From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755761Ab0JTUZE (ORCPT ); Wed, 20 Oct 2010 16:25:04 -0400 Received: from mailhost-w0-m3.mangoosta.org ([78.40.49.225]:52883 "EHLO smtp-delay2.nerim.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755347Ab0JTUZD (ORCPT ); Wed, 20 Oct 2010 16:25:03 -0400 From: Damien Wyart To: Peter Zijlstra Cc: Chase Douglas , Ingo Molnar , tmhikaru@gmail.com, 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) 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> Date: Wed, 20 Oct 2010 22:24:37 +0200 In-Reply-To: <1287595605.3488.52.camel@twins> (Peter Zijlstra's message of "Wed, 20 Oct 2010 19:26:45 +0200") Message-ID: <87bp6ozk6y.fsf@free.fr> User-Agent: Gnus/5.110011 (No Gnus v0.11) Emacs/24.0.50 MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Peter Zijlstra [101020 19:26]: > OK, how does this work for people? I find my idle load is still a tad > high, but maybe I'm not patient enough. Looks quite fine after some basic tests, much saner than without the patch. A bit slow to go down, but I reach 0.00 after enough time being idle. Can't tell about the behavior after hours of uptime, of course, but the values during the first minutes after bootup seems OK; without the patch, they are evidently wrong... Maybe commit this after some more reviews in the next 1 or 2 days, and maybe think about further tweaking during 2.6.37? -- Damien