linux-kernel - Re: CFS + Rhythmbox audio skipping

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Date:	Fri, 24 Aug 2007 16:57:43 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Frederik Himpe <fhimpe@...enet.be>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: CFS + Rhythmbox audio skipping


* Frederik Himpe <fhimpe@...enet.be> wrote:

> Some time ago, it was already discussed here that Rhythmbox would 
> easily cause audio skipping when running with the CFS scheduler 
> (http:// bhhdoa.org.au/pipermail/ck/2007-June/007886.html). It was 
> said to be a Rhythmbox problem, for which someone needed to open a bug 
> report. Well, I just did this, but the developer says he cannot 
> reproduce this, and denies that Rhythmbox is making any X calls in its 
> audio playback thread, so this bug is blocked for the moment.
> 
> http://bugzilla.gnome.org/show_bug.cgi?id=467437
> 
> It seems that there are people who know better what is wrong exactly. 
> Can somebody give some more details about what Rhythmbox is doing 
> wrong, either here, either in the bug ticket?

could you first check whether CFS v20.3:

   http://people.redhat.com/mingo/cfs-scheduler/

is it still showing the same symptoms with rhythmbox? If yes, what kind 
of load of yours is typically causing the Rhythmbox skipping? x11perf?

	Ingo
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