[ntp:questions] Re: PPS time sync
David L. Mills
mills at udel.edu
Wed Jun 15 01:53:55 UTC 2005
Reiner,
Take a peek at the timex.h header file. The 0400 bit reveals either the
or PPS signal has severe frequency instability.
Dave
Reiner Dassing wrote:
> Hello!
>
> On ntp Version 4.2.0 and the patched Linux kernel for PPS (Kernel
> 2.4.21-NANO) we use
> the pps signal.
> But from time to time ntp syslogs the following messages:
>
> Jun 10 00:02:18 server ntpd[1038]: kernel time sync disabled 0507
> Jun 10 00:03:12 server ntpd[1038]: pps sync disabled
> Jun 10 00:03:24 server ntpd[1038]: kernel time sync enabled 0107
>
> Can somebody explain me what might happen there.
> Is there a bug in the driver?
> Something wrong with pps signal?
>
> Or can somebody point me the source to set some debug messages
> to find out the reason?
>
> Thank you very much for your help!
>
>
>
> With best regards
> Reiner Dassing
>
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