From: Michal Soltys <nozo@ziu.info>
To: linux-raid@vger.kernel.org
Subject: Re: Help: very slow software RAID 5.
Date: Thu, 20 Sep 2007 20:16:41 +0200 [thread overview]
Message-ID: <46F2B909.7080903@ziu.info> (raw)
In-Reply-To: <20070919233137.7D5B2102365@medulla.enet.sharplabs.com>
Dean S. Messing wrote:
>
> Also (as I asked) what is the downside? From what I have read, random
> access reads will take a hit. Is this correct?
>
> Thanks very much for your help!
>
> Dean
>
Besides bonnie++ you should probably check iozone. It will allow you to test
very specific settings quite thoroughly. Although with current
multi-gigabyte memory systems the test runs may take a bit time.
http://www.iozone.org/
There's nice introduction to the progam there, along with some example graph
results.
next prev parent reply other threads:[~2007-09-20 18:16 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-18 23:09 Help: very slow software RAID 5 Dean S. Messing
2007-09-19 0:05 ` Justin Piszcz
2007-09-19 1:49 ` Dean S. Messing
2007-09-19 8:38 ` Justin Piszcz
2007-09-19 17:49 ` Dean S. Messing
2007-09-19 18:25 ` Justin Piszcz
2007-09-19 23:31 ` Dean S. Messing
2007-09-20 8:25 ` Justin Piszcz
2007-09-20 18:16 ` Michal Soltys [this message]
2007-09-20 19:06 ` Dean S. Messing
2007-09-20 15:33 ` Bill Davidsen
2007-09-20 18:47 ` Dean S. Messing
2007-09-20 21:08 ` Michael Tokarev
2007-09-21 0:58 ` Dean S. Messing
2007-09-21 13:00 ` Bill Davidsen
2007-09-21 20:01 ` Dean S. Messing
2007-09-21 20:21 ` Dean S. Messing
2007-09-25 9:31 ` Goswin von Brederlow
2007-09-25 18:16 ` Dean S. Messing
2007-09-25 21:46 ` Goswin von Brederlow
2007-09-25 23:50 ` Dean S. Messing
2007-09-26 1:45 ` Goswin von Brederlow
2007-09-27 6:23 ` Dean S. Messing
2007-09-27 9:51 ` Michal Soltys
2007-09-27 22:10 ` Backups w/ rsync (was: Help: very slow software RAID 5.) Dean S. Messing
2007-09-28 7:57 ` Backups w/ rsync Michael Tokarev
2007-09-28 10:23 ` Goswin von Brederlow
2007-09-28 11:18 ` Michal Soltys
2007-09-28 12:47 ` Goswin von Brederlow
2007-09-28 14:17 ` Michal Soltys
2007-09-29 0:11 ` Dean S. Messing
2007-09-29 8:43 ` Michael Tokarev
2007-09-28 14:48 ` Bill Davidsen
2007-09-28 14:57 ` Wolfgang Denk
2007-09-28 16:50 ` Bill Davidsen
2007-10-01 4:45 ` Michal Soltys
2007-09-28 15:11 ` Jon Nelson
2007-09-28 16:25 ` Bill Davidsen
2007-09-28 16:52 ` Jon Nelson
2007-09-27 22:40 ` Help: very slow software RAID 5 Bill Davidsen
2007-09-28 23:38 ` Dean S. Messing
2007-09-29 14:52 ` Bill Davidsen
2007-09-27 22:17 ` Bill Davidsen
2007-09-28 23:21 ` Dean S. Messing
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