David Woolley wrote: > Danny Mayer wrote: > >> Increased polling frequency increases jitter. > > I think jitter was being used loosely here, not with the specific > sense of high frequency variations.
Yes, my original question referred to looking at a graph of offset plotted over a day (sampling at 5-minute intervals) and trying to judge the amount of short-term oscillation as opposed to the longer-term drifts (e.g. those caused by temperature variations). I was not meaning the "jitter" figures reported by NTP. I was actually thinking about my Windows Vista system: http://www.satsignal.eu/mrtg/gemini_ntp.html where the average offset (on a scale from -100 to + 100ms) is zero, but there is noticeable jitter. I was playing with maxpoll, and the jitter seems worse with increased polling interval. The performance with Vista is now substantially improved since Dave Hart's version became available, and I am seeing good performance making a Windows system into a stratum 1 server with a GPS/PPS source. I may even be able to switch off my old FreeBSD system (which have given excellent service). Cheers, David _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
