Unruh <unruh-s...@physics.ubc.ca> wrote: > But a snapshot taken before the system has settled down to its long term > behaviour is especially useless. The way ntp works is that intially it > takes a while to settle down to its long term behaviour. With PPS control > it usually settles down to usec offset but it takes of order of 10 hours to > do so. Thus snapshots taken long before that are especially useless. If > after 10 hours the system still has msec offsets from a PPS then there is > something seriously wrong.
He is not using a PPS in the sense that you are talking about. He uses the PPS support in gpsd which is written in user space and will settle to around 10us on a fast system that is not overloaded. On a slow embedded board it may be different, I have no experience with running gpsd on those. _______________________________________________ questions mailing list questions@lists.ntp.org https://lists.ntp.org/mailman/listinfo/questions
