Yesterday we had some fun at the first UK Wi-Co Community event in London. I wanted to run some throughput tests of OFDM and OFDMA and don’t have enough devices to do it myself at home, so I stepped up in front of a live studio audience for some community participation.
As often happens with live testing in front of an audience I had what the kids call an Epic Fail. The setup and testing worked fine at home with the 1 device I tried with… but what this iPerf newbie did not realise about iPerf3 is that it only allows 1 client connection per port. So 1 person got going and 9 others started shouting back to me that ‘the computer said no’.
Thankfully the amazing Jiri Brejcha was in the audience and, during a break, gave me the commands needed to set multiple iPerf instances running and logging on the WLAN Pi ready for a repeat attempt at lunch. I’m documenting this here before I forget it, for my benefit more than anyone elses. But perhaps you are onsite having made the same assumption I did and this can save your bacon. Be warned, its console commands, you can’t do this in the UI, so you’ll need SSH access to the WLAN Pi.
Continue reading “Running & logging multiple iPerf services on the WLAN Pi”