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From: Don Bowman <don@sandvine.com>
To: 'DrumFire' <dpphln@tin.it>, net@freebsd.org
Date: Sat, 13 Dec 2003 10:50:33 -0500
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Subject: RE: how to saturate 100Mbit
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From: DrumFire [mailto:dpphln@tin.it]
> 
> >> dd if=holey-file of=/dev/null bs=10m
> > 
> > I've got about 30% of CPU load for the server (P-133) and less than
> > 35mbit/s on wire.
> 
> Also you can try to dump traffic with tcpdump and send it with
> 
> /usr/ports/net/tcpreplay
> 
> I'm trying to send 100Mbit/s for 5-6 minutes with Ethernet 
> frame size at
> 64 bytes, but I need very good hardware to make this.

There is a netgraph module called ng_source which can do this.
It can achieve about 400Kpps or >1Gbps on a xeon system with
a gigabit card, should be able to saturate a fxp.