From owner-freebsd-hardware  Tue Sep 16 18:49:45 1997
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To: Jan Martin Borgersen <borg@cs.unc.edu>
cc: freebsd-hardware@FreeBSD.ORG
Subject: Re: 10Mbit Ethernet Adapter Performance 
In-reply-to: Your message of "Tue, 16 Sep 1997 20:18:45 EDT."
             <199709170018.UAA19721@buzzard.cs.unc.edu> 
From: David Greenman <dg@root.com>
Reply-To: dg@root.com
Date: Tue, 16 Sep 1997 18:52:13 -0700
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>Can anyone point me to any performance evaluations
>of 10Mb ISA Ethernet adapters or their device drivers?
>
>I'm getting some really interesting numbers:
>
>On an isolated, 100Mb switched Ethernet hub with no
>other network traffic, I'm running ttcp to perform
>tcp and udp blasts between several 486-66 class 
>machines with ISA 10Mb Ethernet adapters.
>
>When machines with generic IBM cards (looks like
>a NS 83905A chip) thrown into NE2000 emulation and
>using the ed0 driver are transmitting, I'm seeing
>network throughputs on the order of 8300 bps.

   8300? You mean 8.3Kbps? If that is really the case, then you've got a
serious problem. Perhaps your switch is configured for full duplex? Or
perhaps you have a bad cable? You should be seeing > 8Mbps.

-DG

David Greenman
Core-team/Principal Architect, The FreeBSD Project