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Date:      Wed, 14 Oct 1998 17:12:49 -0500 (CDT)
From:      Scott Mace <smace@intt.ORG>
To:        ken@FreeBSD.ORG (Kenneth Merry)
Cc:        cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG
Subject:   Re: cvs commit: src/sys/cam cam_xpt.c
Message-ID:  <199810142212.RAA21293@metal.intt.org>
In-Reply-To: <199810142117.OAA21730@freefall.freebsd.org> from Kenneth Merry at "Oct 14, 1998  2:17:40 pm"

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> ken         1998/10/14 14:17:40 PDT
> 
>   Modified files:
>     sys/cam              cam_xpt.c 
>   Log:
>   Disable tagged queueing for the Seagate Elite 9GB drives.  They tend to get
>   hung up when you send tags to them too quickly.  (CAM is able to recover
>   from the problem, but this just avoids it altogether.)
>   
>   Reviewed by:	gibbs
>   Reported by:	Bret Ford <bford@uop.cs.uop.edu>
>   	and:	Martin Renters <martin@tdc.on.ca>
>   
>   Revision  Changes    Path
>   1.21      +10 -1     src/sys/cam/cam_xpt.c
> 

This is odd, I have 2 elite 9's and they run fine 
with tagged queuing.  What rev are the drives that fail?
What are the symptoms exactly (maybe they don't run fine ?@?)

In fact without tagged quueing they have very slow performance.

	Scott

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