[ntp:questions] Re: OS recomendations for stratum 2 clocks

Al Dykes adykes at panix.com
Fri Sep 9 02:03:37 UTC 2005


In article <7fa26$4320407a$d4ba4194$30047 at news.chello.at>,
Helmut Wollmersdorfer  <helmut at wollmersdorfer.at> wrote:
>Brad Knowles wrote:
>
>>     There are OS and hardware configuration issues that are common to 
>> all these platforms.  On the right hardware, with the right OS 
>> configuration, any of these OSes should be adequate for most purposes.
>
>>     They will at least get you down into the millisecond range for 
>> accuracy, assuming you have good low-latency network connectivity to an 
>> adequate number of good quality upstream time servers.
>
>Sorry, but this is a little bit unrealistic. You can get down to the 
>millisecond range with public time servers during 99% of the time, _if_ 
>everything is working nice. But networks are not always working nice.
>
>Thanks my SHM radioclocks I'm within the millisecond most of the time, 
>during thunderstorms within 10 ms. If everything (no network 
>bottlenecks, no reboot, no high load) is very fine for some hours, then 
>my servers are within 0.040 ms.
>
>See my graphs at http://212.186.222.206/munin/ - I show them to naive 
>admins, who configure only one server from the pool as reference.
>
>Helmut Wollmersdorfer


Does anyone know about radios for the WWWV 60Khz time signal? 

How well does 60KHz get into buildings?

-- 
a d y k e s @ p a n i x . c o m 

Don't blame me. I voted for Gore.




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