From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752919Ab0JCKMO (ORCPT ); Sun, 3 Oct 2010 06:12:14 -0400 Received: from ist.d-labs.de ([213.239.218.44]:41512 "EHLO mx01.d-labs.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752151Ab0JCKMN (ORCPT ); Sun, 3 Oct 2010 06:12:13 -0400 Date: Sun, 3 Oct 2010 12:12:09 +0200 From: Florian Mickler To: Peter Zijlstra Cc: tmhikaru@gmail.com, linux-kernel@vger.kernel.org, Greg KH , Chase Douglas , Ingo Molnar Subject: Re: PROBLEM: Unusually high load average when idle in 2.6.35, 2.6.35.1 and later Message-ID: <20101003121209.586f7b6b@schatten.dmk.lab> In-Reply-To: <1286095268.2144.119.camel@laptop> References: <20101001035321.GA2360@roll> <20101001094814.GA5029@roll> <20101003030254.GA4901@roll> <1286095268.2144.119.camel@laptop> X-Mailer: Claws Mail 3.7.6cvs31 (GTK+ 2.20.1; x86_64-unknown-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, 03 Oct 2010 10:41:08 +0200 Peter Zijlstra wrote: > On Sat, 2010-10-02 at 23:02 -0400, tmhikaru@gmail.com wrote: > > The load average statistic is indeed broken somehow, and I > > did bisect it down to where the problem began, however there seems to be no > > performance problem related to it I can find. > > Chase, anything you can see broken with this stuff? Peter, do you think it would be worthwile to test a kernel with the low load-averages in NOHZ=disable mode? The bisected commit claims to fix a NOHZ issue with the load average. So if the new figures are the correct ones, they should be somehow similar to the figures before with NOHZ? Or am I on the wrong track here? Regards, Flo