Windows iperf3
Here is how to download and run iper3 on Windows and how to test single and multi-thread upload and download speeds.
The version of iperf3 we have here is 3.13 from June 2023 - and is newer than the version that is hosted on the official iperf.fr website and so has a lot of bug fixes.
1)
Download File:Iperf-3.13-windows-x64.zip and save it to your computer, eg in your Downloads folder.
2)
Right click on it, and select Extract all.
3)
Open up the Command Prompt - Click Start then type cmd and click on it.
4)
In the black box type: cd Downloads\iperf-3.13-windows-x64
5)
Run an speed test by typing: iperf3.exe -c speedtest.aa.net.uk (you may need to click 'allow access' if a Windows Defender window pops up
By default, this will run a single-thread upload speedtest (sending traffic TO the speed test server).
Variations
There are variations you can do to test the speed as follows:
- Run a single-thread Download test:
iperf3.exe -R -P1 -c speedtest.aa.net.uk - Run a single-thread Upload test:
iperf3.exe -P1 -c speedtest.aa.net.uk - Run a 10-thread Download test:
iperf3.exe -R -P10 -c speedtest.aa.net.uk - Run a 10-thread Upload test:
iperf3.exe -P10 -c speedtest.aa.net.uk