[LinuxPPS] getting the PPS source

[Ben DuPont]

Udo van den Heuvel wrote:
> On 2010-03-21 17:25, Ben DuPont wrote:
>   
>> Is the git repository still the best way to get the PPS source?  The 
>> documentation states that it will download about 120 MB but it's looking 
>> more like 550-600 MB and it's downloading very slowly (7KB/s).
>>
>> The hardware I have is here (Garmin 18 lvc): 
>> https://buy.garmin.com/shop/shop.do?pID=27594&pvID=14555
>>     
>
> The kernel.org kernel source plus perhaps a patch from
> http://ftp.enneenne.com/pub/misc/linuxpps/patches/tests/ could do.
>
> Any additional patches are optional and could be tried afterwards.
>
> Udo
>
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>   
It looks like I have NTP talking to a PPS kernel but it doesn't seem to 
be working quite right.
When I run nptq -p, the offset and jitter bounce around like crazy.
Here's what I have in ntp.conf:

server 127.127.20.0 prefer minpoll 4
fudge 127.127.20.0 flag1 1 flag3 1 flag2 0 time1 0.0

And example output from ntp -q:

     remote           refid      st t when poll reach   delay   offset  
jitter
==============================================================================
*GPS_NMEA(0)     .GPS.            0 l   14   16  377    0.000  -27.780  
12.313

I'm using ntp-4.2.2p4 with this patch: 
http://ftp.enneenne.com/pub/misc/linuxpps/refclocks/nmea/nmea.patch

Do I need to be more patient for the clock to sync or is something not 
working properly?

Ben