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Date: Mon, 12 Apr 2004 17:01:50 +0200
From: Christian Weisgerber <naddy@mips.inka.de>
To: freebsd-net@FreeBSD.org
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Subject: Re: re(4): puzzling netperf result
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Ruslan Ermilov:

> > How does the machine get the idea it is pushing 200 Mbit/s down a
> > 100 Mbit/s link?
> 
> Does ``netstat -I re0 -w 1'' show the same numbers while you're
> running the UDP_STREAM test?

Yes, it does (~26000000 bytes).

I have two further GigE-equipped OpenBSD boxes on the LAN and they
top out at a plausible ~95Mbit/s when UDP streaming to the same
target.  However, netperf also reports a large number of errors
(dropped packets?) in their case--but actual netstat interface
figures again concur with the throughput.

Alas, I have no further FreeBSD boxes to test this.

-- 
Christian "naddy" Weisgerber                          naddy@mips.inka.de