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, datagram loss.
- Install iperf on Windows – just download, unzip and run iperf.exe.
- Install iperf on Ubuntu:
sudo apt-get install iperf
From another system launch iperf in client mode with iperf -c <server IP>. By default Iperf will run a 10 second test and report amount of data transferred and bandwidth speed.
Note: Iperf can be used to test LAN speeds as well as over the Internet.