in 18657 ± 0% -44.9% 10286 ± 5% vmstat.system.cs lkp-t410: Westmere Memory: 2G piglit.time.elapsed_time 280 ++--------O-----------------------------------------------------------+ 260 ++ O | | | 240 ++ | 220 ++ | 200 O+O O O O O O OO O O O O O O O O O O O O O O O O OO O O O O O O O O 180 ++ | | | 160 ++ | 140 ++ * | 120 ++ :: | 100 ++ : : | | : : | 80 *+*.*.*.*.*.*.*.*.**.*.*.*.* *.*.*.*.*.*.* | 60 ++--------------------------------------------------------------------+ [*] bisect-good sample [O] bisect-bad sample To reproduce: apt-get install ruby git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git cd lkp-tests bin/setup-local job.yaml # the job file attached in this email bin/run-local 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
--- testcase: piglit default-monitors: wait: pre-test vmstat: default_watchdogs: watch-oom: watchdog: cpufreq_governor: performance commit: 5aeb2a3dc4f0ea47fe0df3cb3af75ef813dda833 model: Westmere memory: 2G hdd_partitions: "/dev/disk/by-id/ata-FUJITSU_MJA2250BH_G2_K95CT9C2G29W-part6" swap_partitions: rootfs_partition: "/dev/disk/by-id/ata-FUJITSU_MJA2250BH_G2_K95CT9C2G29W-part7" timeout: 30m piglit: group: igt-069 testbox: lkp-t410 tbox_group: lkp-t410 kconfig: x86_64-rhel enqueue_time: 2015-02-13 13:05:22.018177529 +08:00 head_commit: 5aeb2a3dc4f0ea47fe0df3cb3af75ef813dda833 base_commit: bfa76d49576599a4b9f9b7a71f23d73d6dcff735 branch: linux-devel/devel-hourly-2015021623 kernel: "/kernel/x86_64-rhel/5aeb2a3dc4f0ea47fe0df3cb3af75ef813dda833/vmlinuz-3.19.0-wl-ath-02305-g5aeb2a3" user: lkp queue: cyclic rootfs: debian-x86_64-2015-02-07.cgz result_root: "/result/lkp-t410/piglit/performance-igt-069/debian-x86_64-2015-02-07.cgz/x86_64-rhel/5aeb2a3dc4f0ea47fe0df3cb3af75ef813dda833/0" job_file: "/lkp/scheduled/lkp-t410/cyclic_piglit-performance-igt-069-x86_64-rhel-HEAD-5aeb2a3dc4f0ea47fe0df3cb3af75ef813dda833-0-20150213-66430-1vmm11b.yaml" dequeue_time: 2015-02-17 22:14:14.245245054 +08:00 nr_cpu: "$(nproc)" job_state: finished loadavg: 1.66 0.56 0.20 1/169 767 start_time: '1424182490' end_time: '1424182696' version: "/lkp/lkp/.src-20150217-210101"
echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor echo performance > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor echo performance > /sys/devices/system/cpu/cpu2/cpufreq/scaling_governor echo performance > /sys/devices/system/cpu/cpu3/cpufreq/scaling_governor piglit run igt -t igt/kms_flip/vblank-vs-dpms-suspend-interruptible /tmp/lkp/piglit-results-0 piglit summary console /tmp/lkp/piglit-results-0
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