Hi The standard NTP software does a "best of the bunch" selection when given a large number of servers. What it considers best and what you would pick likely are not the same thing. You stick at a few ms of error rather than getting say a 10X improvement with 100 servers.
Custom code, custom hardware, stable routing - you can do *much* better. Of the three, routing is normally the biggest source of error. If it's not you have a very unusual ISP / connection / server. Bob On Jul 24, 2011, at 12:50 AM, "David J Taylor" <david-tay...@blueyonder.co.uk> wrote: >> Indeed thats why I was saying choose 3 servers. >> Now I see in the thread that you can pick pools of servers so thats good. >> Then average what they say the time is and drive oscillator. >> Wonder if you could look towards the stratum 1 servers. >> But that said I could easily believe that it might ot be any better then >> wwv. >> Good thread. Things to learn as we all seek a backup to GPS I assume. >> Regards >> Paul >> WB8TSL > > Paul, be aware that three servers is not the best choice, as if one fails you > are left with two servers, and you don't know which is correct. IIRC four, > five and seven servers allow for the failure of 1, 2 or 3 of them, but do > choose more than three. > > 73, > David > GM8ARV > > _______________________________________________ > 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. _______________________________________________ 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.
