From: Asdo <asdo@shiftmail.org>
To: Tomasz Chmielewski <mangoo@wpkg.org>
Cc: linux-raid <linux-raid@vger.kernel.org>
Subject: Re: Disappointing RAID10 Performance
Date: Sat, 17 Oct 2009 18:12:20 +0200 [thread overview]
Message-ID: <4AD9ECE4.3090202@shiftmail.org> (raw)
In-Reply-To: <4AD8BBC3.4030600@wpkg.org>
Tomasz Chmielewski wrote:
> If you start using your drives for two "dd if=bigfile[12]
> of=/dev/null" at the same time, you will notice the difference.
OT: Does this dd line really work? I did see it elsewhere already but
doesn't appear to work for me: seems to see only the last if=. I don't
think multiple input or output files are supported.
For this kind of tests I was doing a for loop with background dd comands
( trailing & ) IIRC
This would be a good dd feature to simplify linux-raid performance
testing though.
next prev parent reply other threads:[~2009-10-17 16:12 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-16 17:32 Disappointing RAID10 Performance adfas asd
2009-10-16 17:36 ` Majed B.
2009-10-16 18:10 ` Rob Becker
2009-10-16 21:05 ` adfas asd
2009-10-21 23:26 ` Bill Davidsen
2009-10-16 18:30 ` Tomasz Chmielewski
2009-10-17 16:12 ` Asdo [this message]
2009-10-17 16:20 ` Tomasz Chmielewski
2009-10-17 21:35 ` Majed B.
2009-10-18 11:01 ` Michael Tokarev
2009-10-16 21:20 ` Christopher Chen
2009-10-18 12:06 ` adfas asd
2009-10-16 21:27 ` Keld Jørn Simonsen
2009-10-17 6:03 ` Leslie Rhorer
2009-10-18 12:17 ` adfas asd
[not found] <7bc80d500910161433l49cbf599m80310082b6fdaa97@mail.gmail.com>
2009-10-18 12:14 ` adfas asd
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