Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261237AbVFACTk (ORCPT ); Tue, 31 May 2005 22:19:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261239AbVFACSF (ORCPT ); Tue, 31 May 2005 22:18:05 -0400 Received: from mail24.syd.optusnet.com.au ([211.29.133.165]:43748 "EHLO mail24.syd.optusnet.com.au") by vger.kernel.org with ESMTP id S261237AbVFACOR (ORCPT ); Tue, 31 May 2005 22:14:17 -0400 From: Con Kolivas To: Pekka Enberg Subject: Re: Machine Freezes while Running Crossover Office Date: Wed, 1 Jun 2005 10:07:26 +1000 User-Agent: KMail/1.8 Cc: Ingo Molnar , Linus Torvalds , Pekka Enberg , Kernel Mailing List References: <84144f0205052911202863ecd5@mail.gmail.com> <20050531184101.GA3175@elte.hu> <1117574407.9231.3.camel@localhost> In-Reply-To: <1117574407.9231.3.camel@localhost> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200506011007.26650.kernel@kolivas.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1384 Lines: 30 On Wed, 1 Jun 2005 07:20 am, Pekka Enberg wrote: > On Tue, 2005-05-31 at 20:41 +0200, Ingo Molnar wrote: > > Now, assuming you can confirm that doing: > > > > echo 5 > /proc/sys/kernel/INTERACTIVE_DELTA > > The hang goes away with a magic number of 6 (although it does not seem > as smooth as with turning off interactivity completely). With 5, I still > get the hang but it is noticeable shorter than before. Number 4 gives me > the same old hang. > > Ingo, are there other patches you wanted me to try out? Generally when I was playing with it I found that if something was critically dependant on the _value_ of a tunable rather than the algorithm design, it would simply take a different piece of hardware or test case to induce the problem, and the algorithm would have to be changed instead of tweaking the parameters. This will require a some thought as to the design and an algorithm change for the long term rather than tweaking a value :-| None of this behaviour existed when the interactivity code went in during 2.5 and I could never have anticipated this pipe design change coming and affecting it in this way. Con - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/