[chrony-dev] chrony after start/wake up

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I noticed that it takes chrony about 20 - 40 minutes after start/wake up to settle down to a plausible value for frequency.
(The offsets are fine after about 10 minutes - and not too bad before this).

What about this ( n =  20 to 40 minutes ):

if  t = time since start/wake up < n and  /var/lib/chrony/drift exists then
	usedFrequency = [  (n-t) * frequency from  /var/lib/chrony/drift  +  t * computed frequency from insuffizient data ] / n
else
	usedFrequency = computed frequency from no longer insuffizient data
end if


Gerriet.


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