[ntp:questions] Re: strange sign change in clock drift with linux

Markus Rehbach Markus.Rehbach at gmx.de
Tue Apr 18 19:34:35 UTC 2006

mike wrote:

> Yesterdaw I upgraded my linux kernel from to in order
> to take advantage of the PPSKit. I have changed neither the NTP version
> nor the config. After rebooting and checking that all
> was working, I noticed that the calculated local drift had switched
> from its former stable -32 ppm to a positive value of +27 ppm.

Perhaps the change of the default linux kernel HZ value (from 1000HZ to
250HZ in newer versions) is the reason why? 

More information about the questions mailing list