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Date:      Tue, 21 Aug 2001 14:44:06 -0400
From:      Steve Shorter <steve@nomad.lets.net>
To:        Matt Dillon <dillon@earth.backplane.com>
Cc:        freebsd-stable@FreeBSD.ORG
Subject:   Re: VM exhaustion and kernel hangs
Message-ID:  <20010821144406.A2733@nomad.lets.net>
In-Reply-To: <200108211820.f7LIKZf65278@earth.backplane.com>; from dillon@earth.backplane.com on Tue, Aug 21, 2001 at 11:20:35AM -0700
References:  <20010821115724.A2562@nomad.lets.net> <200108211820.f7LIKZf65278@earth.backplane.com>

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On Tue, Aug 21, 2001 at 11:20:35AM -0700, Matt Dillon wrote:
> 
>     Yes, we believe that problem has been fixed.  It probably isn't in 
>     the -SECURITY release.  I would recommend that you play around with the
>     latest -stable on one workstation and see if that solves your problem.

	For a few good reasons I would like to stick with 4.3-SECURITY,
and avoid upgrading to 4.4.

In order to develop a kernel patch is it good enough to look at the 
functions killproc() (in sys/kern/kern_sig.c) and code in
vm_pageout.c (in sys/vm), or will there be issues with other parts of the
kernel. Or what files should I diff?

> 
>     You might also want to try to figure out what is eating up the memory
>     (or, more specifically, dirtying memory since clean file-backed pages
>     would not lead to this situation).
> 

	Can this situation be created if a web server is serving pages
that are being modified by another process, if they are both accessing the
fs over NFS?

	thanx - steve


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