From: Mads Peter Bach <mpb@hum.auc.dk>
To: linux-raid@vger.kernel.org
Subject: Re: Performance difference between two raid0 arrays on same drives?
Date: Sat, 12 Jul 2003 17:49:32 +0200 [thread overview]
Message-ID: <3F102E0C.1000108@hum.auc.dk> (raw)
In-Reply-To: <200307121537.33889.michel@ket.kth.se>
Michel Bellais wrote:
> You're right, I thought about it too, but the fastest array is built with
> partitions closer to the centre of the disk, so it should be the slowest
> indeed.
> The disks are big (180 Gb), the partitions represent less than 10% of it and
> follow each others. It cannot explain 30% difference in performance.
You can test the performance across your drives with the program zcav
(which should come with bonnie++ - if not, take a look at
http://www.coker.com.au/bonnie++/)
--
Mads Peter Bach
Systemadministrator, Det Humanistiske Fakultet, Aalborg Universitet
Kroghstræde 3 - 5.111, DK-9220 Aalborg Øst - (+45) 96358062
# whois MPB1-DK@whois.dk-hostmaster.dk
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next prev parent reply other threads:[~2003-07-12 15:49 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-07-12 13:37 Performance difference between two raid0 arrays on same drives? Michel Bellais
2003-07-12 15:20 ` Gordon Henderson
2003-07-12 16:06 ` Michel Bellais
2003-07-16 18:11 ` A simple question Donghui Wen
2003-07-12 15:49 ` Mads Peter Bach [this message]
2003-07-12 18:59 ` Performance difference between two raid0 arrays on same drives? Michel Bellais
-- strict thread matches above, loose matches on Subject: below --
2003-07-11 16:13 Michel
2003-07-12 4:36 ` Gregory Leblanc
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