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From: "John S. Dyson" <toor@dyson.iquest.net>
Message-Id: <199704160103.UAA01158@dyson.iquest.net>
Subject: Re: Doing the FreeBSD tightrope walk.
In-Reply-To: <Pine.NEB.3.95.970415155218.23227I-100000@mail.cdsnet.net> from Jaye Mathisen at "Apr 15, 97 03:54:36 pm"
To: mrcpu@cdsnet.net (Jaye Mathisen)
Date: Tue, 15 Apr 1997 20:03:11 -0500 (EST)
Cc: hackers@FreeBSD.ORG
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> 
> 
> Just about enough to make me switch sometimes...
> 
> P6-200, 128MB RAM.  -RELENG_2_2 supped from 4/13.
> 
> I'm getting a panic when doing a bunch of rm's via NFS.
> 
> So I build a kernel with -g, and now reboot, and now I panic with:
> 
> panic:  bounce memory out of range.
> 
> WTF is this?
> 
> All that's in this box is 2 7880's, and 2 dnet0 DEC DE500-AA's.
> 
> 
> Any tips appreciated.
> 
Turn off bounce buffer support.  There are some problems with
allocating too much bounce memory.  If you need bounce buffers,
inside of the bounce buffers calculation (#ifdef BOUNCE_BUFFERS)
where the number of bounce buffers are calculated in /sys/i386/i386/machdep.c,
limit the number of bouncepages to 128 instead of it's excessive value.

Good luck, and give me some feedback!!!

John