From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1767704AbXCJBC6 (ORCPT ); Fri, 9 Mar 2007 20:02:58 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1767706AbXCJBC5 (ORCPT ); Fri, 9 Mar 2007 20:02:57 -0500 Received: from mail20.syd.optusnet.com.au ([211.29.132.201]:49903 "EHLO mail20.syd.optusnet.com.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1767704AbXCJBC4 (ORCPT ); Fri, 9 Mar 2007 20:02:56 -0500 From: Con Kolivas To: Willy Tarreau Subject: Re: 2.6.21-rc3-mm1 RSDL results Date: Sat, 10 Mar 2007 12:02:25 +1100 User-Agent: KMail/1.9.5 Cc: Matt Mackall , linux-kernel , akpm@linux-foundation.org References: <20070309053931.GA10459@waste.org> <20070309215716.GK943@1wt.eu> <200703100912.07792.kernel@kolivas.org> In-Reply-To: <200703100912.07792.kernel@kolivas.org> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200703101202.25814.kernel@kolivas.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Saturday 10 March 2007 09:12, Con Kolivas wrote: > On Saturday 10 March 2007 08:57, Willy Tarreau wrote: > > On Fri, Mar 09, 2007 at 03:39:59PM -0600, Matt Mackall wrote: > > > On Sat, Mar 10, 2007 at 08:19:18AM +1100, Con Kolivas wrote: > > > > On Saturday 10 March 2007 08:07, Con Kolivas wrote: > > > > > On Saturday 10 March 2007 07:46, Matt Mackall wrote: > > > 5x memload: good > > > 5x execload: good > > > 5x forkload: good > > > 5 parallel makes: mostly good > > > make -j 5: bad > > > > > > So what's different between makes in parallel and make -j 5? Make's > > > job server uses pipe I/O to control how many jobs are running. > > > > Matt, could you check with plain 2.6.20 + Con's patch ? It is possible > > that he added bugs when porting to -mm, or that someting in -mm causes > > the trouble. Your experience with -mm seems so much different from mine > > with mainline, there must be a difference somewhere ! > > Good idea. It's all very odd Matt. It really isn't behaving anything like you describe for myself or others. It sounds more like a real bug than what the design would do at all. The only things that are different on yours is Beryl and a different graphics card. When you're comparing to mainline are you comparing -mm1 to -mm2 to ensure something else from -mm isn't responsible? Also have you tried rsdl on 2.6.20 as Willy suggested? I would really love to get to the bottom of this as it really shouldn't behave that way under load no matter how the load is dished out. Thanks! -- -ck