Subject: Re: Support for 3ware Escalade 7000 series on 1.5 or 1.6? (xs4)
To: Curt Sampson <firstname.lastname@example.org>
From: Thor Lancelot Simon <email@example.com>
Date: 09/08/2002 23:42:10
On Mon, Sep 09, 2002 at 12:26:43PM +0900, Curt Sampson wrote:
> On Fri, 6 Sep 2002, Thor Lancelot Simon wrote:
> > Performance is pretty good.
> Well, it depends on what you're doing. If you're doing lots of small,
> random I/O, performance isn't so hot. The 7850 I was using seemed to be
> limited to about 120-150 I/Os per second regardless of the number of
> drives or how they were configured (even if configured as JBOD!). That's
> hardly even even twice the 60-90 I/OPS I could get from a single one of
> the drives on that controller.
I don't understand that; we see several times those numbers both on the
anoncvs machine with a 6410, and on the FTP server with a 7850. The I/O
sizes are probably a bit larger, but they're still pretty random.