Bill, Not quite. There must always be a selection in every run of eight samples, so there can be no more than seven unselected samples in a row. To gain more insight, run ntpd with -d to produce a trace. Note in the clock_filter trace the age value, which is the interval from the last selected minimum sample to the current time.
In passing, the clock_filter statistics in that trace refer to the minimum sample, not the current sample. That should probably be changed. Dave Bill Unruh wrote: > David Woolley <[EMAIL PROTECTED]> writes: > > >>Unruh wrote: >> >>>Under ... is the line >>>dst[i]=peer->filter_delay[j] >>> > > >>Apologies, I missed that detail. I guess dst has changed its meaning >>over time. (It doesn't really look right to me though, as there is a >>sudden discontinuity as you cross the Allan Intercept.) > > >>However, that doesn't change the fact that the sample used is ord[0], >>i.e. the sample with the lowest dst value, subject to it also being >>newer than the last one used. That is not necessarily the most recent. > > > > It looks like you are right that it does not only select it if it is the > latest. Comparing the peerstats output ( augmented by the most recent > p_offset and p_del) and the loopstats, there is a loop output whenever the > min changes, not only if it is the latest as well. I must have misread the > code. Sorry. But that still can result in 8 measurements without any being > used. > _______________________________________________ questions mailing list questions@lists.ntp.org https://lists.ntp.org/mailman/listinfo/questions
