From: Andrew Walrond <andrew@walrond.org>
To: linux-raid@vger.kernel.org
Subject: Re: RAID1 & 2.6.9 performance problem
Date: Mon, 17 Jan 2005 16:24:47 +0000 [thread overview]
Message-ID: <200501171624.47645.andrew@walrond.org> (raw)
In-Reply-To: <Pine.LNX.4.56.0501171528010.21510@lion.drogon.net>
On Monday 17 January 2005 15:39, Gordon Henderson wrote:
> On Mon, 17 Jan 2005, Janusz Zamecki wrote:
>
> > I've expected much better /dev/md6 performance (at least 100MB/s).
>
> I wouldn't - use RAID-0 if you want more performance.
>
FWIW I get these results with RAID-0
andrew@orac ~ $ sudo hdparm -t /dev/sda /dev/sdb /dev/md0
/dev/sda:
Timing buffered disk reads: 170 MB in 3.00 seconds = 56.64 MB/sec
/dev/sdb:
Timing buffered disk reads: 170 MB in 3.02 seconds = 56.37 MB/sec
/dev/md0:
Timing buffered disk reads: 236 MB in 3.02 seconds = 78.08 MB/sec
next prev parent reply other threads:[~2005-01-17 16:24 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-17 15:22 RAID1 & 2.6.9 performance problem Janusz Zamecki
2005-01-17 15:39 ` Gordon Henderson
2005-01-17 15:51 ` Hans Kristian Rosbach
2005-01-17 16:46 ` Peter T. Breuer
2005-01-18 13:18 ` Hans Kristian Rosbach
2005-01-18 13:43 ` Peter T. Breuer
2005-01-17 20:49 ` Janusz Zamecki
2005-01-17 16:24 ` Andrew Walrond [this message]
2005-01-17 16:51 ` Is this hdparm -t output correct? (was Re: RAID1 & 2.6.9 performance problem) Andy Smith
2005-01-17 17:04 ` Andrew Walrond
2005-01-17 18:26 ` RAID1 Corruption Markus Gehring
2005-01-17 19:14 ` Paul Clements
2005-01-17 19:35 ` Tony Mantler
2005-01-17 19:42 ` Markus Gehring
2005-01-17 19:21 ` Sven Anders
2005-01-18 17:32 ` RAID1 & 2.6.9 performance problem J. Ryan Earl
2005-01-18 17:34 ` J. Ryan Earl
2005-01-18 18:41 ` Janusz Zamecki
2005-01-18 19:18 ` J. Ryan Earl
2005-01-18 19:34 ` Janusz Zamecki
2005-01-18 19:12 ` Janusz Zamecki
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