On Jun 6, 10:45 pm, David Woolley <da...@ex.djwhome.demon.invalid> wrote: > skillz...@gmail.com wrote: > > > 2. Separate offset sync from rate sync. What I wasn't sure about is > > why the rate sync would be so much more stable than offset sync since > > they seem to both come from the same packet exchanges. Is the > > advantage that the rate sync is smoothed over time whereas the offset > > sync isn't? > > I seem to remember that NTPV3 had a fast loop for phase and a slower > loop for frequency.
Do you mean NTP using a PLL for poll intervals below the Allan intercept (~2000 seconds) and an FLL for poll intervals above it? I'm aware of that aspect of it, but if I understand it correctly, that was still used for both offset and rate synchronization. _______________________________________________ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
