Port-arm archive

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]

Re: TS-7200: time sync issues

>> On my TS-7200, ntpd has some issues synchronizing the clock.
>Hmm...maybe I don't understand your problem, but I thought that was how 
>ntpd worked.  When the clock isn't right, ntpd needs to both step the 
>clock and possibly change the clock frequency.

Here's what's supposed to happen with ntpd.

1) ntpd starts up
2) ntpd figures out how far the clock is off from real time
3) If clock offset > 128ms, then ntpd steps the time
4) As long as the clock offset is less then 128ms, ntpd adjusts the clock
   frequency to keep things in sync.

Step 3 normally happens only once, at startup, because it's not hard
to set the clock with 128ms accuracy.  But on the TS7200, that doesn't
happen.  After the clock is set, the clock is _still_ off by an amount
that varies from 100 to 900ms (that's what I've seen).  That is not normal
ntpd behavior, and clearly something is wrong on ths TS7200.


Home | Main Index | Thread Index | Old Index