[time-nuts] Linux time servers

[Folkert van Heusden]

> Anyone got any good Linux time systems for PCs ?

Make sure you have a recent kernel installed with the PPS patch applied:

     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
*127.127.20.1    .GPS.            0 l    5   16  377    0.000   -0.014   0.006

That system is only up for 1 day so the offset (and jitter) will get better later on.
Typically the offset outputted by ntpq is around 0.001 and the jitter 0.000.
This is with a Garmin 18LVC.
http://wiki.enneenne.com/index.php/LinuxPPS_support

I also have a DCF77 receiver connected to a system:
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
*127.127.8.0     .DCFa.           0 l   14   64  377    0.000   -2.193   7.711

and an MSF receiver (using my http://vanheusden.com/lpc-ntpd/lindy_precision_clock.php driver),
it is a lindy precision clock connected via USB:
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
x127.127.28.0    .SHM0.           2 l   58   64    7    0.000   11.120   6.601


Folkert van Heusden

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