Groups > linux.kernel > #1207414

Re: [PATCH] sched: sync with the cfs_rq when changing sched class

From	Peter Zijlstra <peterz@infradead.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH] sched: sync with the cfs_rq when changing sched class
Date	2015-08-14 10:50 +0200
Message-ID	<pXiQy-5pg-3@gated-at.bofh.it> (permalink)
References	(1 earlier) <pWVqW-5f9-25@gated-at.bofh.it> <pWW3D-6do-9@gated-at.bofh.it> <pWXCq-7m-9@gated-at.bofh.it> <pX2C6-7ft-21@gated-at.bofh.it> <pXhrr-3w7-13@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Fri, Aug 14, 2015 at 07:20:20AM +0800, Yuyang Du wrote:
> sched: Provide sched class and priority change statistics to task
> 
> The sched class and priority changes make substantial impact for
> a task, but we really have not a quantitative understanding of how
> frequent they are, which makes it diffcult to work on many cases
> especially some corner cases. We privide it at task level.
> 
> Signed-off-by: Yuyang Du <yuyang.du@intel.com>

Sure we can do that. I would think its fairly rare on regular kernels,
whilst fairly common on -RT kernels where PI is much more active.
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Thread

[PATCH] sched: sync with the cfs_rq when changing sched class byungchul.park@lge.com - 2015-08-13 08:00 +0200
  Re: [PATCH] sched: sync with the cfs_rq when changing sched class Yuyang Du <yuyang.du@intel.com> - 2015-08-13 08:40 +0200
    Re: [PATCH] sched: sync with the cfs_rq when changing sched class Byungchul Park <byungchul.park@lge.com> - 2015-08-13 09:20 +0200
      Re: [PATCH] sched: sync with the cfs_rq when changing sched class Yuyang Du <yuyang.du@intel.com> - 2015-08-13 12:30 +0200
  Re: [PATCH] sched: sync with the cfs_rq when changing sched class Peter Zijlstra <peterz@infradead.org> - 2015-08-13 09:50 +0200
    Re: [PATCH] sched: sync with the cfs_rq when changing sched class Byungchul Park <byungchul.park@lge.com> - 2015-08-13 10:30 +0200
      Re: [PATCH] sched: sync with the cfs_rq when changing sched class Yuyang Du <yuyang.du@intel.com> - 2015-08-13 12:10 +0200
        Re: [PATCH] sched: sync with the cfs_rq when changing sched class Byungchul Park <byungchul.park@lge.com> - 2015-08-13 13:00 +0200
        Re: [PATCH] sched: sync with the cfs_rq when changing sched class Peter Zijlstra <peterz@infradead.org> - 2015-08-13 17:30 +0200
          Re: [PATCH] sched: sync with the cfs_rq when changing sched class Yuyang Du <yuyang.du@intel.com> - 2015-08-14 09:20 +0200
            Re: [PATCH] sched: sync with the cfs_rq when changing sched class Peter Zijlstra <peterz@infradead.org> - 2015-08-14 10:50 +0200
          Re: [PATCH] sched: sync with the cfs_rq when changing sched class Byungchul Park <byungchul.park@lge.com> - 2015-08-15 09:00 +0200
            Re: [PATCH] sched: sync with the cfs_rq when changing sched class Byungchul Park <byungchul.park@lge.com> - 2015-08-15 09:20 +0200
    Re: [PATCH] sched: sync with the cfs_rq when changing sched class Byungchul Park <byungchul.park@lge.com> - 2015-08-13 10:50 +0200
  Re: [PATCH] sched: sync with the cfs_rq when changing sched class "T. Zhou" <t.s.zhou@hotmail.com> - 2015-08-14 15:20 +0200
    Re: [PATCH] sched: sync with the cfs_rq when changing sched class Byungchul Park <byungchul.park@lge.com> - 2015-08-15 06:30 +0200
      Re: [PATCH] sched: sync with the cfs_rq when changing sched class "T. Zhou" <t.s.zhou@hotmail.com> - 2015-08-15 14:50 +0200

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