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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=447212B5.1010208@argo.co.il \
--to=avi@argo.co.il \
--cc=fitzboy@iparadigms.com \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox