From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758524AbYDLUU1 (ORCPT ); Sat, 12 Apr 2008 16:20:27 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756518AbYDLUUM (ORCPT ); Sat, 12 Apr 2008 16:20:12 -0400 Received: from main.gmane.org ([80.91.229.2]:33121 "EHLO ciao.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756472AbYDLUUL (ORCPT ); Sat, 12 Apr 2008 16:20:11 -0400 X-Injected-Via-Gmane: http://gmane.org/ To: linux-kernel@vger.kernel.org From: Frederik Himpe Subject: Re: Audio skipping with 2.6.24.4 and 2.6.25-rc9 Date: Sat, 12 Apr 2008 20:19:55 +0000 (UTC) Message-ID: References: <20080412191914.GA6573@localhost.ift.unesp.br> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: 78-21-61-244.access.telenet.be User-Agent: Pan/0.132 (Waxed in Black) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 12 Apr 2008 16:19:14 -0300, Carlos R. Mafra wrote: > 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 ) I'm not too sure how I should use latencytop and interpret its results. I start latencytop, and reproduce the problem while rhythmbox is playing. It seems that it automatically changes the selected application in the bottom list after a few seconds, probably based on the CPU usage, where it selects most of the time either compiz or X. The upper half of latencytop is always empty, for all applications. In the lower half, it shows for all applications something like: Process X (7972) Scheduler: waiting for cpu 43.5 msec 43.5 msec Only the times differ between the different processes. And that's all... -- Frederik Himpe