From owner-freebsd-scsi  Tue Jul 25 23: 4:47 2000
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Date: Tue, 25 Jul 2000 22:43:31 -0700 (PDT)
From: Tom Samplonius <tom@sdf.com>
To: "Chris D. Faulhaber" <jedgar@fxp.org>
Cc: The Hermit Hacker <scrappy@hub.org>, freebsd-scsi@freebsd.org
Subject: Re: 4.1RC read/write speeds ...
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On Tue, 25 Jul 2000, Chris D. Faulhaber wrote:

> > Writing the 232 Megabyte file, 'iozone.tmp'...14.273438 seconds
> > Reading the file...3.328125 seconds
...
> You may want to try without the quirk entry.
...
>                  * Best performance with these drives is achieved with
>                  * tagged queueing turned off, and write caching turned
...

  Tagged command queueing isn't a factor if you are only doing one IO at a
time, which is exactly what a single iozone process does.

Tom



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