William Unruh <un...@invalid.ca> wrote: >> In the specific case of PPS I don't see any advantage. > > Well, no. Lichvar did some tests with PPS and found that chrony > disciplined the clock much better than did ntpd (factors of over 10). I > think that is a difference.
I am seeing the same thing on our PPS synchronized servers. When the temperature changes, the swing observed in time offset is about a factor of 10 less with chrony than with ntpd. With ntpd the excursions are up to about 3us, with chrony up to about 300ns. With chrony there is just a random offset sometimes, with ntpd the derivative of the temperature can clearly be seen in the offset plots. And I have not yet configured the temperature compensation in chrony. (first have to figure out how to calibrate it) _______________________________________________ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
