Dietmar Eggemann <dietmar.eggem...@arm.com> writes: > Hi Ying, > > On 24/09/15 03:00, kernel test robot wrote: >> FYI, we noticed the below changes on >> >> https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched/core >> commit 98d8fd8126676f7ba6e133e65b2ca4b17989d32c ("sched/fair: Initialize >> task load and utilization before placing task on rq") >> >> >> ========================================================================================= >> tbox_group/testcase/rootfs/kconfig/compiler/nr_threads/mode/ipc: >> >> lkp-ws02/hackbench/debian-x86_64-2015-02-07.cgz/x86_64-rhel/gcc-4.9/1600%/process/pipe >> >> commit: >> 231678b768da07d19ab5683a39eeb0c250631d02 >> 98d8fd8126676f7ba6e133e65b2ca4b17989d32c >> >> 231678b768da07d1 98d8fd8126676f7ba6e133e65b >> ---------------- -------------------------- >> %stddev %change %stddev >> \ | \ >> 188818 ± 1% -20.8% 149585 ± 1% hackbench.throughput > > [...] > >> >> lkp-ws02: Westmere-EP >> Memory: 16G >> >> >> >> >> hackbench.time.involuntary_context_switches >> >> 3e+08 ++------------------------O---------------------------------------+ >> O O O O O | >> 2.5e+08 ++ O O O O O >> | O O O O | >> | O O O O | >> 2e+08 ++ O | >> | O | >> 1.5e+08 ++ | >> | | >> 1e+08 ++ | >> | .*...*..*..*...*..* | >> *..*...*..*..*...*.. .*.. ..*..*. | >> 5e+07 ++ *. *. | >> | | >> 0 ++----------------------------------------------------------------+ >> >> vmstat.system.in >> >> 300000 ++-----------------------------------------------------------------+ >> | O O O | >> O O O O O | >> 250000 ++ O O O O >> | O | >> | O O O O O O | >> 200000 ++ O O | >> | | >> 150000 ++ | >> | | >> | | >> 100000 ++ | >> | .*... .*..*...*..*..*...* | >> *..*...*..*. *.. .*... .*...*. | >> 50000 ++------------------*------*---------------------------------------+ >> >> [*] 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 > > I try to recreate this on one of my Intel machines (Xeon CPU E5-2650 v2 > @ 2.60GHz) w/ 16 logical cpus. We haven't seen anything near a 20% > performance degradation for hackbench when we were running our hackbench > tests on 5/6 core arm machines as well as on a IVB-EP (2*10*2) Intel > machine. > > So I cloned the repo: > > # git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg > /lkp-tests.git lkp-tests > > and ran the hackbench example: > > root # lkp install $LKP_SRC/jobs/hackbench.yaml > > root # lkp split-job $LKP_SRC/jobs/hackbench.yaml > > root # lkp run ./hackbench-50%-threads-socket.yaml > > 2015-10-12 19:27:20 /usr/bin/hackbench -g 8 --threads -l 60000 > Running in threaded mode with 8 groups using 40 file descriptors each > (== 320 tasks) > Each sender will pass 60000 messages of 100 bytes > ... > wait for background monitors: perf-profile uptime proc-vmstat proc-stat > meminfo slabinfo interrupts softirqs diskstats cpuidle turbostat sched_debug > > root # lkp result hackbench > > /result/hackbench/50%-threads-socket-50/$MACHINE/ubuntu/defconfig/gcc-4.8/3.16.0-50-generic/0/
There is a 'stats.json' file in this directory, where you can find your test result. > But I can't get any statistics out of it? > > root # lkp stat hackbench > runs sum average stddev% case You need to specify more option for 'lkp stat', please take a look at 'lkp stat -h' help message. Best Regards, Huang, Ying > Thanks for your help in advance! > > -- Dietmar > > [...] -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
