Messages in this thread | | | Date | Wed, 7 Dec 2022 22:24:55 +0800 | From | Chen Yu <> | Subject | Re: [PATCH v3 1/2] sched/fair: Introduce short duration task check |
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Hi Josh, On 2022-12-06 at 18:23:47 -0800, Josh Don wrote: > > We don't want to add more dedicated knobs. So using > > sysctl_sched_min_granularity as you are doing in this patch looks ok > > If not a knob, then maybe at least a smaller hardcoded value? Several > milliseconds seems like too long for this optimization; the > opportunity cost of not doing the idle search likely doesn't make > sense if the waker is going to be active for several additional > milliseconds. I would have guessed something on the order of 100us. > > Chen, what is the run duration of tasks in your ping pong example? OK, I'll measure the duration of all the tests and summarize the data later.
thanks, Chenyu
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