From: Avi Kivity <avi@argo.co.il>
To: fitzboy <fitzboy@iparadigms.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: tuning for large files in xfs
Date: Mon, 22 May 2006 22:36:21 +0300 [thread overview]
Message-ID: <447212B5.1010208@argo.co.il> (raw)
In-Reply-To: <447211E1.7080207@iparadigms.com>
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.
next prev parent reply other threads:[~2006-05-22 19:36 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-22 18:57 tuning for large files in xfs fitzboy
2006-05-22 19:15 ` Avi Kivity
2006-05-22 19:32 ` fitzboy
2006-05-22 19:36 ` Avi Kivity [this message]
2006-05-23 0:40 ` fitzboy
2006-05-23 8:05 ` Avi Kivity
2006-05-23 20:21 ` fitzboy
2006-05-24 8:12 ` Avi Kivity
2006-05-22 22:22 ` Miquel van Smoorenburg
2006-05-22 22:30 ` Matheus Izvekov
2006-05-23 0:42 ` fitzboy
2006-05-23 1:07 ` Matheus Izvekov
2006-05-22 22:51 ` Nathan Scott
2006-05-23 0:49 ` fitzboy
2006-05-23 1:59 ` Nathan Scott
2006-05-24 1:41 ` fitzboy
2006-05-24 2:23 ` Nathan Scott
2006-05-25 19:15 ` fitzboy
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