[LinuxPPS] ntp: add hardpps implementation

[Remco dB]

On Sunday 10 October 2010 17:29:30 Udo van den Heuvel wrote:


> [root at epia tor]# ntpq -pn
>      remote           refid      st t when poll reach   delay   offset
> jitter
> ===========================================================================
> === o127.127.20.0    .GPS.            0 l    6   16  377    0.000    0.006
>  0.002
> +194.109.22.18   193.79.237.14    2 u   15   64  377   21.115   -3.260
> 23.025
> +194.109.20.18   193.79.237.14    2 u   55   64  377   21.114   -3.681
> 34.720
> +193.67.79.202   .PPS.            1 u   24   64  377   21.120   -2.905
> 31.162
> +193.79.237.14   .PPS.            1 u   66   64  377   21.108   -3.685
> 31.010
> *83.163.219.98   .DCFa.           1 u   63   64  377   41.072   -9.059
>  6.893
>  134.221.205.12  .FLY.            1 u  169 1024    0    0.000    0.000
>  0.000

I have a similar list, but what surprises me is that in your (and mine with 
hardpps) list TWO machines seem to be the 'preferred' peer, i.e. *83.163 (with 
a star) and your oATOM (127.127.20.0) :
 
ntpq -p
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
oPPS(0)          .PPS.            0 l   13   16  377    0.000    0.127   0.002
*freebsd         .GPS.            1 u   58   64  377    0.222    0.152   0.009
+lithium         .DCFa.           1 u   30   64  377    0.176    0.039   0.075

'Normally' I expect something like this: 
ntpq -p ntp.oma.be
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
 LOCAL(0)        .LOCL.          12 l   49   64  377    0.000    0.000   0.004
+GENERIC(0)      .GPS.            0 l   43   64  377    0.000   -0.001   0.004
oPPS(0)          .PPS.            0 l   11   64  377    0.000    0.000   0.005
+ntp1.oma.be     .PPS.            1 u   30   64  377    2.004   -0.008   0.037
-daedalus.belnet 193.190.198.43   2 u   40   64  377    2.461   -1.176   2.466

or 
ntpq -p time
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
*GPS_ONCORE(0)   .GPS.            0 l    4   16  377    0.000   -0.001   0.002
+IPv6.remco.org  .PPS.            1 u    3   64  377    0.325   -0.155   0.282
 ntp2.remco.org  .GPS.            1 u  74d   64    0   46.662   -2.707   0.000
+dr.remco.name   .DCFa.           1 u   29   64  377    0.301   -0.331   0.066

and not a list both both a '*' and 'o'