From: Marc Bevand <bevand_m@epita.fr>
To: linux-raid@vger.kernel.org
Subject: Re: SATA chipset recomendations
Date: Wed, 09 Jun 2004 17:37:24 +0200 [thread overview]
Message-ID: <ca7b0u$ngr$1@sea.gmane.org> (raw)
In-Reply-To: <40C6ECEE.8090706@dgreaves.com>
David Greaves wrote:
> I have wondered whether I'd have been better off with 2x Promise TX2s?
> I don't know where the bottleneck is with 4xSATA disks on a single
> Promise/PCI slot
I have 4 x Seagate 160GB SATA connected on a Promise SATA150 TX4. The
bottleneck is always the PCI bus:
o 66 MHz PCI bus (266 MB/s): I reach 209 MB/s (79% of theoretical bandwidth)
o 33 MHz PCI bus (133 MB/s): I reach 100 MB/s (75% of theoretical bandwidth)
Note: each disk is able to generate a datas rate of about 57 MB/s.
--
Marc Bevand http://www.epita.fr/~bevand_m
Computer Science School EPITA - System, Network and Security Dept.
next prev parent reply other threads:[~2004-06-09 15:37 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-06-09 1:12 SATA chipset recomendations chris
2004-06-09 4:41 ` John Lange
2004-06-09 7:59 ` David Greaves
2004-06-09 7:08 ` Måns Rullgård
2004-06-09 10:33 ` Nick Maynard
2004-06-09 10:56 ` David Greaves
2004-06-09 11:36 ` Måns Rullgård
2004-06-09 15:37 ` Marc Bevand [this message]
2004-06-09 13:51 ` Lars Gaarden
2004-06-09 8:44 ` Brad Campbell
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