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From: Wilko Bulte <wilko@yedi.iaf.nl>
Message-Id: <199702121916.UAA01229@yedi.iaf.nl>
Subject: Re: Problem with 3701B CD-ROM
To: gibbs@narnia.plutotech.com (Justin T. Gibbs)
Date: Wed, 12 Feb 1997 20:16:53 +0100 (MET)
Cc: se@FreeBSD.ORG, joerg_wunsch@uriah.heep.sax.de, robsch@robkaos.ruhr.de,
        freebsd-scsi@FreeBSD.ORG
In-Reply-To: <199702120334.UAA06394@narnia.plutotech.com> from "Justin T. Gibbs" at Feb 11, 97 08:34:36 pm
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As Justin T. Gibbs wrote...
> >> > That would mean they don't grok tagged queuing.
> >> 
> >> Like just about any CDROM drive on the market today :)
> >
> >Which is logical since TCQ only makes sense in devices that
> >are not slow like molasses by design ;-)
> 
> This is far from the truth.  Tagged queuing reduces the number and
> distance of seeks; a very winning proposition on a CDROM drive.

Hm. IMHO CDROMs are speedwise only suitable to install software from
(compared to about anything in magnetic disks that is). Beating them
with random I/O is not my idea of fun in any case.

Wilko
_     ____________________________________________________________________
 |   / o / /  _  Bulte  email: wilko@yedi.iaf.nl - Arnhem, The Netherlands
 |/|/ / / /( (_) 	Do, or do not. There is no 'try' - Yoda
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