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On 2014-04-01T15:32:46-0700, N7RJN <[email protected]> wrote:
> I am using an Apple Mac mini with OSX 10.9.2 and I find that the clock is
> drifting significantly under OSX 10.9.2. I have been having trouble with my
> clock drifting by more than 0.5 seconds, and sometimes randomly over 4.0
> seconds per day. I contacted Apple tech support, and they indicated they
> have optimized OSX 10.9.1 and 10.9.2 for minimum power use (maximum battery
> life) rather than clock accuracy. They use a daemon called ³pacemaker² in
> conjunction with a modified NTP to minimize battery drain. Apparently
> pacemaker is used to adjust the clock, instead of NTP, however, pacemaker
> does not accurately do so.
>
> Does anyone have a suggested solution to this issue?
Disable pacemaker:
launchctl unload -w /System/Library/LaunchDaemons/com.apple.pacemaker.plist
I also built the latest ntp-dev and run that instead of the older ntpd
that comes with OS X, but just disabling pacemaker should be enough.
I had the same problem with my Mac Mini for a while, finally
discovered the pacemaker issue, and documented this here:
https://support.ntp.org/bin/view/Support/KnownOsIssues#Section_9.2.5.
- --
Kenyon Ralph
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