[ntp:questions] frequency adjusting only

Unruh unruh-spam at physics.ubc.ca
Fri Apr 25 14:29:25 UTC 2008

m.louvel at gmail.com (maxime louvel) writes:

>On Fri, Apr 25, 2008 at 8:14 AM, David Woolley
><david at ex.djwhome.demon.co.uk.invalid> wrote:

>> A node synchronized to GPS *with PPS* will be much more stable than a
>> system that is free-running or synchronised by other typical means.

>Ok , thus I  should have a better accuracy  for the nodes synchronised to
>this server than for the nodes synchronised to server itself synchronised
>through internet to a stratum 2.
>But that still doesn't solve the problem I encounter in my subnet, does it ?

>If no, the only solution would be that each node gets a PPS signal via its
>serial line ??

As I said, I have no idea why your jitter is so large. I get about 10us The
network cards are standard run of the mill ( and various) network cards.
The switches are Cisco gigabit switches.
I do use chrony, rather than ntp.
You may wnat to make sure that your ntp run at high priority


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>Maxime Louvel
>0044 7964 5555 80
>43 Allen road
>Whitemore reans
>WV60AW Wolverhampton
>United Kingdom

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