[email protected] wrote:

> This algorithm is robust because it is based on
> special techniques (it uses common packets in the traces to provide
> synchronisation).

In the end, any such algorithm is going to have to use techniques 
similar to ntpd or chrony's.  The one advantage is that it is 
retrospective, and therefore probably better matches chrony's linear 
regression approach.  (NTP uses a low memory, incremental algorithm.)

A better example of this sort of problem, for this newsgroup, is 
probably that of deriving UTC from historical information on the 
individual clocks that contribute to UTC.

I've also done this sort of thing on data with rather larger jitters and 
the main error due to sloppy eyeball and wristwatch time setting 
(performed at not well controlled times) on specialist (although rather 
common) equipment, that doesn't support NTP.

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