I finally have my stratum 2 servers working as good as I think they
can given their environments. Now I'm working on my stratum 1 clock
which pulls it's time via ACTS.
I'm currently dialing NIST so I can take advantage of the automatic
latency compensation. Problem is, the time I get back seems to vary
by up to 20ms. I may get 3 or 4 calls where the reported time stays
within a couple ms of what I believe true time to be, and then a call
will come back close to 20ms off. When ntpd has decided to stretch
out to it's max call interval, that glitch induces drift in the clock,
resulting in an eventual 40ms offset before it corrects.
I've tried the following:
- switched to manual latency adjustment using time1
- only configured 1 number to avoid different latencies for different
paths
- dialing USNO instead of NIST
I can't seem to shake the random wild offsets.
I'm running the 4.2.1RC on FreeBSD 4.11, soekris 4501, and a Microcom
28.8 external modem.
I'm open to any suggestions on how to improve things.
Joshua Coombs
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