* Davidlohr Bueso <davidlohr@xxxxxx> wrote: > On Wed, 2013-11-13 at 09:25 -0800, tip-bot for Peter Zijlstra wrote: > > Commit-ID: 911b2898b3c9fe0048e9485ad1629ed4fce330fd > > Gitweb: http://git.kernel.org/tip/911b2898b3c9fe0048e9485ad1629ed4fce330fd > > Author: Peter Zijlstra <peterz@xxxxxxxxxxxxx> > > AuthorDate: Mon, 11 Nov 2013 18:21:56 +0100 > > Committer: Ingo Molnar <mingo@xxxxxxxxxx> > > CommitDate: Wed, 13 Nov 2013 13:33:54 +0100 > > > > sched: Optimize task_sched_runtime() > > > > Large multi-threaded apps like to hit this using do_sys_times() and > > then queue up on the rq->lock. > > > > Avoid when possible. > > > > Larry reported ~20% performance increase his test case. > > > > Reported-by: Larry Woodman <lwoodman@xxxxxxxxxx> > > Suggested-by: Paul Turner <pjt@xxxxxxxxxx> > > Signed-off-by: Peter Zijlstra <peterz@xxxxxxxxxxxxx> > > Cc: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx> > > Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> > > Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> > > Link: http://lkml.kernel.org/r/20131111172925.GG26898@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx > > Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> > > For what it's worth: > > Tested-by: Davidlohr Bueso <davidlohr@xxxxxx> Thanks for the testing - the change is upstream already and unless it causes regressions it will be part of the v3.13 kernel. Thanks, Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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