Intro

iperf3 can be used to measure maximum network throughput. It allows to calibrate several parameters like timing, buffers, protocols and streams that can help in network optimization. Each test shows various network performance metrics including throughput, jitter and packet loss. iperf3 results are considered much more accurate and reliable.

Last official binary release version was 3.1.3 for Windows in 2016 . This repo is created for iperf3 pre-compiled binaries for Windows. The goal is to create iperf3 Windows executable without any modification in original source code. Each binary released is checked with VirusTotal before upload.

Builds

iperf Ver	Cygwin Ver	OS	OpenSSL Ver
3.22	3.6.10-1.x86_64	Win11 64-bit	3.5.8
3.21	3.6.7-1.x86_64	Win11 64-bit	3.0.19
3.20	3.6.5-1.x86_64	Win11 64-bit	3.0.18

Benchmark

• Many folks use iperf to evaluate internet speed. Public servers are available under links section.
• Each binary goes through below tests before release:
   •  Download | Upload | Client mode | Server mode | Parallel streams

Release

• Variations of available release files summarized below:

  Release File	OpenSSL	Extra Feature	Info
  iperf-<ver>-win64.zip	No		Recommended
  iperf-<ver>-win64-static-auth.zip	Yes	authentication
  iperf-<ver>-win64-dynamic-auth.zip	Yes	authentication
  iperf-<ver>-win7-64Bit.zip	No		For Win7

NOTE:
Optional features in iperf3 are OS specific. Some features utilize functions and modules that are available under certain kernels. iperf -v lists available features.

Links

• Reference
  Updates about iperf3 Windows binary release are available in a discussion thread at Neowin maintained by budman. It is mentioned in official docs at Obtaining iperf3.

• Public Servers:
  • https://github.com/R0GGER/public-iperf3-servers - Recommended
  • https://as62240.net/speedtest
  • Few US Servers:

  Server Name	Location	Ports
  nyc.speedtest.clouvider.net	NY	5200-5209
  speedgauge2.optonline.net	NY	5201
  charlotte02.speedtest.windstream.net	NC	5201
  iperf3.velocityonline.net	FL	5201-5210
  la.speedtest.clouvider.net	LA	5200-5209
  iperf.scottlinux.com	CA	5201

• Manual:
  • https://software.es.net/iperf/invoking.html#iperf3-manual-page

• Source Code:
  • https://github.com/esnet/iperf

Speed Test

Test	Cmd
TCP Download	iperf3.exe -c <server> -P 10 -4 -R
TCP Upload	iperf3.exe -c <server> -P 10 -4
UDP Download	iperf3.exe -c <server> -u -P 10 -4 -R
UDP Upload	iperf3.exe -c <server> -u -P 10 -4

Disclaimer

esnet/iperf source code copyright and disclaimer applies to this binary distribution. Check License for further details.