[LinuxPPS] Problem - refclock_nmea: time_pps_kcbind failed

[Udo van den Heuvel]

Philip M. White wrote:
> On Fri, Jun 02, 2006 at 12:14:40PM +0200, Udo van den Heuvel wrote:
>> Philip M. White wrote:
>>> On Fri, Jun 02, 2006 at 05:30:04AM +0200, Udo van den Heuvel wrote:
>>>> Does dmesg show PPS timestamps etc?
>>> I've been running ntpd all evening with this setup, and the clk_fault is
>>> consistent.
>> Strange. I only get it when I have no PPS due to reception.
> 
> Well, you're absolutely right.  Apparently I have consistently-poor
> reception.  When I run ntpd in debug mode, although my jitter spikes to
> unheard-of levels, I can see that my GPS oscillates between seeing 4
> satellites to suddenly seeing 0 satellites.  When it sees 4 satellites,
> all is well, I get a clk_okay, and reach is 377.
>  When I was just watching the system logs earlier, all I could see are
> the clk_fault errors, and since this occurs frequently, it led me to
> believe that clk_fault is continuous.

OK, good news!
So things work, just fix thereception (same like I need to do).
I could send you the mrtg.cfg segment for ntp so you can setup similar
graphs like mine.


>> What does the ntpq -pn look like for the NMEA clock?
> 
>      remote           refid      st t when poll reach   delay   offset  jitter
> ==============================================================================
> *127.127.20.0    .GPS.            0 l    8   16  377    0.000   -0.683   0.083

Looks healthy!

> you.  Thanks again very much.  I'll expand http://time.qnan.org and add
> the information for LinuxPPS.

Please do. Also feedbackfor the Wiki is much appreciated I think.



Udo