[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
> 



More information about the questions mailing list