Windows Time Client.


3.5 Synchronization Distance Procedure

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The distance procedure calculates the synchronization distance from the peer variables for the peer.

 

begin distance(peer) procedure;

       DELTA <-- peer.rootdelay + |peer.delay|;

       EPSILON <-- peer.rootdispersion + peer.dispersion + phi (sys.clock - peer.update);

       LAMBDA <-- EPSILON + | DELTA | over 2 ;

end distance procedure;

 

Note that, while DELTA may be negative in some cases, both EPSILON and LAMBDA are always positive.

 


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