From: arjan@fenrus.demon.nl (Arjan van de Ven)
To: ppetru@ppetru.net (Petru Paler)
Cc: linux-kernel@vger.kernel.org
Subject: Re: RAID1 read balancing
Date: Mon, 12 Feb 2001 10:34:10 +0100 (CET) [thread overview]
Message-ID: <m14SFN4-000OaIC@amadeus.home.nl> (raw)
In-Reply-To: <20010211161242.A949@ppetru.net>
In article <20010211161242.A949@ppetru.net> you wrote:
> For a RAID1 array built of two disks on two separate SCSI controllers,
> are the reads balanced between the two controllers (for higher speed) ?
With the current RAID1 setup, you will NOT get a speed increase for
single-threaded, sequential reading programs (read: benchmarks like hdparm
and tiobench)[1]. You will get improvents in all other cases.
Greetings,
Arjan van de Ven
[1] This can be fix by a 10 line patch, however this changes the on-disk
layout.
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next prev parent reply other threads:[~2001-02-12 9:34 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-02-11 14:12 Petru Paler
2001-02-12 9:34 ` Arjan van de Ven [this message]
2001-02-12 11:36 ` Jorge Boncompte (DTI2)
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