I made a new more detailed latency/throughput test with ifq.maxlen set to 2500. With AMD64 UP kernel we are now looking at around 500kpps without packet loss. From 400 to 500kpps with one command, pretty nice, I have to remember that one. http://www.layer17.net/openbsd-test-rfc2544-throughput-latency.html (bottom of the page).
Next up is the i386 kernel. /Tony