On 10-02-08 22:47, Jan Hoevers wrote:
> Rob Janssen wrote on 10-2-2008 13:21:
>> Udo van den Heuvel wrote:
>>> I got one of them emails even though the machine is running OK;
>>> I did not change anything about ntp, the box has been up for 71 days and
>>> yet the graph at pool.ntp.org shows an offset going downhill.
Is only the score going down, or is your offset increasing as well?
>>> What is the most likely cause?
>> In my experience (at least for my own system) the offset graph is
>> showing the network latency towards the monitoring server, rather than
>> the quality of my clock.
[...]
> That's correct, it is a network issue. The monitoring system is in
> California, for us here in europe there's an ocean and a continent in
> between.
[...]
> Note that the pool monitoring system gives only a small penalty for
> this, it's unlikely that you'll be thrown out off the pool because of
> this issue alone.
The monitor also has some other strange scoring issues. Once in awhile I
notice the max penalty even though the monitor receives my time with offset
< 10ms. Below is an example of a -5 penalty for being 4ms off :-/ Just a
bit earlier it also happened (therefore my score is around 18), but that's
just out of the CSV list now.
1202634398,"2008-02-10 09:06:38",-0.00362277030944824,1,14.3
1202632671,"2008-02-10 08:37:51",-0.00362157821655273,1,14
1202631052,"2008-02-10 08:10:52",-0.00433087348937988,-4,13.7 !!!
1202629293,"2008-02-10 07:41:33",-0.0039743185043335,1,18.6
1202627536,"2008-02-10 07:12:16",-0.000414848327636719,1,18.5
1202625804,"2008-02-10 06:43:24",-0.00486993789672852,1,18.5
Kind regards,
Arnold &:-)
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