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Re: [gpsd-dev] Clarifications needed for the time-service HOWTO

From: Eric S. Raymond
Subject: Re: [gpsd-dev] Clarifications needed for the time-service HOWTO
Date: Thu, 24 Oct 2013 15:49:49 -0400
User-agent: Mutt/1.5.21 (2010-09-15)

Hal Murray <address@hidden>:
> > > .Summary of typical accuracy
> > > | Stratum 2 NTP time  |  &plusmn;100mSec
> > > | Stratum 3 NTP time  |  &plusmn;200mSec
> > These figures are from the End Run Technology page on Stratum 1 (cited).  I
> > have been unable to find another public source that is willing to commit
> > itself to an accuracy bound.  If you know of one or more, by all means point
> > us at them; they'll go in the references. 
> I'd call that BS.  The stratum is much less important than other things.  The 
> primary consideration is how well the servers are chosen, either by luck or 
> skill.

You said you thought 10mSec for Statum 2 is more typical.  So did I, then
Gary changed that to 100mSec.  I'm still looking for actual measurements.

Gary, what was your source?
                <a href="";>Eric S. Raymond</a>

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