From: "Keld Jørn Simonsen" <keld@dkuug.dk>
To: "Mr. James W. Laferriere" <babydr@baby-dragons.com>
Cc: Richard Scobie <richard@sauce.co.nz>,
linux-raid maillist <linux-raid@vger.kernel.org>
Subject: Re: Benchmarks: Linux Kernel RAID vs a Hardware RAID setup
Date: Wed, 16 Jul 2008 06:17:56 +0200 [thread overview]
Message-ID: <20080716041756.GA7148@rap.rap.dk> (raw)
In-Reply-To: <Pine.LNX.4.64.0807151851110.32734@filesrv1.baby-dragons.com>
On Tue, Jul 15, 2008 at 06:52:59PM -0800, Mr. James W. Laferriere wrote:
> Hello Richard ,
>
> On Wed, 16 Jul 2008, Richard Scobie wrote:
> >Mr. James W. Laferriere wrote:
> >> At what level (2.6.26) does one set readahead ?
> >> I've searched 'mount' , 'mdadm' , 'Documentation/md.txt' . Where
> >>else should I look ? Obviously I am missing something .
> >
> >Hi Jim,
> >
> >/sbin/blockdev --setra 65536 /dev/md5 gets it done here.
> >
> >Regards,
> >Richard
>
> This does not bode well for my memory , It's already in my
> optimizations shell script for startup . I thought it looked very familiar
> , But the usual places didn't bring it up .
There is a note on the wiki for preformance
Best regards
keld
next prev parent reply other threads:[~2008-07-16 4:17 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-15 14:06 Benchmarks: Linux Kernel RAID vs a Hardware RAID setup Ben Martin
2008-07-15 14:42 ` Justin Piszcz
2008-07-16 4:14 ` Ben Martin
2008-07-15 15:46 ` Michal Soltys
2008-07-15 20:34 ` Richard Scobie
2008-07-16 2:34 ` Mr. James W. Laferriere
2008-07-16 2:48 ` Richard Scobie
2008-07-16 2:52 ` Mr. James W. Laferriere
2008-07-16 4:17 ` Keld Jørn Simonsen [this message]
2008-07-16 5:50 ` Michal Soltys
2008-07-16 3:36 ` Ben Martin
2008-07-16 3:55 ` Richard Scobie
2008-07-16 7:00 ` Dan Williams
2008-07-16 17:08 ` thomas62186218
2008-07-16 19:34 ` Richard Scobie
2008-07-15 16:39 ` Keld Jørn Simonsen
2008-07-15 16:50 ` thomas62186218
2008-07-15 17:39 ` Keld Jørn Simonsen
2008-07-16 0:01 ` Richard Scobie
2008-07-16 0:20 ` Jon Nelson
2008-07-16 4:06 ` Ben Martin
2008-07-16 15:42 ` Ben Martin
2008-07-16 4:23 ` Keld Jørn Simonsen
2008-07-16 5:18 ` Richard Scobie
2008-07-16 8:17 ` Keld Jørn Simonsen
2008-07-15 17:06 ` Jon Nelson
2008-07-16 3:44 ` Ben Martin
2008-07-15 18:40 ` Brad Campbell
2008-07-15 20:12 ` Keld Jørn Simonsen
2008-07-21 16:55 ` Bill Davidsen
2008-07-23 7:45 ` Keld Jørn Simonsen
2008-07-23 10:29 ` Brad Campbell
[not found] ` <487CF499.6080105@harddata.com>
2008-07-15 20:15 ` Keld Jørn Simonsen
2008-07-16 3:58 ` Ben Martin
2008-07-16 4:47 ` Keld Jørn Simonsen
2008-07-21 16:58 ` Bill Davidsen
2008-07-15 19:41 ` Keld Jørn Simonsen
2008-07-16 3:25 ` Ben Martin
2008-07-15 20:40 ` Peter Grandi
2008-07-16 3:38 ` Eric Sandeen
2008-07-16 18:54 ` Alan D. Brunelle
2008-07-17 8:26 ` Ben Martin
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