04/07/2010
Very few sites that use time synchronization systems have tested them. When asked how they know that the software/hardware is doing what is expected the response is usually “the documentation says so” or the “the software itself reports all is ok”. There are very few tools available to easily test time synchronization or easily reproduced methods for testing and this is a likely cause for this problem.
FSMLabs CTO, Cort Dougan wrote an article about verifying time synchronization that appeared in Dr. Dobbs Journal.