Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752432Ab3JGE6G (ORCPT ); Mon, 7 Oct 2013 00:58:06 -0400 Received: from mail-wi0-f182.google.com ([209.85.212.182]:39267 "EHLO mail-wi0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752143Ab3JGE5z (ORCPT ); Mon, 7 Oct 2013 00:57:55 -0400 MIME-Version: 1.0 In-Reply-To: <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> <1381120901.9926.11.camel@marge.simpson.net> Date: Mon, 7 Oct 2013 12:57:54 +0800 Message-ID: Subject: Re: [PATCH V3]hrtimer: Fix a performance regression by disable reprogramming in remove_hrtimer From: Ethan Zhao To: Mike Galbraith Cc: Peter Zijlstra , Ingo Molnar , LKML , Thomas Gleixner , rjw@sisk.pl, Daniel Lezcano , linux-pm@vger.kernel.org, Len Brown Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 993 Lines: 26 Got it. On Mon, Oct 7, 2013 at 12:41 PM, Mike Galbraith wrote: > 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 > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/