On 31/08/12 15:09, Rainer Traut wrote: > I see in sysconfig/ntpd the option g is set which means huge offset is > one time ignored. But my understanding of ntpd is, it slows or > accelerated kernel clock but does not make huge jumps... With the options you mentioned, NTPd will make a big jump once at startup. If the clock is wrong by (if I remember correctly) about 30 mins it will take so long to drift back to being correct that NTPd gives up.