Iperf

iperf was developed by NLANR/DAST as a modern alternative for measuring maximum TCP and UDP bandwidth performance. Iperf allows the tuning of various parameters and UDP characteristics. Iperf reports bandwidth, delay jitter, and datagram loss.

iperf version 2 (in this repository) is no longer maintained by its original developers. Current ESnet development efforts are focused on version 3 of iperf (otherwise known as iperf3), which is available at:

https://github.com/esnet/iperf
http://software.es.net/iperf

Meanwhile, a third party has taken up development and maintenance of iperf2. As of this update (November 2017), this work can be found in the following repository:

https://sourceforge.net/projects/iperf2/