Hey all, I've been experimenting with Linux kernel settings with respect to how they affect ntpd as I understand for the gps18lvc to work effectively, one needs a fairly accurate clock. One thing I've found is with hz=100, I'm getting an ntp.drift of around 40 but with a fairly good rootdispersion at stratum 2 of approx 15. With hz=250, the frequency drift drops to 15 but dispersion and jitter rise. Finally, I tried the high-res timers patch with and without dynamic ticks. The hr-timers have frequency at 0.039but the jitter reported by ntpq -p on peers is still higher than a vanilla kernel with hz=100.
So my question is should the drift be varying so much based on kernel hz and why would there be increased jitter with a reduced frequency error? Has anyone else tried the hrtimers patch and had good results? Shane _______________________________________________ questions mailing list [email protected] https://lists.ntp.isc.org/mailman/listinfo/questions
