From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753266Ab0JUIWq (ORCPT ); Thu, 21 Oct 2010 04:22:46 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:46037 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752552Ab0JUIWo (ORCPT ); Thu, 21 Oct 2010 04:22:44 -0400 Date: Thu, 21 Oct 2010 10:22:33 +0200 From: Ingo Molnar To: tmhikaru@gmail.com Cc: Peter Zijlstra , Damien Wyart , Chase Douglas , Thomas Gleixner , linux-kernel@vger.kernel.org, Venkatesh Pallipadi Subject: Re: High CPU load when machine is idle (related to PROBLEM: Unusually high load average when idle in 2.6.35, 2.6.35.1 and later) Message-ID: <20101021082233.GD8775@elte.hu> References: <20100929070153.GA2200@brouette> <20101014145813.GA2185@brouette> <20101020132732.GA30024@brouette> <1287581440.3488.16.camel@twins> <1287582208.3488.20.camel@twins> <1287584073.3488.22.camel@twins> <1287595605.3488.52.camel@twins> <20101021014843.GA21295@roll> <20101021015337.GA21384@roll> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20101021015337.GA21384@roll> User-Agent: Mutt/1.5.20 (2009-08-17) X-ELTE-SpamScore: -2.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.5 -2.0 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * tmhikaru@gmail.com wrote: > On Wed, Oct 20, 2010 at 09:48:43PM -0400, tm@ wrote: > > On Wed, Oct 20, 2010 at 07:26:45PM +0200, Peter Zijlstra wrote: > > > > > > > > > OK, how does this work for people? I find my idle load is still a tad > > > high, but maybe I'm not patient enough. > > > > I haven't had a chance to keep up with the topic, and I apologize. I'll be > > testing this as soon as I can finish compiling it. Thank you all for not > > letting this go unfixed. > > > > Tim McGrath > > Uhh, problem. This patch does not apply to git checkout > 74f5187ac873042f502227701ed1727e7c5fbfa9 > > which is the version of the kernel that first exhibits this flaw. > > which version of the kernel does this patch apply cleanly to? Try -tip (which includes the scheduler development tree as well): http://people.redhat.com/mingo/tip.git/README Thanks, Ingo