| To: | b.j.smith@xxxxxxxx |
|---|---|
| Subject: | Re: [UNSURE] Re: mkfs options for a 16x hw raid5 and xfs (mostly large files) |
| From: | Justin Piszcz <jpiszcz@xxxxxxxxxxxxxxx> |
| Date: | Wed, 26 Sep 2007 13:27:28 -0400 (EDT) |
| Cc: | Ralf Gross <Ralf-Lists@xxxxxxxxxxxx>, linux-xfs@xxxxxxxxxxx |
| In-reply-to: | <295084.46754.qm@xxxxxxxxxxxxxxxxxxxxxxxxxxx> |
| References: | <295084.46754.qm@xxxxxxxxxxxxxxxxxxxxxxxxxxx> |
| Sender: | xfs-bounce@xxxxxxxxxxx |
On Wed, 26 Sep 2007, Bryan J. Smith wrote: Ralf Gross <Ralf-Lists@xxxxxxxxxxxx> wrote:Still 170-200 MB/s. The command above just tunes the read ahead value.Don't expect your commits to an external subsystem to be anywhere near as fast as software RAID in simple disk benchmarks. -- Bryan J. Smith Professional, Technical Annoyance b.j.smith@xxxxxxxx http://thebs413.blogspot.com -------------------------------------------------- Fission Power: An Inconvenient Solution So what tunables do the 9550/9650SE users utilize to achieve > 500 MiB/s write on HW RAID5/6? Justin. |
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