Messages in this thread | | | From | Vincent Guittot <> | Date | Mon, 27 Feb 2017 10:44:02 +0100 | Subject | Re: [LKP] [lkp-developer] [sched/fair] 4e5160766f: +149% ftq.noise.50% regression |
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Hi Ying,
On 21 February 2017 at 03:40, Huang, Ying <ying.huang@intel.com> wrote: > Hi, Vincent, > > Vincent Guittot <vincent.guittot@linaro.org> writes: >
[snip]
>>> >>> Here is the test result, >>> >>> ========================================================================================= >>> compiler/cpufreq_governor/freq/kconfig/nr_task/rootfs/samples/tbox_group/test/testcase: >>> gcc-6/powersave/20/x86_64-rhel-7.2/100%/debian-x86_64-2016-08-31.cgz/6000ss/lkp-hsw-d01/cache/ftq >>> >>> commit: >>> 4e5160766fcc9f41bbd38bac11f92dce993644aa: first bad commit >>> 09a43ace1f986b003c118fdf6ddf1fd685692d49: parent of first bad commit >>> b524060933c546fd2410c5a09360ba23a0fef846: with fix patch above >>> >>> 4e5160766fcc9f41 09a43ace1f986b003c118fdf6d b524060933c546fd2410c5a093 >>> ---------------- -------------------------- -------------------------- >>> %stddev %change %stddev %change %stddev >>> \ | \ | \ >>> 3463 ± 10% -61.4% 1335 ± 17% -3.0% 3359 ± 2% ftq.noise.50% >>> 1116 ± 23% -73.7% 293.90 ± 30% -23.8% 850.69 ± 17% ftq.noise.75% >> >> To be honest, I was expecting at least the same level of improvement >> as the previous patch if not better but i was not expecting worse >> results > > What's your next plan for this regression? At least your previous patch > could recover part of it.
I haven't been able to find better fix than the previous patch so i'm going to send a clean version with proper commit message
Regards, Vincent
> > Best Regards, > Huang, Ying
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