>> 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.