From: Bernd Schubert <bernd-schubert@web.de>
Subject: Re: Root Over NFS Memory Problem
Date: Wed, 3 Mar 2004 22:13:24 +0100
Sender: nfs-admin@lists.sourceforge.net
Message-ID: <200403032213.24892.bernd-schubert@web.de>
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On Wednesday 03 March 2004 18:58, Nick Couchman wrote:
> I'm trying to run a few clients using NFS for the root filesystem.  I'm
> having a problem with what appears to be a memory "leak" (I'm not sure
> it's actually a leak, but for all intents and purposes, it is).  What
> happens is that I lose 8k of free memory every time I run a command.
> For example, if I repeatedly run the "free" command, the free memory
> will drop 8k each time I run it.  If I instead run "free -s 1" (telling
> free to update at 1 second intervals), it drops a couple of times and
> then levels out.  The problem is bad enough that one of the clients ran
> out of memory (swap - on a local hard drive - and physical RAM) the
> other night and "kernel panicked".  The clients are running kernel
> version 2.4.22 with the OpenMosix patch (2.4.22 seems to be the latest
> "stable" OpenMosix version).  Has anyone run across this problem
> before?  Any ideas what I can do to fix it?  Is it a known NFS bug in
> 2.4.22 that is fixed in later versions?  (I'm about to try another
> version of the kernel which might give me an answer to that, but I
> thought I'd ask).
>

We are running currently 43 system over a nfs root filesystem and none of 
those systems is suffering from such memory leak. So I really don't think 
this is a vanilla kernel issue. If you are sure that its the kernel, try 
without OpenMosix and other patches.

Cheers,
	Bernd


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