From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758107AbYDLTU1 (ORCPT ); Sat, 12 Apr 2008 15:20:27 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754514AbYDLTUU (ORCPT ); Sat, 12 Apr 2008 15:20:20 -0400 Received: from mail.ift.unesp.br ([200.145.46.3]:40247 "EHLO mail.ift.unesp.br" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754111AbYDLTUT (ORCPT ); Sat, 12 Apr 2008 15:20:19 -0400 Date: Sat, 12 Apr 2008 16:19:14 -0300 From: "Carlos R. Mafra" To: Frederik Himpe Cc: linux-kernel@vger.kernel.org Subject: Re: Audio skipping with 2.6.24.4 and 2.6.25-rc9 Message-ID: <20080412191914.GA6573@localhost.ift.unesp.br> Mail-Followup-To: Frederik Himpe , linux-kernel@vger.kernel.org References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat 12.Apr'08 at 16:13:01 +0000, Frederik Himpe wrote: > I'm experiencing a lot of problems with audio skipping on my system. I am > using Rhythmbox as an audio player and have Compiz active. Whenever I > maximise or restore a maximised real transparent gnome-terminal, audio > skips. Compared to other normal applications, restoring the transparent > console is also slow (it takes a few seconds before the window appears). > > I ran cfs-debug-info-clear.sh, and the reproduced the problem 3 times by > restoring and minimising a gnome-terminal window. After that I ran cfs- > debug-info.sh, and I uploaded the information here: > http://artipc10.vub.ac.be/cfs-debug-info-2008.04.12-18.00.20.gz > > This problem happens with both 2.6.24.4 as with 2.6.25-rc9 (the debugging > information is from the latter version). I once learned ( http://lkml.org/lkml/2008/2/29/179 ) that the CFS would have something to do with the latencies I was observing in my system if se.wait_max was bigger than 40 msecs. It would be an "anomaly" in CFS. But in the log you uploaded you have only two se.wait_max greater than 40 msecs [mafra@localhost:~]$ grep se.wait_max cfs-debug-info-2008.04.12-18.00.20 |awk '{ {if ($3 > 40.000000) print $3} }' 44.153039 50.841370 As these numbers are only a bit greater than 40, I guess your problem is not related to the CFS scheduler. Can you try latencytop? ( www.latencytop.org ) Bye, Carlos