David J Taylor wrote: > Yesterday I undated my Windows Vista system to Service Pack 1, and whilst > NTP initially appeared to work correctly, it soon developed an oscillating > state. See: > > http://www.satsignal.eu/ntp/NTP-on-Windows-Vista.html
They look like damped oscillations, so the questions are: - why are you getting time steps; - why is the response not critically damped. Can I just confirm that this system is connected to its time sources only by ethernet, and that that ethernet has low latency drivers? Apart from that one might suspect some complex power management feature. Under damping tends to indicate that ntpd is miscalculating the frequency correction. On Windows, the API it uses directly controls the software clock rate. _______________________________________________ questions mailing list questions@lists.ntp.org https://lists.ntp.org/mailman/listinfo/questions