[ntp:questions] Re: strange sign change in clock drift with linux 2.6.15.7

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


mike wrote:

> Yesterdaw I upgraded my linux kernel from 2.6.8.1 to 2.6.15.7 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? 




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