David J Taylor via time-nuts writes: > I did some very simple tests to see how the RPi 4B with its better > Ethernet connection compared with the earlier model B (rather old!). > My test configuration isn't good, as there are a couple of switches > between the two RPi cards and the monitoring PC: > > https://www.satsignal.eu/ntp/BBB-vs-RPi.html#update > > but the summary is: the model B reports 0.464 ms mean delay, and the > model 4B reports 0.254 ms, so 0.21 ms better.
FWIW, that's roughly the same latency I see for a TinkerBoard running the ethernet interface at 100MBit/s and the buffering window reduced to 0.67µs. The latency would be somewhat lower with the interface run at 1GBit/s, slightly below 200µs IIRC. Regards, Achim. -- +<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+ Wavetables for the Waldorf Blofeld: http://Synth.Stromeko.net/Downloads.html#BlofeldUserWavetables _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
