[ntp:questions] Calling ONCORE owners...

Carl R. Friend ax197 at osfn.org
Sun Jan 1 15:54:44 UTC 2006


   G'day, all.

   I've got a Motorola ONCORE UT+ receiver coupled to a Linux box
running NTP 4.1.1 at 1.786  and OS version 2.4.29-NANO.  At the duly
appointed hour last evening when I was supposed to get 23:59:60,
the direct output of the satellite receiver indicated such but NTP
never altered the system clock.  Further, even with the leap bit set
from the receiver, the leap bits were not set in NTP.  Needless to
say, this caused the computer clock to go into a tizzy and it finally
stepped about a half-hour later.

   Here's a look just before and just after the leap second:



ntpq> pe
     remote           refid      st t when poll reach   delay   offset 
jitter
==============================================================================
*GPS_ONCORE(0)   .GPS.            0 l   13   16  377    0.000    0.004  
0.004
 LOCAL(0)        LOCAL(0)        14 l   38   64  377    0.000    0.000  
0.004
+dsl081-199-165. .GPS.            1 u   53   64  377  131.570    5.731  
7.171
-sip.eicat.ca    ox.eicat.ca      3 -   39   64  377  149.506    0.459  
0.437
-underworld.drax .DCFa.           1 -   23   64  377  231.685   20.352  
0.111
+elektra.ultra.n tick.usno.navy.  2 -   32   64  377  131.328    3.508  
2.774
ntpq> pstatus 50068
status=9614 reach, conf, sel_sys.peer, 1 event, event_reach,
srcadr=GPS_ONCORE(0), srcport=123, dstadr=127.0.0.1, dstport=123,
leap=00, stratum=0, precision=-26, rootdelay=0.000,
rootdispersion=0.004, refid=GPS, reach=377, unreach=0, hmode=3, pmode=4,
hpoll=4, ppoll=4, flash=00 ok, keyid=0, offset=0.004, delay=0.000,
dispersion=0.246, jitter=0.004,
reftime=c76199ff.ffffc41f  Sat, Dec 31 2005 18:59:59.999,
org=c76199ff.ffffc41f  Sat, Dec 31 2005 18:59:59.999,
rec=c7619a00.4c3dff3f  Sat, Dec 31 2005 19:00:00.297,
xmt=c76199ff.da759ab6  Sat, Dec 31 2005 18:59:59.853,
filtdelay=     0.00    0.00    0.00    0.00    0.00    0.00    0.00   
0.00,
filtoffset=    0.00    0.00    0.00    0.00    0.00    0.00    0.00   
0.00,
filtdisp=      0.00    0.26    0.50    0.75    0.99    1.26    1.52   
1.77
ntpq> pe
     remote           refid      st t when poll reach   delay   offset 
jitter
==============================================================================
xGPS_ONCORE(0)   .GPS.            0 l    3   16  377    0.000  -1000.0  
0.004
 LOCAL(0)        LOCAL(0)        14 l   62   64  377    0.000    0.000  
0.004
*dsl081-199-165. .GPS.            1 u   13  128  377  141.613    4.126  
1.604
-sip.eicat.ca    ox.eicat.ca      3 -   63   64  377  149.506    0.459  
0.437
+underworld.drax .DCFa.           1 -   47   64  377  231.685   20.352  
0.111
+elektra.ultra.n ntp0.usno.navy.  2 -   56   64  377  131.328    3.508  
2.774
ntpq>

   Did anyone else with an ONCORE clock see this behaviour?  Does
it suggest a bug in the clock-driver code or something else?

   Cheers.

-- 
+------------------------------------------------+---------------------+
| Carl Richard Friend (UNIX Sysadmin)            | West Boylston       |
| Minicomputer Collector / Enthusiast            | Massachusetts, USA  |
| mailto:crfriend at rcn.com                        +---------------------+
| http://users.rcn.com/crfriend/museum           | ICBM: 42:22N 71:47W |
+------------------------------------------------+---------------------+




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