Subject: Re: 1.3 net errors - sn0:receive buffers exhausted
To: Andrew Diller <dillera@dolphin.upenn.edu>
From: Colin Wood <cwood@ichips.intel.com>
List: port-mac68k
Date: 01/26/1998 09:31:13
Andrew Diller wrote:
> 
> I just switched my BSD 1.3alpha 'enviroment' (its an external HD) from the
> Mac SE/30 where its been happy for the past few months to a Centis 650.
> 
> Now I am getting some ethernet overflows that I never had with the SE/30 and
> an asante card.
> 
> sn0: receive buffers exhausted
> 
> MacBSD is using the built-in ethernet on the Centris, of course.
> 
> Also, this pops up occasionally:
> 
> sn0: receive FIFO overrun
> 
> -any ideas as to how to make whatever network buffer larger?

Are you on a very busy ethernet?  That's usually the cause of these types
of errors, I believe.  Anyway, I believe that these buffers are actually
in hardware on the card, and if they are filling up, it basically should
mean that NetBSD isn't servicing the card often enough (i.e. it is
spending too much time at some higher interrupt level).  Are you doing a
lot of hard disk activity?

Allen would probably know more about this one, tho.

Later.

-- 
Colin Wood                                 cwood@ichips.intel.com
Component Design Engineer - MD6                 Intel Corporation
-----------------------------------------------------------------
I speak only on my own behalf, not for my employer.