On 19 December 2013 01:16, unruh <[email protected]> wrote: > So it repeats approx every 1.5 hours, quite regularly (slightly longer > period at night than during the day). Are you doing > something on the machine every two hours? 9 minutes is a long time ( > over 30 time periods) so disk activity or other interrupt delays does > not seem a reasonable explanation. I really do not have any idea why > there would be this extremely regular long term delay
Nope, this is a fresh FreeBSD 9.2 installation. Just the base system and the kernel were installed. I also compiled a new kernel with PPS support. Only ntpd is running, and of course sshd for remote connection. In the end what is this clock offset? I suppose it is the difference between my laptop's internal clock and the precise timing provided by the GPS's PPS signal, right? When the laptop's internal clock remains behind, I have a negative clock offset, and when the laptop's internal clock rushes ahead I have a positive clock offset.... NTP will always tries to align the internal clock of the laptop with the precise timing received from the GPS's PPS signal. Just wondering, could it be that the heating of the laptop causes these spikes? The laptop heats itself, then the fans start working for a while, until the temperature goes down. Then the laptop starts to heat again, and so on... _______________________________________________ questions mailing list [email protected] http://lists.ntp.org/listinfo/questions
