[time-nuts] wifi with time sync

John Hawkinson jhawk at MIT.EDU
Fri Jan 13 16:07:11 EST 2017

Bob Camp <kb8tq at n1k.org> wrote on Fri, 13 Jan 2017
at 15:35:19 -0500 in <ADCE3C3B-A84F-4F78-93B0-824F5A9B4EFC at n1k.org>:

> What standard protocol would you recommend I run from the command
> line on my computer to get a quick estimate of the timing lag and
> variablilty on my particular WiFi connection?

Bob: I hope you read the whole of my message, rather than just the
short upper part you quoted. I said "I'm not aware of a tool that does
this today" -- I don't think there is a good answer.

==> There isn't one. <==

You can certainly use ping to get a gross upper bound. But rememnber
it's a gross upper bound, and the underlying technology can do much
better. As Chris said, ntp will do a good job telling you the delay
between two hosts (that are running ntp and talking to each other)
by sending a lot of samples and averaging over time.

But what is your application here? You haven't made it clear.  Ping is
not representative of what you could get with a wifi using a new
technology, which was what was how this thread started, and so the
context some of the anwers (esp. mine) are in. Ping is representative
of other things, though.

--jhawk at mit.edu
  John Hawkinson

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