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Re: ntp problem in broadcastclients

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On Wednesday, October 24, 2018 07:10:00 PM rhkramer@gmail.com wrote:
> On Wednesday, October 24, 2018 06:25:46 PM Gene Heskett wrote:
> > On Wednesday 24 October 2018 11:07:05 rhkramer@gmail.com wrote:
> > > I think that covers what I was going to say, but in an attempt to show
> > > off my knowledge (or lack thereof) ;-)
> > > 
> > > As I understand it, NTP tries to get an approximate correct time for
> > > each client machine by doing something like measuring the round trip
> > > time to the server and back, then dividing by two, and applying that
> > > as a correction to the broadcast time from the NTP server.
> > > 
> > > That was my understanding "back in the day" and I assume something
> > > similar is still occurring.
> > > 
> > > On the other hand, it is hard to imagine that computers on your LAN
> > > have a latency anywhere near 70 seconds in communication from your NTP
> > > "server" on the same LAN (the one broadcasting the time).
> > 
> > Standard pings are in the 1 millisecond range.
> 
> Not the problem, for sure!

Just a further thought, along similar line:

I vaguely have the impression (from posts you've made in the past) that you do 
things to make the LAN fast (for your CNC stuff) like use static IPs, and 
probably use those IPs rather than any names that have to be resolved, so I 
doubt that is a problem -- I guess I just mentioned it for posterity.

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ntp problem in broadcastclients Gene Heskett <gheskett@shentel.net> - 2018-10-24 14:30 +0200
  Re: ntp problem in broadcastclients Greg Wooledge <wooledg@eeg.ccf.org> - 2018-10-24 14:50 +0200
    Re: ntp problem in broadcastclients john doe <johndoe65534@mail.com> - 2018-10-24 16:30 +0200
      Re: ntp problem in broadcastclients rhkramer@gmail.com - 2018-10-24 17:10 +0200
        Re: ntp problem in broadcastclients Gene Heskett <gheskett@shentel.net> - 2018-10-25 00:30 +0200
          Re: ntp problem in broadcastclients rhkramer@gmail.com - 2018-10-25 01:20 +0200
            Re: ntp problem in broadcastclients rhkramer@gmail.com - 2018-10-25 01:20 +0200
      Re: ntp problem in broadcastclients Gene Heskett <gheskett@shentel.net> - 2018-10-25 00:30 +0200
        Re: ntp problem in broadcastclients Greg Wooledge <wooledg@eeg.ccf.org> - 2018-10-25 14:30 +0200
          Re: ntp problem in broadcastclients Curt <curty@free.fr> - 2018-10-25 15:40 +0200
            Re: ntp problem in broadcastclients Gene Heskett <gheskett@shentel.net> - 2018-10-25 20:10 +0200
              Re: ntp problem in broadcastclients Curt <curty@free.fr> - 2018-10-25 20:20 +0200
                Re: ntp problem in broadcastclients Gene Heskett <gheskett@shentel.net> - 2018-10-25 22:50 +0200
                Re: ntp problem in broadcastclients Greg Wooledge <wooledg@eeg.ccf.org> - 2018-10-25 23:00 +0200
                Re: ntp problem in broadcastclients Gene Heskett <gheskett@shentel.net> - 2018-10-25 23:40 +0200
                Re: ntp problem in broadcastclients Greg Wooledge <wooledg@eeg.ccf.org> - 2018-10-26 14:30 +0200
                Re: ntp problem in broadcastclients Gene Heskett <gheskett@shentel.net> - 2018-10-26 15:40 +0200
                Re: ntp problem in broadcastclients Greg Wooledge <wooledg@eeg.ccf.org> - 2018-10-26 16:00 +0200
                Re: ntp problem in broadcastclients Gene Heskett <gheskett@shentel.net> - 2018-10-26 16:40 +0200
                Re: ntp problem in broadcastclients Curt <curty@free.fr> - 2018-10-26 15:10 +0200
                Re: ntp problem in broadcastclients Gene Heskett <gheskett@shentel.net> - 2018-10-26 15:50 +0200
                Re: ntp problem in broadcastclients Michael Stone <mstone@debian.org> - 2018-10-26 16:30 +0200

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