From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755508Ab1K2R4H (ORCPT ); Tue, 29 Nov 2011 12:56:07 -0500 Received: from cantor2.suse.de ([195.135.220.15]:52838 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753580Ab1K2R4F (ORCPT ); Tue, 29 Nov 2011 12:56:05 -0500 Date: Tue, 29 Nov 2011 18:56:03 +0100 From: Michal Hocko To: Ian Kumlien Cc: linux-kernel@vger.kernel.org, rjw@sisk.pl, tino.keitel@tikei.de, t.artem@lycos.com Subject: Re: [REGRESSION] [Linux 3.2] top/htop and all other CPU usage Message-ID: <20111129175537.GA10356@tiehlicka.suse.cz> References: <20111128222803.GA4925@pomac.netswarm.net> <20111129075242.GB2675@tiehlicka.suse.cz> <1322587860.4061.6.camel@pi> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1322587860.4061.6.camel@pi> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue 29-11-11 18:31:00, Ian Kumlien wrote: > On tis, 2011-11-29 at 08:52 +0100, Michal Hocko wrote: > > On Mon 28-11-11 23:28:03, pomac@vapor.com wrote: > > > Hi, > > > > > > All this time i have been thinking i'm the only one - and i've been to > > > loaded with work during working hours and tired when home =P > > > > > > Anyways, I've neen seeing this since -rc1 on: > > > Intel(R) Core(TM) i5 CPU U520 @ 1.07GHz - x86-64 > > > AMD Phenom(tm) II X6 1090T - x86-64 > > > AMD Athlon(tm) 64 X2 Dual Core Processor 4400+ - x86-64 > > > Intel(R) Core(TM)2 CPU T7200 @ 2.00GHz - i686 > > > > > > Configs available on demand - I've been running the same config for > > > quite some time though. > > > > As I have written in other email could you post your config and collect > > the following data? > > for i in `seq 30`; > > do > > cat /proc/stat > `date +'%s'` > > sleep 1 > > done > > export old_user=0 old_nice=0 old_sys=0 old_idle=0 old_iowait=0; > > > > # for all your available CPUs > > grep cpu0 * | while read cpu user nice sys idle iowait rest; > > do > > echo $cpu $(($user-$old_user)) $(($nice-$old_nice)) $(($sys-$old_sys)) $(($idle-$old_idle)) $(($iowait-$old_iowait)) > > old_user=$user old_nice=$nice old_sys=$sys old_idle=$idle old_iowait=$iowait > > done > > Sorry, the previous one was AMD X2 4400+ and now the T7200: > > 1322587696:cpu0 1410110 148 368843 357890604 357890604 > 1322587697:cpu0 0 0 1 0 0 > 1322587698:cpu0 1 0 1 0 0 > 1322587699:cpu0 2 0 1 0 0 > 1322587700:cpu0 0 0 1 0 0 > 1322587701:cpu0 0 0 1 0 0 > 1322587702:cpu0 0 0 1 0 0 > 1322587703:cpu0 1 0 0 0 0 > 1322587704:cpu0 0 0 0 0 0 > 1322587705:cpu0 0 0 1 0 0 > 1322587706:cpu0 1 0 1 0 0 > 1322587707:cpu0 0 0 1 0 0 > 1322587708:cpu0 1 0 0 0 0 > 1322587709:cpu0 1 0 0 0 0 > 1322587711:cpu0 0 0 2 0 0 > 1322587712:cpu0 0 0 0 0 0 > 1322587713:cpu0 1 0 1 0 0 > 1322587714:cpu0 1 0 0 0 0 > 1322587715:cpu0 1 0 1 0 0 > 1322587716:cpu0 1 0 0 0 0 > 1322587717:cpu0 0 0 1 0 0 > 1322587718:cpu0 1 0 1 0 0 > 1322587719:cpu0 0 0 1 0 0 > 1322587720:cpu0 0 0 0 0 0 > 1322587721:cpu0 2 0 1 0 0 > 1322587722:cpu0 1 0 0 0 0 > 1322587723:cpu0 0 0 3 0 0 > 1322587724:cpu0 1 0 0 0 0 > 1322587725:cpu0 0 0 0 0 0 > 1322587726:cpu0 0 0 1 0 0 OK, so the same thing as in another email in the thread (no idle/io_wait accounting). Could you double check what kind of idle driver are you using? cat /sys/devices/system/cpu/cpuidle/current_driver -- Michal Hocko SUSE Labs SUSE LINUX s.r.o. Lihovarska 1060/12 190 00 Praha 9 Czech Republic