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Date:      Sun, 2 Jul 2000 16:25:14 -0400 (EDT)
From:      David Gilbert <dgilbert@velocet.ca>
To:        freebsd-stable@freebsd.org
Subject:   Dump takes ages on SCSI.  (several times faster on IDE)
Message-ID:  <14687.42282.873585.2561@trooper.velocet.net>

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I have a PIII/450 with a venerable Adaptec 2940UW and a Quantum 9G
SCSI disk.

Recenly, I was generating many crash dumps and was using a serial
console (so I was watching them).  I came to a point in my debugging
where I needed another PCI slot, so I removed the 2940 and loaded an
IDE drive with the same build of FreeBSD.

I then noticed that the IDE would crashdump somewhere around 10 times
faster than the SCSI disk.

Why?  Can the SCSI speed be improved?

Dave.

-- 
============================================================================
|David Gilbert, Velocet Communications.       | Two things can only be     |
|Mail:       dgilbert@velocet.net             |  equal if and only if they |
|http://www.velocet.net/~dgilbert             |   are precisely opposite.  |
=========================================================GLO================


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