From: "Ragnar Kjørstad" <kernel@ragnark.vestdata.no>
To: Roy Sigurd Karlsbakk <roy@karlsbakk.net>
Cc: linux-kernel@vger.kernel.org, lars.nakkerud@compaq.com
Subject: Re: Tuning Linux for high-speed disk subsystems
Date: Tue, 13 Nov 2001 17:43:26 +0100 [thread overview]
Message-ID: <20011113174326.A32405@vestdata.no> (raw)
In-Reply-To: <Pine.LNX.4.30.0111131519440.933-100000@mustard.heime.net>
In-Reply-To: <Pine.LNX.4.30.0111131519440.933-100000@mustard.heime.net>; from roy@karlsbakk.net on Tue, Nov 13, 2001 at 03:29:13PM +0100
On Tue, Nov 13, 2001 at 03:29:13PM +0100, Roy Sigurd Karlsbakk wrote:
> After some testing at Compaq's lab in Oslo, I've come to the conclusion
> that Linux cannot scale higher than about 30-40MB/sec in or out of a
> hardware or software RAID-0 set with several stripe/chunk sizes tried out.
Eh, we do 60-70 MB/s reads and 110-120 MB/s writes on our RAIDs... from
linux.
> Does anyone know this stuff good enough to help me how to tune the system?
> PS: The CPUs were almost idle during the test. Tested file system was
> ext2.
I'd say you should get rid of your compaq raid controller and use a
regular SCSI-controller - 66Mhz 64 bit. (e.g. an adaptec)
--
Ragnar Kjørstad
Big Storage
next prev parent reply other threads:[~2001-11-13 16:43 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-11-13 14:29 Tuning Linux for high-speed disk subsystems Roy Sigurd Karlsbakk
2001-11-13 16:43 ` Ragnar Kjørstad [this message]
2001-11-13 16:51 ` Alan Cox
2001-11-13 17:59 ` Craig I. Hagan
2001-11-13 16:18 ` Marcelo Tosatti
2001-11-14 10:33 ` Roy Sigurd Karlsbakk
2001-11-14 10:35 ` Roy Sigurd Karlsbakk
2001-11-13 20:00 ` Dan Hollis
-- strict thread matches above, loose matches on Subject: below --
2001-11-13 15:58 Jesse Pollard
2001-11-13 20:38 Torrey Hoffman
2001-11-16 2:56 Dieter Nützel
2001-11-16 11:51 ` Roy Sigurd Karlsbakk
2001-11-16 15:24 ` Dieter Nützel
[not found] <3B6867E6CB09B24385A73719A50C7C9A79791F@athena.boxxtech.com>
2001-11-16 16:53 ` Marvin Justice
2001-11-22 10:15 Martin Knoblauch
2001-11-22 16:30 ` Andreas Dilger
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