[LINK] RFI: Clock Synchronisation in Hosts

Roger Clarke Roger.Clarke at xamax.com.au
Wed Nov 12 12:21:36 AEDT 2014

My MacOSX 10.4.11 Date and Time tool has the 'Set date & time automatically' option set, pointed at Apple Asia's server at time.asia.apple.com.  

I find it a serious concern that it doesn't work, and only synchs when I open the panel.

Having my clock run fast by c. 5 seconds per day is one thing.  But there are a lot of host devices around the place which would create far bigger problems if they got significantly out of synch with authoritative time.

What's the impression of Link Institute members about the frequency with which hosts in professionally-run organisations synch with time-servers?

A related question would be:  what tolerance would be reasonable to expect from date-time stamps compared with an authoritative time-server, e.g.
 +/- 1 second?  
 +/- 5 seconds?

Roger Clarke                                 http://www.rogerclarke.com/
Xamax Consultancy Pty Ltd      78 Sidaway St, Chapman ACT 2611 AUSTRALIA
Tel: +61 2 6288 6916                        http://about.me/roger.clarke
mailto:Roger.Clarke at xamax.com.au                http://www.xamax.com.au/ 

Visiting Professor in the Faculty of Law            University of N.S.W.
Visiting Professor in Computer Science    Australian National University

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