From: Keld Simonsen <keld@keldix.com>
To: John Robinson <john.robinson@anonymous.org.uk>
Cc: Marco <jjletho67-diar@yahoo.it>, Roman Mamedov <roman@rm.pp.ru>,
linux-raid@vger.kernel.org
Subject: Re: raid1 performance
Date: Mon, 26 Jul 2010 13:30:27 +0200 [thread overview]
Message-ID: <20100726113027.GA14118@rap.rap.dk> (raw)
In-Reply-To: <4C4D6916.9060801@anonymous.org.uk>
On Mon, Jul 26, 2010 at 11:53:10AM +0100, John Robinson wrote:
> On 26/07/2010 11:24, Keld Simonsen wrote:
> [...]
> >Did you try:
> >
> ># Set read-ahead.
> >echo "Setting read-ahead to 64 MiB for /dev/md3"
> >blockdev --setra 65536 /dev/md3
>
> That'll set read-ahead to 32MiB, because blockdev works in sectors.
Thanks for the correction, updated on wiki.
keld
next prev parent reply other threads:[~2010-07-26 11:30 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-25 14:58 raid1 performance Marco
2010-07-25 15:19 ` Roman Mamedov
2010-07-26 9:37 ` Marco
2010-07-26 10:24 ` Keld Simonsen
2010-07-26 10:53 ` John Robinson
2010-07-26 11:30 ` Keld Simonsen [this message]
2010-07-27 16:10 ` Marco
2010-07-26 11:03 ` Neil Brown
2010-07-27 1:23 ` Leslie Rhorer
2010-07-27 16:10 ` Marco
2010-07-27 22:23 ` Neil Brown
2010-07-28 12:10 ` Marco
2010-07-28 12:24 ` Neil Brown
2010-07-31 15:21 ` Marco
2010-07-31 16:04 ` Keld Simonsen
-- strict thread matches above, loose matches on Subject: below --
2010-07-19 12:14 Marco
2004-04-21 5:57 RAID1: Performance Mike Mestnik
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