On Fri, May 26, 2017 at 12:11:30PM +0000, Matthew Huff wrote: > Thanks. I agree that the appliance doesn’t appear to exist. It’s a shame that > it doesn’t, I think it would be a good idea. > > The 50 msec isn’t that hard to reach on an average basis, but we routinely > see drifts away from that on occasions. The minpoll idea would probably fix > this, but was hesitant to poll that frequently. I just found NIST’s NTP page > and they specify to not poll more frequently that every 4 seconds (minpoll > 2). I wouldn’t have thought that they would want polling with minpoll 3, but > it appears I was wrong. This may fix the issue by itself.
Using such a short polling interval over Internet would be a horrible idea. NIST servers are overloaded and located in a network that has problems with asymmetric routing. It's better to avoid them if accuracy is a requirement. I thought you were using those stratum-1 servers you have and the requirement for accuracy was 10 or 100 microseconds, not milliseconds. Anything should do better than 50 milliseconds as long as it's on local network. -- Miroslav Lichvar _______________________________________________ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
