[time-nuts] x86 CPU Timekeeping and clock generation

[Hal Murray]

marek.dorsic at gmail.com said:
> NTP has a drift file (usually /var/lib/ntp/ntp.drift or /var/lib/ntp/drift on
> Linux) where it stores and periodically updates the computers clock drift
> measured by ntpd in ppm. 

The drift file only gets updated occasionally.  (it's trying to avoid wearing 
out flash disks)

If you turn on loopstats, you will get much more frequent data.  A line gets 
written each time the clock is tweaked.  One of the columns is the drift.  
Details are in the man/web pages.

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