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Date:      Wed, 13 May 2009 10:15:33 -0400 (EDT)
From:      Andy Dills <andy@xecu.net>
To:        Tijl Coosemans <tijl@ulyssis.org>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: Extreme filesystem performance decrese going from FreeBSD4 to FreeBSD7
Message-ID:  <20090513101509.Y64283@shell.xecu.net>
In-Reply-To: <200905131605.04534.tijl@ulyssis.org>
References:  <20090512135226.N64283@shell.xecu.net> <200905131605.04534.tijl@ulyssis.org>

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On Wed, 13 May 2009, Tijl Coosemans wrote:

> I believe there was a performance regression in 7.1 for SCSI disks. I
> don't know if the amr driver was affected but the issues should be
> resolved in FreeBSD 7.2 so you might want to give that a try.

http://www.nabble.com/HEADS-UP:-Major-CAM-performance-regression-td21994181.html

Indeed, that appears to be the source of the issue.

Thanks very much.

Andy

---
Andy Dills
Xecunet, Inc.
www.xecu.net
301-682-9972
---



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