From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Galbraith Subject: Re: [PATCH V3]hrtimer: Fix a performance regression by disable reprogramming in remove_hrtimer Date: Mon, 07 Oct 2013 06:41:41 +0200 Message-ID: <1381120901.9926.11.camel@marge.simpson.net> References: <24EECBCC-F655-404F-8946-73CC36095A5F@gmail.com> <1378362989.18435.2.camel@marge.simpson.net> <20130905111428.GB23362@gmail.com> <1378386697.6567.9.camel@marge.simpson.net> <20130905133750.GA26637@gmail.com> <1378445942.5434.31.camel@marge.simpson.net> <20130909122325.GX31370@twins.programming.kicks-ass.net> <1378730538.5586.30.camel@marge.simpson.net> <20130909133044.GB31370@twins.programming.kicks-ass.net> <20130909134635.GB26785@twins.programming.kicks-ass.net> <20130911085643.GS26785@twins.programming.kicks-ass.net> <1378895123.5476.83.camel@marge.simpson.net> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: Received: from moutng.kundenserver.de ([212.227.17.8]:61249 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751683Ab3JGEmj (ORCPT ); Mon, 7 Oct 2013 00:42:39 -0400 In-Reply-To: Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: Ethan Zhao Cc: Peter Zijlstra , Ingo Molnar , LKML , Thomas Gleixner , rjw@sisk.pl, daniel.lezcano@linaro.org, linux-pm@vger.kernel.org, lenb@kernel.org On Fri, 2013-10-04 at 20:06 +0800, Ethan Zhao wrote: > Mike, Peter, > Seems lots of work has been done these days, studious guys. those > patches merged in last stable/dev branch (fix performance regression > caused by extra rtimer programming and rescheduling IPI,confusing > idle... etc) ? So I could just do a lazy pull for test with my > environment. I need catch up with other mail loops with my vacation > again. Massive timer overhead seems to have crawled off and died while I wasn't looking. Peter's fix for IPI woes.. tip commit ea811747 sched, idle: Fix the idle polling state logic ..hasn't yet swum upstream. -Mike