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To: Martin Josefsson <gandalf@wlug.westbo.se>
Cc: Greg Stark <gsstark@mit.edu>, linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: 2.4.20-ac2 Memory Leak?
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From: Greg Stark <gsstark@mit.edu>
Organization: The Emacs Conspiracy; member since 1992
Date: 18 Mar 2003 19:05:11 -0500
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Martin Josefsson <gandalf@wlug.westbo.se> writes:

> On Wed, 2003-03-19 at 00:46, Greg Stark wrote:
> > Martin Josefsson <gandalf@wlug.westbo.se> writes:
> > 
> > > This can be the source of your problems, connections can get very long
> > > timeouts and stay in ip_conntrack.
> > 
> > Is there a way to list the connections and confirm this is the problem?
> > It seems it would require an awful lot of connections to consume megabytes of
> > memory.
> 
> cat /proc/net/ip_conntrack
> 
> The third field is the timeout in seconds.
> The fourth field is the state of the connection, if it's TIME_WAIT with
> a large timeout then it's the list handling bug. (iirc it was TIME_WAIT
> that showed the problem...)

Nope, a total of 16 entries in ip_conntrack, one of which is in TIME_WAIT with
a timeout of 2m.



> The default tcp timeout is 5 days for esatblished connections.
> 
> There's a patch in patch-o-matic that enables you to tune the timeouts
> without having to edit the source. Instructions on how to get
> patch-o-matic are availiable on http://www.netfilter.org

Thanks.

-- 
greg

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