[ntp:questions] Keeping NTP Honest Redux

David J Taylor david-taylor at blueyonder.not-this-bit.nor-this.co.uk.invalid
Mon Nov 9 15:21:11 UTC 2009

"Unruh" <unruh-spam at physics.ubc.ca> wrote in message 
news:6GUJm.51215$Db2.19355 at edtnps83...
> a) This is windows.

.. and so more of a challenge to get good timekeeping.

> b) Except for the abberation at 12, the offset seems to track the disk 
> temp.
> However, it is not the offset which is important but the rate. It would 
> be good
> to plot the rate as well (from loopstats) since it is the rate not the 
> offset
> that the temp changes. mind you, since that rate is ntp's idea of the 
> rate and it
> takes a while to change it ( which is why the offset is not always zero) 
> this may
> not track that well.

Here's the offset:

and here's the rate:

where values for the last two and half days have been overlaid against 


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