From: "Keld Jørn Simonsen" <keld@dkuug.dk>
To: Franck Routier <franck.routier@axege.com>
Cc: linux-raid <linux-raid@vger.kernel.org>
Subject: Re: Understanding bonnie++ results
Date: Sat, 1 Mar 2008 03:05:12 +0100 [thread overview]
Message-ID: <20080301020512.GA6657@rap.rap.dk> (raw)
In-Reply-To: <1204273482.9381.66.camel@franck-gusty>
On Fri, Feb 29, 2008 at 09:24:42AM +0100, Franck Routier wrote:
> By the way, my server in not really in a production state, and the
> hardware is running, so I might take some time to do sensible tests if
> anyone has ideas of what a good test would be...
I would like you to investigate why random writes are so relatively
slow with raid10,f2. You could run the bonnie+ tests, and then watch
via an iostat how each of the disks are performing, compared to a
HW RAID10.
And also see if it matters if the resync has completed or not.
Best regards
keld
>
> > I like to get such results of comparison between HW and SW raid.
> > How advanced are Adaptec controllers considered these days?
> > My thoughts are that SW raid is faster than HW raid, because Neil and the
> > other people here together can develop more sophisticated algorithms,
> > but I would like some hard figures to back up that thought.
>
>
> --
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next prev parent reply other threads:[~2008-03-01 2:05 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-28 9:46 Understanding bonnie++ results Franck Routier
2008-02-28 19:06 ` Keld Jørn Simonsen
2008-02-29 8:19 ` Franck Routier
[not found] ` <20080229090238.GA3717@rap.rap.dk>
2008-02-29 9:26 ` Franck Routier
2008-02-29 9:32 ` Franck Routier
2008-02-29 8:24 ` Franck Routier
2008-03-01 2:05 ` Keld Jørn Simonsen [this message]
2008-03-01 20:04 ` Bill Davidsen
2008-03-01 20:25 ` Franck Routier
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