From: David Greaves <david@dgreaves.com>
To: David Chinner <dgc@sgi.com>
Cc: Justin Piszcz <jpiszcz@lucidpixels.com>,
linux-raid@vger.kernel.org, xfs@oss.sgi.com,
Alan Piszcz <ap@solarrain.com>
Subject: Re: Fastest Chunk Size w/XFS For MD Software RAID = 1024k
Date: Thu, 28 Jun 2007 08:53:54 +0100 [thread overview]
Message-ID: <46836912.4000508@dgreaves.com> (raw)
In-Reply-To: <20070628050837.GG989688@sgi.com>
David Chinner wrote:
> On Wed, Jun 27, 2007 at 07:20:42PM -0400, Justin Piszcz wrote:
>> For drives with 16MB of cache (in this case, raptors).
>
> That's four (4) drives, right?
I'm pretty sure he's using 10 - email a few days back...
>>>>>> Justin Piszcz wrote:
>>>>> Running test with 10 RAPTOR 150 hard drives, expect it to take
>>>>> awhile until I get the results, avg them etc. :)
> If so, how do you get a block read rate of 578MB/s from
> 4 drives? That's 145MB/s per drive....
Which gives a far more reasonable 60MB/s per drive...
David
next prev parent reply other threads:[~2007-06-28 7:53 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-27 23:20 Fastest Chunk Size w/XFS For MD Software RAID = 1024k Justin Piszcz
2007-06-27 23:20 ` Justin Piszcz
2007-06-27 23:24 ` Justin Piszcz
2007-06-28 5:08 ` David Chinner
2007-06-28 7:53 ` David Greaves [this message]
2007-06-28 8:07 ` Justin Piszcz
2007-06-28 3:43 ` Peter Rabbitson
2007-06-28 8:07 ` Justin Piszcz
2007-06-28 8:24 ` Peter Rabbitson
2007-06-28 8:27 ` Justin Piszcz
2007-06-28 8:36 ` Peter Rabbitson
2007-06-28 8:38 ` Justin Piszcz
2007-07-03 4:23 ` Mr. James W. Laferriere
2007-07-03 8:42 ` Justin Piszcz
2007-06-28 8:42 ` Justin Piszcz
2007-06-28 8:46 ` Justin Piszcz
2007-06-28 22:05 ` David Chinner
2007-06-28 9:05 ` Matti Aarnio
2007-06-28 11:19 ` Justin Piszcz
2007-06-28 13:27 ` Jon Nelson
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=46836912.4000508@dgreaves.com \
--to=david@dgreaves.com \
--cc=ap@solarrain.com \
--cc=dgc@sgi.com \
--cc=jpiszcz@lucidpixels.com \
--cc=linux-raid@vger.kernel.org \
--cc=xfs@oss.sgi.com \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.