[ntp:questions] NTP tunning for OWD measurements

David Woolley david at ex.djwhome.demon.invalid
Sat Oct 27 16:46:44 UTC 2012


pret3nder at gmail.com wrote:


> David Woolley is right, the project is about making the measurements,
> although I don't like the idea of doing them blindly, without
> knowing how to interpret the results. I won't have time to
> investigate the deeps of NTP, but I do want to know the basics,
> as that's one of the objectives of my thesis.

I think you misunderstood my point.  Your project is effectively, how do 
  you measure one way delay when the only source of timing is over the 
network you are studying.  It is not what are the one way delays in the 
particular network you mention.

You can only properly do that with a deep understanding of the 
protocols, as you are going to have to look for second order effects 
that may allow you to recover information that wouldn't be recoverable 
if they system only showed first order effects.

I don't know the exact context in which the project brief was given, but 
it is even possible that you were expected to realise this yourself.



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