[ntp:questions] get current drift value

April xiaoxia2005a at yahoo.com
Tue Mar 1 22:01:06 UTC 2011


On Mar 1, 3:28 pm, Terje Mathisen <"terje.mathisen at tmsw.no"> wrote:
> April wrote:
> > is there a way to get the current drift value, using ntp utilities
> > such as ntpq and ntpdc, instead of opening the ntp.drift file?
>
> ntpq -c rv
>
> This command returns a lot of info:
>
> C:\>ntpq -c rv
> associd=0 status=0618 leap_none, sync_ntp, 1 event, no_sys_peer,
> version="ntpd 4.2.7p... at 1.2478-o Feb 23 13:55:41 (UTC+01:00) 2011  (1)",
> processor="x86", system="Windows", leap=00, stratum=2, precision=-19,
> rootdelay=0.952, rootdisp=24.321, refid=241.10.116.86,
> reftime=d117d2f5.dc257ff4  Tue, Mar  1 2011 21:17:57.859,
> clock=d117d4ee.e17a6898  Tue, Mar  1 2011 21:26:22.880, peer=58961, tc=6,
> mintc=3, offset=-6.749, frequency=5.941, sys_jitter=59.553,
> clk_jitter=8.906, clk_wander=0.153, ctr_frequency=-5.13
>
> Near the end you'll notice 'frequency=5.941' which is the current drift
> value!
>
> Terje
>
> --
> - <Terje.Mathisen at tmsw.no>
> "almost all programming can be viewed as an exercise in caching"

Thanks Terje!  I have an ntp v3 server and the output value looks like
ppb (instead of ppm).  Also tried ntpdc -c loopinfo which can auto
adjust and get back the values of ppm for both v3 and v4. :-)  April




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