[ntp:questions] Isolated Network Drift Problem

Richard B. Gilbert rgilbert88 at comcast.net
Mon Nov 24 13:36:15 UTC 2008


Cal Webster wrote:
> Thanks much to you and the others who have provided useful information.
> I'll digest all this and try something else Monday. 
> 
> Couple of notes:
> 
> "adjtimex" is not available on our systems. They're all Red Hat/Fedora
> or derived from them. I do have "hwclock" but I don't think it will do
> what was suggested.
> 
> If I set a "bias" value in the drift file won't NTP change it anyway?
> After I zeroed it out, it has been changing over time.

Yes, it will.  NTPD measures the frequency error, corrects it, and saves 
the value in the drift file.  It's useful in case you do a "warm 
restart".  If you cold start, it's best to delete the drift file first.

<big snip>




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