From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755323Ab2DWUVM (ORCPT ); Mon, 23 Apr 2012 16:21:12 -0400 Received: from casper.infradead.org ([85.118.1.10]:60488 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755283Ab2DWUVK (ORCPT ); Mon, 23 Apr 2012 16:21:10 -0400 Subject: Re: Inconsistent load average on tickless kernels From: Peter Zijlstra To: Jonathan Nieder Cc: =?UTF-8?Q?Les=C5=82aw_Kope=C4=87?= , Aman Gupta , linux-kernel@vger.kernel.org, Chase Douglas , Damien Wyart , Kyle McMartin , Venkatesh Pallipadi , Doug Smythies , Thomas Gleixner In-Reply-To: <20120423175715.GD9635@burratino> References: <1330532667.11248.153.camel@twins> <1330534998.11248.158.camel@twins> <4F551ABE.5080605@nasza-klasa.pl> <1330989903.11248.261.camel@twins> <1330990360.11248.264.camel@twins> <1330990413.11248.265.camel@twins> <4F8D678C.6050104@nasza-klasa.pl> <20120417153032.GB21534@burratino> <4F958141.2000505@nasza-klasa.pl> <20120423175715.GD9635@burratino> Content-Type: text/plain; charset="UTF-8" Date: Mon, 23 Apr 2012 22:21:06 +0200 Message-ID: <1335212466.2463.85.camel@laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.32.2 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2012-04-23 at 12:57 -0500, Jonathan Nieder wrote: > Lesław Kopeć wrote: > > > 2.6.32.55-hz-0f004f5a69 9.88 > > 2.6.32.55-no-hz-74f5187ac8 2.48 > > 2.6.32.55-no-hz-c308b56b53 2.22 > > 3.0.28-hz 10.66 > > 3.0.28-no-hz 0.60 > > 3.0.28-no-hz-c308b56b53 4.09 > > 3.0.28-no-hz-c308b56b53 nohz=off 6.78 > > 3.2.12-hz 10.16 > > 3.2.12-no-hz 0.66 > > 3.2.12-no-hz-c308b56b53 4.36 > > > > What's worth noting is that I haven't seen any nasty side effects of the > > latest patch on all kernel versions that I've tested. Hope that helps. > > Ok. > > Peter, do you think it would make sense to add c308b56b53987 to 3.0.y > and newer stable kernels? If anybody is still maintaining those and cares enough to do the work, sure whatever.. ;)