From: David Brown <david.brown@hesbynett.no>
To: linux-raid@vger.kernel.org
Subject: Re: single cpu thread performance limit?
Date: Fri, 12 Aug 2011 11:04:31 +0200 [thread overview]
Message-ID: <j22qav$bmf$1@dough.gmane.org> (raw)
In-Reply-To: <4E44340D.7060402@gmail.com>
On 11/08/11 21:57, Joe Landman wrote:
> On 08/11/2011 03:37 PM, mark delfman wrote:
>
>
>> Whilst a R0 on top of the R1/10's does offer some increase in
>> performance, linear does not :(
>
> Linear makes no sense for distributing IO's among many devices. Linear
> is a concatenation.
>
If the real-world application involves parallel access to lots of
different files, then XFS on a linear concatenation /will/ make sense,
if your allocation groups match your concatenated devices. It won't
give you faster access to any of the files, but it will let you have
fast access to several files at the same time. Of course, YMMV
according to the setup and application.
next prev parent reply other threads:[~2011-08-12 9:04 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-11 15:58 single cpu thread performance limit? mark delfman
2011-08-11 16:01 ` Mathias Burén
2011-08-11 16:07 ` mark delfman
2011-08-11 18:58 ` Stan Hoeppner
2011-08-11 19:37 ` mark delfman
2011-08-11 19:57 ` Joe Landman
2011-08-12 9:04 ` David Brown [this message]
2011-08-11 20:51 ` Stan Hoeppner
2011-08-12 1:05 ` Stan Hoeppner
2011-08-12 12:48 ` Asdo
2011-08-12 13:23 ` mark delfman
2011-08-12 14:23 ` Asdo
2011-08-12 20:51 ` Stan Hoeppner
2011-08-11 19:04 ` Bernd Schubert
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