Messages in this thread | | | Date | Fri, 11 Jul 2014 07:22:07 +0800 | From | Yuyang Du <> | Subject | Re: [PATCH 2/2] sched: Rewrite per entity runnable load average tracking |
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On Thu, Jul 10, 2014 at 12:08:59PM +0200, Peter Zijlstra wrote: > > Since clock_task is the regular clock minus some local amount, the > difference between two regular clock reads is always a strict upper > bound on clock_task differences. > This is inspiring. Regarding the clock source in load avg tracking, should we simply use rq_clock_task instead of cfs_rq_clock_task.
For the bandwidth control case, just update/increase the last_update_time when unthrottled by this throttled time, so the time would look like freezed. Am I understanding right?
Not sure how much bandwidth control is used, but even not used, every time we read cfs_rq_clock_task, will burn useless cycles here.
Thanks, Yuyang
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