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 <pet...@infradead.org> > AuthorDate: Mon, 11 Nov 2013 18:21:56 +0100 > Committer: Ingo Molnar <mi...@kernel.org> > 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 <lwood...@redhat.com> > Suggested-by: Paul Turner <p...@google.com> > Signed-off-by: Peter Zijlstra <pet...@infradead.org> > Cc: KOSAKI Motohiro <kosaki.motoh...@jp.fujitsu.com> > Cc: Linus Torvalds <torva...@linux-foundation.org> > Cc: Andrew Morton <a...@linux-foundation.org> > Link: > http://lkml.kernel.org/r/20131111172925.gg26...@twins.programming.kicks-ass.net > Signed-off-by: Ingo Molnar <mi...@kernel.org>
For what it's worth: Tested-by: Davidlohr Bueso <davidl...@hp.com> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
