| To: | David Chinner <dgc@xxxxxxx> |
|---|---|
| Subject: | Re: Fastest Chunk Size w/XFS For MD Software RAID = 1024k |
| From: | David Greaves <david@xxxxxxxxxxxx> |
| Date: | Thu, 28 Jun 2007 08:53:54 +0100 |
| Cc: | Justin Piszcz <jpiszcz@xxxxxxxxxxxxxxx>, linux-raid@xxxxxxxxxxxxxxx, xfs@xxxxxxxxxxx, Alan Piszcz <ap@xxxxxxxxxxxxx> |
| In-reply-to: | <20070628050837.GG989688@xxxxxxx> |
| References: | <Pine.LNX.4.64.0706271918010.29111@xxxxxxxxxxxxxxxx> <Pine.LNX.4.64.0706271920350.29111@xxxxxxxxxxxxxxxx> <20070628050837.GG989688@xxxxxxx> |
| Sender: | xfs-bounce@xxxxxxxxxxx |
| User-agent: | Mozilla-Thunderbird 2.0.0.4 (X11/20070618) |
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... Running test with 10 RAPTOR 150 hard drives, expect it to take awhile until I get the results, avg them etc. :)Justin Piszcz wrote: 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 |
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