FYI, we noticed the below changes on https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master commit d6980ef32570e2a26e05b1183788f4b70f1f27d0 ("perf/x86/intel/uncore: Add Broadwell-EP uncore support") ========================================================================================= compiler/cpufreq_governor/kconfig/rootfs/tbox_group/test/testcase/testtime: gcc-4.9/powersave/x86_64-rhel/debian-x86_64-2015-02-07.cgz/lkp-bdw-ep1/all/aim9/5s commit: d3bcd64bbc35076a80c56918c905ddb167d097d8 d6980ef32570e2a26e05b1183788f4b70f1f27d0 d3bcd64bbc35076a d6980ef32570e2a26e05b11837 ---------------- -------------------------- %stddev %change %stddev \ | \ 2647573 ± 0% -33.2% 1768444 ± 2% aim9.brk_test.ops_per_sec 862.61 ± 0% -1.9% 845.93 ± 0% aim9.exec_test.ops_per_sec 543939 ± 1% -11.1% 483633 ± 2% aim9.page_test.ops_per_sec 5472098 ± 1% -5.7% 5160540 ± 1% aim9.time.minor_page_faults 1300 ± 12% -21.3% 1023 ± 15% slabinfo.blkdev_requests.active_objs 1300 ± 12% -21.3% 1023 ± 15% slabinfo.blkdev_requests.num_objs 650.93 ± 13% -22.4% 505.41 ± 18% sched_debug.cfs_rq:/.exec_clock.16 2224 ± 43% -44.9% 1225 ± 15% sched_debug.cpu.nr_switches.48 0.43 ±410% -566.7% -2.00 ±-130% sched_debug.cpu.nr_uninterruptible.28 2.57 ±148% -133.3% -0.86 ±-236% sched_debug.cpu.nr_uninterruptible.44 2229 ± 43% -44.7% 1232 ± 15% sched_debug.cpu.sched_count.48 1009 ± 49% -45.3% 552.43 ± 13% sched_debug.cpu.sched_goidle.48 2851 ± 35% -47.1% 1507 ± 44% sched_debug.cpu.ttwu_count.16 611.86 ± 34% +117.0% 1327 ± 71% sched_debug.cpu.ttwu_local.33 lkp-bdw-ep1: Broadwell-EP Memory: 48G aim9.brk_test.ops_per_sec 2.7e+06 ++-----------*----*-------------------*--*-*--*-------------------+ 2.6e+06 *+.*.*..*.*. *. *..*.*..*.*..*..* *..*. .*.*..*.*..* | *. | 2.5e+06 ++ | 2.4e+06 ++ | 2.3e+06 ++ | 2.2e+06 ++ | | | 2.1e+06 ++ | 2e+06 ++ | 1.9e+06 ++ | 1.8e+06 ++ O O O O O O O O O O O O | O O O O O O O O O O O O | 1.7e+06 ++ O | 1.6e+06 ++----------------------------------------------------------------+ [*] 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