Dave wrote: > I'm experiencing large values of dispersion when I use 'ntpq -p': > > 3:22pm:ntp>ntpq -p > remote refid st t when poll reach delay > offset disp > ============================================================================== > *10.2.100.10 .GPS. 1 u 25 64 377 0.46 > 943.557 439.36 > 3:22pm:ntp> > > > but when I look at the peerstats log file, my dispersion is low: > > 3:22pm:ntp>tail /var/ntp/ntpstats/peerstats.log > 54243 54804.018 10.2.100.10 9634 0.617563 0.00046 0.31154 > 54243 54868.013 10.2.100.10 9634 0.813226 0.00043 0.32210 > 54243 54932.018 10.2.100.10 9634 0.099169 0.00046 0.55225 > 54243 54996.010 10.2.100.10 9634 0.300057 0.00047 0.28690 > 54243 55060.014 10.2.100.10 9634 0.584358 0.00044 0.31111 > 54243 55124.009 10.2.100.10 9634 0.781632 0.00047 0.32353 > 54243 55188.014 10.2.100.10 9634 0.065932 0.00043 0.55287 > 54243 55252.013 10.2.100.10 9634 0.657674 0.00044 0.37859 > 54243 55316.018 10.2.100.10 9634 0.943557 0.00046 0.43936 > 54243 55380.013 10.2.100.10 9634 0.139388 0.00044 0.59772 > 3:23pm:ntp> > > > I'm also concerned with the large amount of maximum/estimated error > when I use the xntpdc command 'kerninfo': > > xntpdc> kerninfo > pll offset: 0 us > pll frequency: -391.137 ppm > maximum error: 524704 us > estimated error: 408368 us > status: 0089 > pll time constant: 2 > precision: 1 us > frequency tolerance: 512 ppm > pps frequency: 0.000 ppm > pps stability: 512.000 ppm > pps jitter: 200 us > calibration interval: 4 s > calibration cycles: 0 > jitter exceeded: 0 > stability exceeded: 0 > calibration errors: 0 > xntpdc> > > Here is the output of the pstats command: > > xntpdc> pstats 10.2.100.10 > remote host: 10.2.100.10 > local interface: 10.2.100.5 > time last received: 3s > time until next send: 61s > reachability change: 2947s > packets sent: 59 > packets received: 59 > bad authentication: 0 > bogus origin: 0 > duplicate: 0 > bad dispersion: 15 > bad reference time: 0 > candidate order: 1 > xntpdc> > > And lastly, my ntp.conf file: > > 3:25pm:inet>more ntp.conf > server 10.2.100.10 # NTP server > > driftfile /etc/ntp.drift # Drift available for next restart > logfile /var/ntp/ntp.log # NTP logging > > statsdir /var/ntp/ntpstats/ > statistics loopstats peerstats clockstats > filegen loopstats file loopstats.log type day link enable > filegen peerstats file peerstats.log type day link enable > filegen clockstats file clockstats.log type day link enable > 3:25pm:inet> > > > > Anyone have any ideas? I have a GPS signal coming in to a Brandywine > NTA-100, which is configured at 10.2.100.10. Thanks in advance! >
If you are using "X"ntpdc you would appear to be using a version that may be as much as ten years old! Just what are you using and what are you running it on? _______________________________________________ questions mailing list [email protected] https://lists.ntp.isc.org/mailman/listinfo/questions
