Yo Miroslav!

On Tue, 3 Mar 2015 09:31:58 +0100
Miroslav Lichvar <mlich...@redhat.com> wrote:

> > Miroslav Lichvar <mlich...@redhat.com> wrote:
> > > The default precision of the SHM refclock in chrony is 1
> > > microsecond, it won't report jitter smaller than that. Add
> > > "precision 1e-9" to the SHM line in your chrony.conf to fix that.
> > 
> > Ah, that explains a lot.  Will that fix the jitter computation?
> 
> Yes, the +/- value in the chronyc sources output should be smaller
> than 1 us now. It's mostly a cosmetic issue, it likely won't have any
> noticeable effect on the synchronization. The precision is the minimum
> allowed value of dispersion to avoid zero dispersion with low
> resolution refclocks, e.g. with microsecond SHM it is possible to get
> several samples with 0 offset, the dispersion would be zero and it
> would then break all kinds of things.

Oh, great.

First, why does chronyd not support uSec SHM?  (I usually use the SOCK)

Two, so if I make it perfect (zero offset) things break?

RGDS
GARY
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        g...@rellim.com  Tel:+1(541)382-8588

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