From: Florian Weimer <fweimer@bfk.de>
To: Tobias Oetiker <tobi@oetiker.ch>
Cc: linux-btrfs@vger.kernel.org
Subject: Re: Benchmarking btrfs on HW Raid ... BAD
Date: Mon, 28 Sep 2009 08:17:59 +0000 [thread overview]
Message-ID: <82tyynxz2g.fsf@mid.bfk.de> (raw)
In-Reply-To: <alpine.DEB.2.00.0909280955400.11292@sebohet.brgvxre.pu> (Tobias Oetiker's message of "Mon\, 28 Sep 2009 10\:06\:07 +0200 \(CEST\)")
* Tobias Oetiker:
> Running this on a single disk, I get the quite acceptable results.
> When running on-top of a Areca HW Raid6 (lvm partitioned)
> then both read and write performance go down by at least 2
> magnitudes.
Does the HW RAID use write caching (preferably battery-backed)?
--=20
=46lorian Weimer <fweimer@bfk.de>
BFK edv-consulting GmbH http://www.bfk.de/
Kriegsstra=DFe 100 tel: +49-721-96201-1
D-76133 Karlsruhe fax: +49-721-96201-99
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next prev parent reply other threads:[~2009-09-28 8:17 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-28 8:06 Benchmarking btrfs on HW Raid ... BAD Tobias Oetiker
2009-09-28 8:17 ` Florian Weimer [this message]
2009-09-28 9:19 ` Tobias Oetiker
2009-09-28 9:19 ` Daniel J Blueman
2009-09-28 9:39 ` Tobias Oetiker
2009-09-30 14:35 ` Ric Wheeler
2009-09-30 18:44 ` Tobias Oetiker
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