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Date:      Fri, 3 Apr 1998 17:14:38 -0500
From:      "Larry S. Marso" <larry@marso.com>
To:        "Bryan K. Ogawa" <bkogawa@primenet.com>, freebsd-scsi@FreeBSD.ORG
Subject:   Re: Will a termination problem cause total hangs?
Message-ID:  <19980403171438.18492@marso.com>
In-Reply-To: <Pine.BSI.3.94.980403123048.3921B-100000@foo.primenet.com>; from Bryan K. Ogawa on Fri, Apr 03, 1998 at 12:37:46PM -0800
References:  <3.0.32.19980403113026.007430fc@cyclone.degnet.baynet.de> <Pine.BSI.3.94.980403123048.3921B-100000@foo.primenet.com>

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I wrote this morning about a scanner on scsi bus 0, /dev/pt0, causing
a "total system lockup".  You are correct, the one thing that still
seems to happen is that the kernel returns pings.

Best regards
-- 
Larry S. Marso
larry@marso.com



On Fri, Apr 03, 1998 at 12:37:46PM -0800, Bryan K. Ogawa wrote:
> 
> Can a termination problem cause total kernel hangs?
> 
> Right now, at least two of us on -questions are experiencing problems with
> total lockups (no pings) when in X, usually when using Netscape (in my
> case) or in heavy concurrent disk accesses (in Malte's case) on SCSI
> systems with a number of SCSI devices. (4 to 7). 
> 
> Malte has had success in reducing the hangs by changing the termination,
> and I'm wondering if the sorts of hangs we're looking at could be caused
> by termination problems.
> 
> Both of us have Adaptec 2940UWs.
> 
> Any ideas or suggestions?  I had thought that a SCSI hung kernel would at
> least return pings?
> 
> bryan k ogawa  <bkogawa@primenet.com>   http://www.primenet.com/~bkogawa/
> 
> 
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