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Re: Time server change


Peter Bukowinski wrote: 
[snip]
# Overwrite ntp.conf with new values, using Apple's default polling intervals
/bin/echo server ns0 minpoll 12 maxpoll 17 >/private/etc/ntp.conf
/bin/echo server ns1 minpoll 12 maxpoll 17 >>/private/etc/ntp.conf
/bin/echo server time.apple.com minpoll 12 maxpoll 17 >>/private/etc/ntp.conf
[snip]


Just my 2 cents:

In my environment, we are required to have accurate systems clocks so that log times are accurate.

On some computers, Apple's default minpoll (12 => 2^12 or 4096 seconds) is not sufficient to accurately synchronize the clock in a reasonable amount of time. It will eventually sync, but only if the computer is on 24/7 for a good week.

I like to start with a minpoll of 6 (2^6 or 64 seconds) and reduce the maxpoll to 12, i.e.:

        server ns0 minpoll 6 maxpoll 12

The ntp daemon will automatically back off the update interval when the clock reaches a good accuracy.

--
Rob

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References: 
 >Time server change (From: "CanzoneriK" <email@hidden>)
 >Re: Time server change (From: Peter Bukowinski <email@hidden>)



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