On 12/11/14 12:21 PM, Roger Clarke wrote: > 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.
A description of problem and solution: http://support.apple.com/kb/TA24116?viewlocale=en_US Excerpt: > The defaults require several hours of constant access to the time > server in order to establish synchronization. If the initial sync > gets interrupted (by the computer going to sleep, for example), the > subsequent synchronization will not take place, causing the computer > to eventually drift from the correct time. > 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? I just checked my servers, and they are within a millisecond of correct time. My Mac and home Linux box are out by nearly 4 milliseconds, probably due to the jitter on my consumer-grade internet connection. But good enough for my requirements. ...Richard. _______________________________________________ Link mailing list [email protected] http://mailman.anu.edu.au/mailman/listinfo/link
