I was just looking through macOS 10.13, wondering why ntpd was not running.
Apple seem to have got rid of it and are now using something called timed.
I don't know anything at all about it, other than its running (I just enabled
it after stopping chronyd) and I think is using the ntpd config files. There is
a man page (posted below). It must have been around for a while as it was
available in iOS 5.0
I guess its either NOT making any adjtime() calls and is exclusively using
ntp_adjtime(), or alternatively, they have deliberately broken adjtime() in the
kernel to match what this timed is expecting. Probably the former rather than
the latter I would hope.
TIMED(8) BSD System Manager's Manual TIMED(8)
timed -- time synchronization daemon
timed takes no arguments, and users should not launch it manually.
timed maintains system clock accuracy by synchronizing the clock with
reference clocks via
technologies like NTP. Inputs are merged inside of timed, where it
calculates uncertainty to
facilitate scheduling proactive time jobs. timed is also aware of
NTP server configuration.
The cached state of timed
The timed service's property list file for launchd(8).
date(1), settimeofday(2), adjtime(2), gettimeofday(2), launchd(8)
This timed first appeared in Mac OS X 10.13 and iOS 5.0.
Darwin January 26, 2016 Darwin
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