[ntp:questions] Re: Question to NTP developers

David L. Mills mills at udel.edu
Sat Aug 26 23:44:29 UTC 2006


Eugen,

The data for all servers except your GPS and PPS show nominal behavior 
similar to the behavior observed here. The jitter for your serial 
timecode and PPS both show 4 us, which is limited by the precision. So 
far, no surprises. Hoever, your serial timecode and PPS offsets both 
show zero, which is not

Dave

Eugen COCA wrote:
> Sorry - three time sorry - due to speed I misstyped ...
> 
> Here are the numbers reported by ntpq on my best server:
> 
>      remote           refid      st t when poll reach   delay   offset
> jitter
> ==============================================================================
> +GPS_NMEA(1)     .GPS.            0 l   42   64  377    0.000    0.000
>  0.004
> -ptbtime1.ptb.de .PTB.            1 u  220  256  377   48.516   -0.772
>  0.381
> -ntps1-1.cs.tu-b .PPS.            1 u  237  256  375   54.191    0.039
>  1.023
> -ntp-p1.obspm.fr .1PPS.           1 u  199  256  377   55.164   -0.540
>  1.607
> -gps-2.mit.edu   .GPS.            1 u  229  256  377  147.056    0.018
>  1.822
> oPPS(1)          .PPS.            0 l    9   16  377    0.000    0.000
>  0.004
> +ntp2.usv.ro     .PPS.            1 u   61   64  377    0.273   -0.008
>  0.036
> -ntp3.usv.ro     .PPS.            1 u   19   64  377    0.509    0.036
>  0.014
> -ptbtime2.ptb.de .PTB.            1 u  217  256  377   48.336   -0.307
>  0.350
> -gps-1.mit.edu   .GPS.            1 u  217  256  377  147.112   -0.037
>  0.342
> 




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