Yo Hal! On Tue, 31 Jan 2017 17:05:21 -0800 Hal Murray <hmur...@megapathdsl.net> wrote:
> >> Looks like ntpd is happy now.
> > And what was the magic incantation? Can you reset and make ntpd
> > fail again?
>
> Installing adjtimex.
>
> Aside from the command line, it's got a mode where tries to adjust
> the drift like ntpd does. I think saves stuff on the disk so when
> you run it again it can see how far the clock has drifted. I don't
> know how that interacts with ntpd.
I think adjtimex does not save anywhere but in kernel RAM.
> > We are not talking about most, we are talking about the outliers.
>
> There are two types of outliers. One is hardware, a specific box has
> a weird crystal or out of date firmware or... The other is
> systematic. Someplace in the long chain of hardware, documentation,
> firmware, kernel, libraries, and ntpd isn't working right. I think
> this one is worth understanding. If/when we understand it, we can
> try to come up with a reasonable work-around.
Yup.
> > Not tried chronyd yet?
>
> I have it running on an OpenBSD system. It seems to wander off
> occasionally. I haven't investigated.
Not tried chronyd on this problem Mac and OS then? Would be nice to
know of chronyd suffered the same problem on ntpd on this problem host
and OS.
> >> I think it's reasonable for ntpd to expect the kernel clock to be
> >> reasonably close.
> > I don't.
>
> We should probably agree to disagree.
I'll have to prefer my personal experience to your expectations on
'reasonable'.
RGDS
GARY
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