Message-ID: <447212B5.1010208@argo.co.il>
Date: Mon, 22 May 2006 22:36:21 +0300
From: Avi Kivity <avi@argo.co.il>
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To: fitzboy <fitzboy@iparadigms.com>
CC: linux-kernel@vger.kernel.org
Subject: Re: tuning for large files in xfs
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fitzboy wrote:
> That makes sense, but how come the numbers for the large file (2TB)
> doesn't seem to match with the Avg. Seek Time that 15k drives have? Avg
> Seek Time for those drives are in the 5ms range, and I assume they
> aren't just seeking in the first couple tracks when they come up with
> that number (and Bonnie++ confirms this too). Any thoughts on why it is
> double for me when I use the drives?
>

What's your testing methodology?

You can try to measure the amount of seeks going to the disk by using 
iostat, and see if that matches your test program.

-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.

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