Three Reasons Why You Should Not Use iPerf3 on Windows

Hi Bruce,

Thanks for your informative post. I'm skeptical that posix emulation is the bottleneck for these capacity tests. One can run iperf3 -c localhost and iperf3 -s to check. CPUs tend to run sub nanosecond and from internal cache so this should be fine and off board network i/o is going to be many orders of magnitude slower.

I also don't see a technical reason to go to MSFT tools here. We've been using iperf 2 on Windows systems over a decade now for our Wi-Fi related testing. So have our industry partners. We see no issue, at least with iperf2, from a capacity test perspective. 

I do agree the MSFT could help better support industry standard tools. The gist of this blog post is not to use industry standard tools. I'd be skeptical as a customer or user to follow this suggestion.