David Woolley wrote: > Nicola Berndt wrote: > >> >> What really bothers me is that ntp is totally capable of telling me its >> offset (and so how wrong the time /being served/ is) but not capable of > > Careful. The theory behind ntpd is that, in normal operation, offset > consists only of measurement error, not of real clock error. The > problem with ntpd is that, after startup, or rapid temperature changes, > that assumption isn't valid, and offset contains a large component of > real error. Worse, it is obvious to a human observer, even without > hindsight, that that is the case.
Some time ago I have made some tests comparing the system time disciplined by NTP against the time of a built-in GPS PCI card. The results showed the offset reported by ntpd did very well match the offset measured against the GPS card. I think the current development of NTP goes into a direction which may cover some special scenarions well, but matches less and less the requirements of "normal" users. Martin -- Martin Burnicki Meinberg Funkuhren Bad Pyrmont Germany _______________________________________________ questions mailing list questions@lists.ntp.org https://lists.ntp.org/mailman/listinfo/questions
