"Joshua Coombs" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
My nanobsd testbed has decided to drive me up a wall. When I set it
loose, it starts hunting for a pll adjustment value, swinging wider
and wider with each period. When I last restarted ntpd to try a
conf change, it was varying the pll freq by 40ppm over the course of
one of it's sweeps.
Plotting the adjustment value over time generates a lovely sine wave
with a static period but an exponentially growing amplitude centered
on -25ppm.
An interesting extra data point, the period seems to be approx 6.8
hours for it to sweep the pll freq from a high, to a new low, back up
to a new high. That works out to being 12 poll intervals nearly
exactly using my 2048 poll period?
Joshua Coombs
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