Clock tracking

[Hal Murray]

Suppose I want to compare log file on several systems.  Assume they are all on 
the same Ethernet switch.  I'd like the clocks to track -- I don't care (much) 
how accurate they are as long as they all have the same offset/error.

Has anybody worked on this area?  (Is it simple enough not to require "work"?)

What sort of accuracy can I get?  Anybody have data or a HOWTO?


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