lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Mon, 18 Nov 2013 19:16:42 -0800 From: Davidlohr Bueso <davidlohr@...com> To: mingo@...nel.org, hpa@...or.com, linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org, peterz@...radead.org, pjt@...gle.com, akpm@...ux-foundation.org, tglx@...utronix.de, kosaki.motohiro@...fujitsu.com, lwoodman@...hat.com Cc: linux-tip-commits@...r.kernel.org Subject: Re: [tip:sched/urgent] sched: Optimize task_sched_runtime() 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@...radead.org> > AuthorDate: Mon, 11 Nov 2013 18:21:56 +0100 > Committer: Ingo Molnar <mingo@...nel.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 <lwoodman@...hat.com> > Suggested-by: Paul Turner <pjt@...gle.com> > Signed-off-by: Peter Zijlstra <peterz@...radead.org> > Cc: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com> > Cc: Linus Torvalds <torvalds@...ux-foundation.org> > Cc: Andrew Morton <akpm@...ux-foundation.org> > Link: http://lkml.kernel.org/r/20131111172925.GG26898@twins.programming.kicks-ass.net > Signed-off-by: Ingo Molnar <mingo@...nel.org> For what it's worth: Tested-by: Davidlohr Bueso <davidlohr@...com> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists