an easy and consistent way of installing software ported to FreeBSD
What is Iperf?
While tools to measure network performance, such as ttcp,
exist, most are very old and have confusing options. Iperf
was developed as a modern alternative for measuring TCP
and UDP bandwidth performance.
Iperf is a tool to measure maximum TCP bandwidth, allowing
the tuning of various parameters and UDP characteristics.
Iperf reports bandwidth, delay jitter, datagram loss.
WWW: http://iperf.sourceforge.net/