Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265541AbTFRVQ4 (ORCPT ); Wed, 18 Jun 2003 17:16:56 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265543AbTFRVQ4 (ORCPT ); Wed, 18 Jun 2003 17:16:56 -0400 Received: from 153.Red-213-4-13.pooles.rima-tde.net ([213.4.13.153]:62987 "EHLO small.felipe-alfaro.com") by vger.kernel.org with ESMTP id S265541AbTFRVQv (ORCPT ); Wed, 18 Jun 2003 17:16:51 -0400 Subject: Re: O(1) scheduler starvation From: Felipe Alfaro Solana To: Mike Galbraith Cc: davidm@hpl.hp.com, LKML In-Reply-To: <5.2.0.9.2.20030618163055.02758e18@pop.gmx.net> References: <5.2.0.9.2.20030618113653.0277d780@pop.gmx.net> <5.2.0.9.2.20030618113653.0277d780@pop.gmx.net> <5.2.0.9.2.20030618163055.02758e18@pop.gmx.net> Content-Type: text/plain Message-Id: <1055971842.585.2.camel@teapot.felipe-alfaro.com> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.0 Date: 18 Jun 2003 23:30:43 +0200 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1608 Lines: 29 On Wed, 2003-06-18 at 17:54, Mike Galbraith wrote: > >To make XMMS skip, just force the X server to do a lot of repainting, > >for example, by dragging a big window slowly enough over another one > >which requires a lot of painting (Evolution, for example, is a good > >candidate as it requires a lot of CPU to repaint uncovered areas). It's > >easy to reproduce just after launching XMMS. However, after a while, it > >gets difficult to make XMMS to skip sound (it seems the scheduler > >adjusts priorities well enough). This is on a PIII 700Mhz laptop with no > >niced processes at all. > > Thanks. I don't have evolution on my linux box (pine/vi/procmail > rules). ImageMagic ought to give X more than enough spurts of frenetic > activity though. Do you have that, and does image manipulation make xmms > stutter as well? Just moving windows around and changing backgrounds > doesn't do anything here. (500mhz piii/128mb ram btw) In fact, I can only make XMMS skip sound for a very brief period, just after starting it up. After a few seconds, it seems the dynamic priorities are adjusted and I can't make XMMS skip sound anymore. To reproduce it, open up a big window, then launch XMMS and make it play some MP3 file. Then, start moving the big window around. For me, this causes XMMS to skip sound for a brief period of time (~5 seconds, approx). - 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/