[ntp:questions] Client using Meinberg NTP can't sync with ntp server problem

vothanhhung22 at gmail.com vothanhhung22 at gmail.com
Thu Jul 10 08:24:05 UTC 2014


On Thursday, July 10, 2014 10:49:55 AM UTC+7, William Unruh wrote:
> On 2014-07-10, vothanhhung22 at gmail.com <vothanhhung22 at gmail.com> wrote:
> 
> > On Thursday, July 10, 2014 3:53:42 AM UTC+7, David Woolley wrote:
> 
> >> On 09/07/14 18:30, E-Mail Sent to this address will be added to the 
> 
> >> 
> 
> >> BlackLists wrote:
> 
> >> 
> 
> >> > vothanhhung22 at gmail.com wrote:
> 
> >> 
> 
> >> >>       remote           refid      st t when poll reach   delay   offset  jitter
> 
> >> 
> 
> >> >> ==============================================================================
> 
> >> 
> 
> >> >> *218.189.210.3   137.189.4.10     2 u    -  512   17   30.634  -46.455  23.503
> 
> >> 
> 
> >> > --^ It is synced !
> 
> >> 
> 
> >> >
> 
> >> 
> 
> >> >> associd=0 status=0615 leap_none, sync_ntp, 1 event, clock_sync,
> 
> >> 
> 
> >> > -----------------------------------^^^^^^^^-----------^^^^^^^^^^
> 
> >> 
> 
> >> >   It is synced !
> 
> >> 
> 
> >> >
> 
> >> 
> 
> >> >
> 
> >> 
> 
> >> >
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> >> 
> 
> >> > What makes you think it can't sync?
> 
> >> 
> 
> >> >   When clearly it is.
> 
> >> 
> 
> >> 
> 
> >> 
> 
> >> +1 (I make that 3 in total).
> 
> >> 
> 
> >> 
> 
> >> 
> 
> >> Also this isn't Meinberg's ntpd, it is the reference ntpd.  Only the 
> 
> >> 
> 
> >> installer is from Meinberg.
> 
> >
> 
> > Hi all,
> 
> >
> 
> > After 2 hours it can sync now but I would expect it sync every 15 minutes because my program need precision time.
> 
> 
> 
> You have no idea how ntpd works do you? ntpd gets the time from its
> 
> servers. It then adjusts the rate of your clock in order to bring its
> 
> time in line with those remote clocks. eventually ( 1-10 hrs) its rate
> 
> will be the same as the remote rate, and its time will be the same as
> 
> the remote time. Thereafter it will slowly adjust things to stay in
> 
> sync. 
> 
> Your time will be within somewhere between 10 usec and 10ms of UTC once
> 
> everything settles down. What does "my program needs precision time"
> 
> mean? Within 1 pico second of UTC? wihin 10 sec of UTC?

Thanks for your explaination. The reason I use NTP because I want my computer clock have the same time as the server. It is always 1 or 2 minutes behind compare to the ntp server. That's why I need it to sync the display time every 10 minutes.

But as you said "nothing should happen before about an hour from when you started. " means there is nothing I can do to "force" it sync every 10 minutes?



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