On Tue, Feb 14, 2017 at 9:38 PM, MLewis <mlewis...@rogers.com> wrote:
> That dual set model is new to me. Interesting to see its fall-back on > failures. And the offline model. > > It's the poor-man's version of that model that I was aiming for (and one, > not two sets of receiver-with-server): > - A small box as "GPS receiver" with NTP, receiving the PPS from a GPS > timing module. > - That box as a source to an NTP Server that also looks at six internet pool > sources (pools are the 'backup' if GPS/receiver-box fails). > - My systems (two boxes) look to the NTP Server for their time reference. Why set up a dedicated NTP server if you only have two computers that will use it? Your server will be accurate to a few microseconds but your two computers will only by good to a few milliseconds because ethernet is not nearly as good as PPS. You could save some money and just run NTP on the two computers. A dedicated server does not get you much because you can't get GPS level accuracy out of it to your other devices. But this is a hobby and setting it up is educational And maybe you find other uses for the server like maybe it can keep backups or store media files (videos) or host a small web site NTP is almost zero load on the CPU and the best thing is the NTP accuracy is not effected by CPU load SO you can run other service without degrading the NTP server. (All the time critical stuff happens inside a tiny interrupt handler, not in user space) -- Chris Albertson Redondo Beach, California _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.