[ntp:questions] Re: those secret incantations!!!

David J Taylor david-taylor at blueyonder.co.not-this-bit.nor-this-part.uk
Tue Mar 8 22:47:30 UTC 2005


David L. Mills wrote:
> David,
>
> Expanding on my history lesson of last April in ACM Computer
> Communications Review, Dennis Fergusson of U Toronto was the original
> author of what eventually morphed into modern ntpd. This was circa
> 1984. Dennis originally intended to run it both in vivo on an embedded
> processor and in vitro as a Unix daemon. He was very interested in
> calibrating out little systematic wiggles, so he invented the fudge
> command, primarily because the configuration line length was limited.
> He and I always wished the fudge would go away at the first
> opportunity to rework the configuration code.
>
> Dave

Many thanks for that, Dave.  I didn't see the original article.

I've found that the best way to get rid of fixes like "fudge" is to start 
again from scratch.  Once there, always there!  I do appreciate the need 
to remove systematic offsets, though - a kind of digital trimmer!

Cheers,
David 





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