Messages in this thread | | | Subject | Re: [PATCH 4/4] sched,time: only call account_{user,sys,guest,idle}_time once a jiffy | From | Rik van Riel <> | Date | Mon, 1 Feb 2016 14:23:39 -0500 |
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On 02/01/2016 04:29 AM, Peter Zijlstra wrote: > On Sun, Jan 31, 2016 at 09:12:31PM -0500, riel@redhat.com wrote: >> Run times for the microbenchmark: >> >> 4.4 3.8 seconds >> 4.5-rc1 3.7 seconds >> 4.5-rc1 + first patch 3.3 seconds >> 4.5-rc1 + first 3 patches 3.1 seconds >> 4.5-rc1 + all patches 2.3 seconds > > Would be good to compare that also to a !NOHZ_FULL bloated path.
On a non-nohz_full, non-housekeeping CPU, I see 1.86 seconds run time, or about 20% faster than on a nohz_full CPU with all patches applied.
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