I said:
> I also wonder whether it might be productive to consider closing
> the NTP "servo loop" in velocity (frequency) in this case, rather
> than position (phase).
Before somebody else calls me on it, I should point out that NTP
actually uses both:
"The clock discipline algorithm functions as a nonlinear, hybrid
phase/frequency-lock (NHPFL) feedback loop."
(see
http://www.cis.udel.edu/~mills/database/brief/clock)
I'm wondering whether the clock discipline might better emphasize
only frequency in such circumstances, as opposed to merely tempering
the PLL.
Rob
Received on Mon Jan 15 2007 - 08:03:19 PST