[ntp:questions] Loopstats jitter field mostly zero?

David Taylor david-taylor at blueyonder.co.uk.invalid
Mon Jan 7 17:35:24 UTC 2013


On 14/12/2012 08:17, David Taylor wrote:
> Reported as bug 2314:
>
>    http://bugs.ntp.org/show_bug.cgi?id=2314

There's been no at all progress with this bug report.  I don't know 
either C or the NTP internal architecture well enough to even start to 
help with this.  I saw that others were getting Raspberry Pis - did you 
see the same problem?

clk_jitter seen via ntpq -c rv is 0.000, and that recorded in the 
loopstats is 0.000000000.  sys_jitter is 0.001907.  Any other clues in 
the full output:

C:\Users\David>ntpq -c rv 192.168.0.14
associd=0 status=011d leap_none, sync_pps, 1 event, kern,
version="ntpd 4.2.7p341 at 1.2483 Sun Dec 30 19:21:11 UTC 2012 (1)",
processor="armv6l", system="Linux/3.2.27-pps-g965b922-dirty", leap=00,
stratum=1, precision=-19, rootdelay=0.000, rootdisp=1.045, refid=PPS,
reftime=d4958588.8a12b2bb  Mon, Jan  7 2013 17:34:00.539,
clock=d495858b.c605664a  Mon, Jan  7 2013 17:34:03.773, peer=24962, tc=4,
mintc=3, offset=-0.001156, frequency=-40.624, sys_jitter=0.001907,
clk_jitter=0.000, clk_wander=0.000

C:\Users\David>ntpq -c rv 192.168.0.15
associd=0 status=011d leap_none, sync_pps, 1 event, kern,
version="ntpd 4.2.7p341 at 1.2483 Sun Dec 30 19:20:46 UTC 2012 (1)",
processor="armv6l", system="Linux/3.2.27-pps-g965b922-dirty", leap=00,
stratum=1, precision=-19, rootdelay=0.000, rootdisp=1.210, refid=PPS,
reftime=d4958580.a743fc7e  Mon, Jan  7 2013 17:33:52.653,
clock=d495858e.fe914837  Mon, Jan  7 2013 17:34:06.994, peer=9101, tc=4,
mintc=3, offset=-0.000318, frequency=-22.323, sys_jitter=0.001907,
clk_jitter=0.000, clk_wander=0.000

-- 
Thanks,
David
Web: http://www.satsignal.eu



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