linux-kernel - Re: SATA-performance: Linux vs. FreeBSD

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Date:	13 Feb 2007 12:18:21 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Arjan van de Ven <arjan@...radead.org>
Cc:	"Martin A. Fink" <fink@....mpg.de>,
	Matthias Schniedermeyer <ms@...d.de>,
	linux-kernel@...r.kernel.org
Subject: Re: SATA-performance: Linux vs. FreeBSD

Arjan van de Ven <arjan@...radead.org> writes:

> > > 
> > The problem is: FreeBSD is fast, but lacks of some special drivers. Linux has 
> > all drivers but access to harddisk is unpredictable and thus unreliable!
> > What can I do??
> 
> 
> there's several tunables you can do;

[...] Well Linux certainly should perform better out of the box
on such a simple configuration.

Something is wrong especially when the CPU usage is so high.

That is why I suggested oprofile. Perhaps contact linux-ide@...r.kernel.org
(if the results show driver problems) and linux-mm@...ck.org (otherwise) 
with the results.

-Andi
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