21 March 2013 - full Windows port (no Cygwin) of iperf-2.0.5, with properly working QoS (DSCP set). Tested at gigabit speeds with mulsticast and IPv6. IPERF is a professional tool for qualifying throughput of corporate networks and the Internet. However, it's still simple and easy to use.
See the videos below for quick demos. Or, check the tutorial page.
Questions? Ask us!
"The program is working very well.
I'm testing a DOCSIS 3.0 cable modem in an 8x4 channel bonded mode.
I'm able to get ~300Mbps downstream and ~100Mbps upstream without errors."
Cisco Systems Inc
"IPERF helped us identify network performance problems by allowing us to test connections between the Windows and Linux servers in our environment."
The following videos demo advanced features, as well as basic usage under Windows. Tests were run on separate machines with gigabit cards, using Remote Desktop to capture both screens at once.
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Bandwidth Test with QoS
Bandwidth test between two computers, with QoS parameter set. Gigabit cards are connected with a crossover cable. DSCP values are assigned separately for client and server traffic.
Three computers connected to Netgear GS608 gigabit switch. Two terminal sessions on the right on Windows XP and Windows7 run IPERF as receivers, leftmost is Windows XP Sony Vaio laptop running IPERF as sender.
Two desktops connected via Netgear gigabit switch, with global IPv6 addresses assigned.