[ntp:questions] Re: driftfile write frequency setting?

Danny Mayer mayer at gis.net
Tue Jul 26 13:36:56 UTC 2005


Maarten Wiltink wrote:
> "Devin Bayer" <devin.bayer at rochester.edu> wrote in message
> news:1122313464.820672.37650 at f14g2000cwb.googlegroups.com...
> 
> 
>>Thanks for the responses.  I'll submit it as a feature request.  As I
>>understand it the driftfile serves a purpose, so obviously there is a
>>bad side effect of not writing it.  I didn't take the time to
>>understand what that is, but the documentation said something about how
>>it could takes hours upon starting up before it figured out the
>>information stored in the driftfile.
> 
> 
> The drift file stores the systematic part of the clock's frequency
> error. Starting NTP without it means it has to converge to that first
> before it can start tracking temperature changes and crystal aging.
> You _can_ do without it.
> 
It happens to me all the time as it can't write the file as it doesn't 
have permission.  I've left it that way to remind myself to fix the 
permission issue.

If it fails to write, then it doesn't write, but life continues and ntpd 
  just works. There's no need to change the code to have it not write or 
write once-a-day.

Danny

> Groetjes,
> Maarten Wiltink
> 



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