[ntp:questions] Quick sync between two computers not connected to the internet

Rick Jones rick.jones2 at hp.com
Wed Mar 24 21:06:05 UTC 2010


> > On the other hand recent Linux kernels have screwed up the basic
> > calibration on startup so rebooting a machine is much worse than a
> > temperature change.  (If they have fixed it recently, I haven't
> > seen any announcement.  You can fix it by hacking a constant into
> > your kernel.)

> Yes, it seems to be fixed. My machines with the more recent kernels
> are getting about 10PPM out, while the older ones with the
> calibration problems are more like 100-200PPM out.  and varying by
> 50PPM or so between boots.

Which kernel versions are we talking about here, and are the fixes
backported to distro kernels?

rick jones
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