William G. Unruh __| Canadian Institute for|____ Tel: +1(604)822-3273
Physics&Astronomy _|___ Advanced Research _|____ Fax: +1(604)822-5324
UBC, Vancouver,BC _|_ Program in Cosmology |____ un...@physics.ubc.ca
Canada V6T 1Z1 ____|____ and Gravity ______|_ www.theory.physics.ubc.ca/
On Fri, 29 Jan 2021, Bryan Christianson wrote:
Thank you Miroslav
On 29/01/2021, at 3:40 AM, Miroslav Lichvar <mlich...@redhat.com> wrote:
I guess most people here don't follow the NTP WG list. There is one
feature proposed for NTPv5 that I think would make a big difference
for chrony:
That is a very interesting paper you have written and has a result.
The increased overshoot seen in the ntpd model must be of some concern as I
would expect this is the most likely (initial) configuration. However, in the
real world, where 10ms steps should be rare, would this in fact be as
noticeable as in your tests?
But smaller steps would produce similar (theough smaller) effects, and since a
change can be regarded as made up on many small steps one after the other, the
increasing errors with higher stratum will also remain. Yes, it is unlikely,
But it gives a feeling for the problem.
It's great to see such a development and I hope it goes ahead.
Not sure how, since there is no frequency standard. Frequency is seconds per
second. But for this not to be a tautalogy, what are the two seconds in that
refering to? Anyway, yes it is certainly interesting. It is also slightly
worrying that chrony has that oscillation as one goes up the stratum level.
Can it go unstable? Certainly there is no evidence at stratum 4, but could
stratum 10 say go unstable?
Bryan Christianson
br...@whatroute.net
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