| [chrony-dev] chrony after start/wake up |
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- To: chrony-dev@xxxxxxxxxxxxxxxxxxxx
- Subject: [chrony-dev] chrony after start/wake up
- From: "Gerriet M. Denkmann" <gerrietm@xxxxxxxxxx>
- Date: Tue, 28 Nov 2017 17:29:35 +0700
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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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