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Date: Sun, 17 Aug 1997 19:00:01 -0700 (PDT)
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From: David Greenman <dg@root.com>
Subject: Re: kern/4328: Degenerate network performance 
Reply-To: David Greenman <dg@root.com>
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The following reply was made to PR kern/4328; it has been noted by GNATS.

From: David Greenman <dg@root.com>
To: tege@nada.kth.se
Cc: FreeBSD-gnats-submit@FreeBSD.ORG
Subject: Re: kern/4328: Degenerate network performance 
Date: Sun, 17 Aug 1997 18:56:10 -0700

 >task), the network performance degenerates to on the order of 100 KB/s with
 >random delays.  The machine has two network interfaces, one 100Base-T (fxp)
 >and one 10Base-T (de).  They degenerate similarly.
 
    There are a couple of possiblities. One is that you're running out of
 network buffers. This is unlikely on machines that are only a gateway, but
 is common on machines that are also a WWW server. There is insufficient
 information in this bug report to identify the problem exactly. If your
 /var/log/messages has anything in it about "Out of mbuf clusters", then
 this would be the problem. Another possibility is that the specific 'de'
 card you are using is one of the ones that FreeBSD isn't working very well
 with. You might try getting the newer version of the driver from Matt
 Thomas.
 
 -DG
 
 David Greenman
 Core-team/Principal Architect, The FreeBSD Project