I searched 'frequency' in RFC 1305 but I did not find such avariable.I manage 7 ntp servers and this variable may vary from -255.7 to18.57on them.Frequency is actually the clock frequency error, measured in PPM (parts per million). Usually not more than a few tens of PPM.
Oh, I see.
Another undefined variable is noise. Nor the manual neither the RFC does mention it. (It's value is in the 37-200 range and quiteunstable.) Maybe you mean jitter or stability? I don't see anything called noise from readvars in ntpq, if you could cut and paste showing where the phrase occurs I think
$ ntpq -c rl localhost assID=0 status=0644 leap_none, sync_ntp, 4 events, event_peer/strat_chg, version="ntpd [EMAIL PROTECTED]:4.2.0a+stable-2-r Fri Aug 26 10:30:12 UTC 2005 (1)"?, processor="i686", system="Linux/2.6.17", leap=00, stratum=2, precision=-20, rootdelay=0.508, rootdispersion=28.292, peer=9428, refid=54.70.78.155, reftime=c903ecee.571ae2da Tue, Nov 14 2006 8:21:18.340, poll=9, clock=0xc903ef95.b221ea35, state=4, offset=-0.026, frequency=-255.776, noise=0.348, jitter=0.340, stability=3.180 ^^^^^^^^^^^
we could help you. 37 to 200 ms might be typical jitters for a congested network connection. I think different versions of ntpq use different units for jitter, some using ms and some using seconds.
My jitter above is definitely in ms comparing to to the output of "ntpdc -c sysinfo localhost": ... precision: -20 root distance: 0.00050 s root dispersion: 0.03027 s ... jitter: 0.000381 s stability: 3.180 ppm broadcastdelay: 0.003998 s authdelay: 0.000001 s I've attached a graph of noise. (The measurement unit is just guessed.) Gabor
noise.png
Description: Binary data
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