[ntp:questions] NTP - orphan mode with SAME stratum ("tos orphan 6") FAIL to sync.

David Mills mills at udel.edu
Mon Apr 6 23:44:01 UTC 2009


You scratch a sore spot as I verified over the last couple of days. You 
can always increase the mindist, but eventually the orphan servers will 
drift away from each other. The problem is the orphan server has to be 
selected before the intersection algorithm. I changed that in the 
development version and am testing it now. The result is that only the 
lowest-distance orphan server makes it to the intersection algoritihm 
and only it will be selected.


Steve Kostecke wrote:

>On 2009-04-06, David Woolley <david at djwhome.demon.co.uk> wrote:
>>Seems to me that if orphan mode is using narrow error bands, it is not 
>>going to work in many  or most cases where people would want to use it!
>>It needs to work when there never was a real time source (probably the 
>>main reason people will actually use it), and all the machines are 
>>started together with their clocks randomly spread over at least 10 
>>seconds. Otherewise, it is not going to meet typical, naive, user 
>Orphan Mode is intended to select _one_ leader from the group of Orphans
>when all other time sources are unreachable. It does so based on a
>randomly generated value.

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