[ntp:questions] Offset Average (Normal)?

David J Taylor david-taylor at blueyonder.co.uk.invalid
Tue Mar 13 05:45:50 UTC 2012


"Alby VA" <albyva at empire.org> wrote in message 
news:66d5d8bc-f063-4f3e-a6d8-676a9b045fc8 at w1g2000vbx.googlegroups.com...
[]
> The Stratum 0 devices is SureGPS and its running on FreeBSD as the OS
> and AMD for the chip.
>
>
> FreeBSD godzilla.empire.org 9.0-RELEASE FreeBSD 9.0-RELEASE #0: Tue
> Feb 21 22:13:35 EST 2012  amd64

Offset on an Intel Atom with a GPS 18 LVC here is well within 10 
microseconds, FreeBSD 8.2.  I would expect the Sure to be similar.

  http://www.satsignal.eu/mrtg/pixie_ntp.html

associd=0 status=0419 leap_none, sync_uhf_radio, 1 event, leap_armed,
version="ntpd 4.2.7p255 at 1.2483 Fri Feb 10 06:04:36 UTC 2012 (1)",
processor="i386", system="FreeBSD/8.2-RELEASE-p6", leap=00, stratum=1,
precision=-19, rootdelay=0.000, rootdisp=1.180, refid=PPS,
reftime=d3095c8b.e6660497  Tue, Mar 13 2012  5:41:31.899,
clock=d3095c98.0f62614f  Tue, Mar 13 2012  5:41:44.060, peer=8406, tc=4,
mintc=3, offset=0.003, frequency=27.803, sys_jitter=0.002,
clk_jitter=0.003, clk_wander=0.003, tai=34, leapsec=201207010000,
expire=201212280000

Even on Windows it's within 50 microseconds (by eye):

  http://www.satsignal.eu/mrtg/alta_ntp_2.html

You could update to the latest ntp.

Cheers,
David 



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