[LinuxPPS] offset 0 etc

Udo van den Heuvel udovdh at xs4all.nl
Sun Mar 18 08:59:51 CET 2012


On 2012-03-17 14:51, Dave Hart wrote:
> On Sat, Mar 17, 2012 at 07:15, Udo van den Heuvel <udovdh at xs4all.nl> wrote:
>> I added a GPS18 to the box with the DCF clock.
>> Works well, except:
>> Offset, ppm etc remain at zero.
>> Why is that?
> 
> Presumably because those machines are using the daemon loop discipline
> rather than kernel loop discipline.  

I used both during the past year.

> Are you passing -x or --slew to
> ntpd?  Does your ntp.conf "tinker step" or "disable kernel"?

/usr/sbin/ntpd -n -u ntp:ntp -g -x

all machines are on 24/24 for 99.9something % of the year.
So these do not have much impact.


Udo




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