[time-nuts] Synchronization
David J Taylor
david-taylor at blueyonder.co.uk
Thu Dec 5 17:22:41 UTC 2019
From: Bob kb8tq
Hi
One timing issue could be that USB is not that great for timing. Since it is
packet based it introduces jitter in the link. Running NTP on a
“traditional”
RPi is unlikely to produce numbers below a milisecond.
Indeed I’m digging into that for what I’m working on …..
Bob
====================================
For those interested, some time ago I made some measurements:
https://www.satsignal.eu/ntp/BBB-vs-RPi.html
I'd like to test with the Raspberry Pi 4B which avoids USB in its gigabit
Ethernet port path.
Cheers,
David
--
SatSignal Software - Quality software for you
Web: http://www.satsignal.eu
Email: david-taylor at blueyonder.co.uk
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