linux-kernel - Re: Very high IOWait during all disk activity

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Date:	Fri, 29 Feb 2008 17:00:42 +0100
From:	Tomasz Chmielewski <mangoo@...g.org>
To:	Gordon Mckeown <ml_lkml@...fluffyone.net>
Cc:	LKML <linux-kernel@...r.kernel.org>
Subject: Re: Very high IOWait during all disk activity

Gordon Mckeown schrieb:

(...)

> Unfortunately this doesn't help explain why Windows XP on the same box
> can complete an "identical" copy operation in half the time. Perhaps
> it's just due to the different filesystems, or the way write caching
> works?

Did you, at least:

* made a NTFS on that drive for a Windows test
* made a ext3 on that same drive for a Linux test

Or, is Linux using partition A, and Windows using partition B?

If it's the latter, such tests are not very meaningful.

Also, you gave too few details to say anything meaningful, really (did 
you drop cache on both systems before starting copying? did you sync 
after copying on both systems to see how long does it take? etc.).

-- 
Tomasz Chmielewski
http://wpkg.org
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