Udo van den Heuvel wrote: > Hello, > > I got one of them emails even though the machine is running OK; > I did not change anything about ntp, the box has been up for 71 days and > yet the graph at pool.ntp.org shows an offset going downhill. > Also the network config has not been changed. There is slight traffic > shaping, as has been there for ages on my side of the connection, just > to prevent issues like these. > > What is the most likely cause? > In my experience (at least for my own system) the offset graph is showing the network latency towards the monitoring server, rather than the quality of my clock. I see no irregularities over the past days, but in the past the offset sometimes was quite high.
I keep a couple of external reference clocks in addition to my two local clocks (GPS and DCF), so I can monitor my own ntp's view on the offset and compare it to what the monitoring server thinks. When your own "ntpq -p" does not show an offset and there is one at www.pool.ntp.org, it must be somewhere in the network. Rob _______________________________________________ timekeepers mailing list [email protected] https://fortytwo.ch/mailman/cgi-bin/listinfo/timekeepers
