Noob wrote: > Hello, > > I've been running ntpd 4.2.4 to synchronize my system clock using remote > stratum 2 servers as a reference. (The RTT to these servers is in the > 30-50 ms range.) The accuracy is in the 1-2 ms range, based on the > reported offset. > > I've been asked to evaluate the following time server, in order to reach > a better accuracy than what the current setup provides. > > http://www.heoldesign.com/index.php?id=58 >
That link takes me to a page advertising THREE products! Which one did you have in mind? > (AFAIU, this time server implements SNTP, not the full NTP.) > > The idea would be to put this (stratum 1) time server in the same LAN as > my box, and add it my ntp.conf. (The RTT on the LAN is on the order of > 100 µs.) > > Will it work? > It should work. > Is it a problem that the time server only implements SNTP? > It should not be a problem. The largest difference between NTP and SNTP is the effort to account for the vagaries of the internet! > What kind of accuracy may I expect? > These devices should be accurate to within the range of 25 to 100 nanoseconds. The limiting factor will be the jitter introduced while getting the time into your computer. A SWAG (Scientific Wild Ass Guess) would be 500 microseconds. By spending a lot of time and effort you might be able to get something better than that. The chief difficulty would be measuring and controlling the delays within the computer. _______________________________________________ questions mailing list questions@lists.ntp.org https://lists.ntp.org/mailman/listinfo/questions
