Should the HAVE_KERNEL_PLL conditional be abolished?
hmurray at megapathdsl.net
Mon Dec 4 02:32:27 UTC 2017
>> First: capture pulse timing info.
>> Second: adjust "drift" on system clock
>> Third: in kernel PLL to adjust drift from PPS pulses
> It *is* clear enough that ntp_adjtime() is a prerequisite for any of the
> above three things to go on.
You need drift correction implemented in the kernel to get decent
timekeeping. ntp_adjtime is just the API.
I'd be happy to assume we have drift correction. If not, there is no point
in running ntpd. Just run sntp occasionally. I don't think we should
require ntp_adjtime as the API,
OpenBSD has adjfreq.
adjfreq(const int64_t *freq, int64_t *oldfreq);
I thought I fixed things to use it, but I can't find any references to it so
I don't know what's going on.
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