David J Taylor via time-nuts writes:
The graph in ntpviz shows the jitter and temp almost perfectly correlated.
Based on my experience it should really be a correlation of temperature
rate of change vs. jitter. On my self-ovenized servers I see on average
around 200ns jitter (close to the theoretical limit of 157ns based on
the 19.2MHz clock) with the occasional peak to about three times the
baseline.
Regards,
Achim.
====================================
Achim,
I didn't write the part you quoted - blame my non-standard emailer!
What I see on the RPi is a change of offset against rate of change of
temperature - non-ovened. It's just as I expect.
Cheers,
David
--
SatSignal Software - Quality software for you
Web: http://www.satsignal.eu
Email: [email protected]
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