rjmcmahon

4 ms·

1. 1.▲
   by rjmcmahon 2y ago

   Also, with iperf 2, -c localhost seems to perform the same on Windows as it does for Linux. So skeptical that the cygwin overhead is very large. A binary is here https://sourceforge.net/projects/iperf2/files/
2. 2.▲
   by rjmcmahon 2y ago

   Just some clarification: IPerf 2 is different from the iperf3 found at https://github.com/esnet/iperf Each can be used to measure network performance, however, they DO NOT interoperate. They are completely independent
3. 3.▲
   by rjmcmahon 8y ago

   Well, here's just one measurement using iperf 2.0.12. All clocks are synchronized to a GPS disciplined oven controlled oscillator (OCXO). Connected via 1Gbs. FreeBSD latency is significantly better. Source fedora 28 xeon machine, re
4. 4.▲
   by rjmcmahon 8y ago

   Iperf 2.0.10+ uses clock_gettime() when a timestamps is needed. For TCP and no interval reporting the only calls needed are at the beginning and end of the test. The performance problem we hit with 2.0.5 had to do with insufficient shared