Date: Tue, 8 Sep 2009 01:38:00 -0700
From: Arjan van de Ven <arjan@infradead.org>
To: Nikos Chantziaras <realnc@arcor.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: BFS vs. mainline scheduler benchmarks and measurements
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In-Reply-To: <4AA6056A.4020106@arcor.de>
References: <20090906205952.GA6516@elte.hu>
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Organization: Intel
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On Tue, 08 Sep 2009 10:19:06 +0300
Nikos Chantziaras <realnc@arcor.de> wrote:

> latencytop has this to say:
> 
>    http://foss.math.aegean.gr/~realnc/pics/latop1.png
> 
> Though I don't really understand what this tool is trying to tell me,
> I hope someone does.

despite the untranslated content, it is clear that you have scheduler
delays (either due to scheduler bugs or cpu contention) of upto 68
msecs... Second in line is your binary AMD graphics driver that is
chewing up 14% of your total latency...


-- 
Arjan van de Ven 	Intel Open Source Technology Centre
For development, discussion and tips for power savings, 
visit http://www.lesswatts.org
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