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Date:      Mon, 07 Jun 1999 21:48:01 +0200
From:      sthaug@nethelp.no
To:        ken@plutotech.com
Cc:        alpha@FreeBSD.ORG
Subject:   Re: lousy ethernet performance w/21143
Message-ID:  <63479.928784881@verdi.nethelp.no>
In-Reply-To: Your message of "Mon, 7 Jun 1999 13:25:11 -0600 (MDT)"
References:  <199906071925.NAA23913@panzer.plutotech.com>

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> The machine is on a half-duplex 100BaseT network (i.e. none of the full
> duplex problems with the de driver and the 21143).
> 
> With the old kernel, from late April, I can get 7-8MB/sec throughput using
> tcpblast to a machine on the local network.  With the new kernel, from
> Saturday, I'm only getting about 6-7 Kilobytes/sec.
...
> Every outgoing packet seems to generate an error!

Sounds a lot like duplex mismatch. Have you tried playing with half/full
duplex? Back to back with another machine and a different card (ie. Intel
Pro 100/B)?

Steinar Haug, Nethelp consulting, sthaug@nethelp.no


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