Hello, I wonder what's a realistic ballpark for the jitter I can expect when feeding a GPS PPS into ntpd? [] Thanks, regards Andreas =======================================
Andreas, I have some offset plots here: https://www.satsignal.eu/mrtg/performance_ntp.php and a few experimental clock and system jitter plots here: https://www.satsignal.eu/mrtg/performance_ntp_jitter.php For an unloaded Raspberry Pi, 1-4 us, for an RPi carrying out another task perhaps as high as 5-7 us for an RPi zero. For a Windows-10 PC 4-50 us depending on load and CPU speed and age. All given a reasonably clear satellite view, and no GPS jammer truck parked outside! [us => microsecond] Cheers, David -- SatSignal Software - Quality software for you Web: https://www.satsignal.eu Email: david-tay...@blueyonder.co.uk Twitter: @gm8arv _______________________________________________ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions