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Date: Fri, 7 Jul 1995 12:28:00 -0400
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To: freebsd-hackers@freebsd.org
From: dennis@et.htp.com (dennis)
Subject: Re: ed1: warning - receiver ring buffer overrun
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>>   It's caused by the receive buffer in the ethernet card overflowing. Is it
>>a 16bit card? If not, you should change it. If it is, then I'd just ignore it;
>>it's not a very important error.
>
>Its a 16bit SMC, so basically what is happening is the small on-card buffer is
>pitching packets, which will be resent.  The card is in a crappy 486/66 so I
>wouldnt be suprised if it wasnt servicing the card as often as it should.
>
>-Crh
>
>    Charles Henrich     Michigan State University     henrich@crh.cl.msu.edu
>
>                     http://rs560.msu.edu/~henrich/
>

Just as a matter of interest, do you have any bus mastering cards in the
box? what other cards do you have? I assume that you have 2 ethernet cards
in the box. You may have something that is disabling interrupt processing or
stealing the bus for too long. 

dennis