[email protected] said: > I've found the built-in measurement to be useful. I have this > configuration:
Yes, but you have to be suspicious. Consider a PPS over USB setup without any fudging. Without any other clock sources, you can't tell that the histogram is actually offset rather than centered around zero. > statistics loopstats peerstats clockstats rawstats is interesting too. If you have good clocks at both ends, you can see network asymmetries. > However, looking the data "over time" is useful to see the impact of > various events. That's also a good way to spot network congestion. ntpd uses the best of the last 8 samples where "best" means lowest round trip time on the assumption that will give the lowest distortion due to queuing delays. That filter is between rawstats and peerstats. I think the local refclocks always return a RTT of 0 and the filter returns the most recent sample when the RTTs are equal. -- These are my opinions. I hate spam. _______________________________________________ devel mailing list [email protected] http://lists.ntpsec.org/mailman/listinfo/devel
