[LinuxPPS] 1PPS Atom Ref Clock Not being Polled?

[K. Connolly]

On Wed, 22 Jul 2009, Udo van den Heuvel wrote:

> Shortest route would be to use the ppsldisc tool.
>
>> I tried running ppsldisc and ntpd and nothing really changed. I got
>> positive system messages and my signal shows up in ntpq, but again, it
>> never gets polled...
>
> Strange.
> Are you sure you killed all ldattach instances?

Yep. killed all ldattach instances, killed ntpd. Run ppsldisc /dev/ttyS0 
and get:

Jul 22 16:34:11 nu1vme02 kernel: new PPS source serial0 at ID 0
Jul 22 16:34:11 nu1vme02 kernel: PPS source #0 "/dev/ttyS0" added

Then start ntpd (4.2.4p5): ntpd -g:

Jul 22 16:36:27 nu1vme02 ntpd[27939]: ntpd 4.2.4p5 at 1.1541-o Tue Jul 21 
08:02:16 UTC 2009 (2)
Jul 22 16:36:27 nu1vme02 ntpd[27940]: precision = 1.000 usec
Jul 22 16:36:27 nu1vme02 ntpd[27940]: Listening on interface #0 wildcard, 
0.0.0.0#123 Disabled
Jul 22 16:36:27 nu1vme02 ntpd[27940]: Listening on interface #1 wildcard, 
::#123 Disabled
Jul 22 16:36:27 nu1vme02 ntpd[27940]: Listening on interface #2 lo, 
::1#123 Enabled
Jul 22 16:36:27 nu1vme02 ntpd[27940]: Listening on interface #3 eth0, 
fe80::2e0:ff:fe13:282a#123 Enabled
Jul 22 16:36:27 nu1vme02 ntpd[27940]: Listening on interface #4 lo, 
127.0.0.1#123 Enabled
Jul 22 16:36:27 nu1vme02 ntpd[27940]: Listening on interface #5 eth0, 
10.128.1.192#123 Enabled
Jul 22 16:36:27 nu1vme02 ntpd[27940]: kernel time sync status 2040
Jul 22 16:36:29 nu1vme02 ntpd[27940]: frequency initialized 5.274 PPM from 
/var/lib/ntp/drift

After a few minutes it syncs to a peer and does as listed in my previous 
e-mail (i.e. appears to work fine, but no PPS polling occurs :( )

Any further thoughts? Much appreciated.

Kevin





>
> Udo
>