Yo Jacob E!
On Tue, 24 Feb 2015 21:41:52 +0000
"Keller, Jacob E" <jacob.e.kel...@intel.com> wrote:
> > And drop the bomb:
> >
> > kong ~ # phc2sys -a -r -E ntpshm -m -M 2
> > phc2sys[354.145]: uds: sendto failed: No such file or directory
> >
>
> Apparently it recovers, because you seem to have it working. The
> default should be fine. I am going to assume this is a transient
> problem due to timing between when you start ptp4l and phc2sys, where
> the us address isn't up yet.
Confirmed. Adding a 'sleep 3' to my test script fixes it. I would
suggest the error message make some mention of what it was trying
to send where for debug puposes.
> > phc2sys[365.199]: phc offset -70353239245525 s0 freq +0
> > delay 1348
> >
> > WTF was that???
>
> This is telling you that your clock time (CLOCK_REALTIME) is off by
> 70,000 seconds. That's not happy.
Except my clock time is off by about 60 uSec. At least until phc2sys
tries to 'fix' the problem.
> > I stopped it here as it tried to step my good clock by -70356s.
> >
>
> So this looks quit suspicious as a driver bug. Especially as it
> appears to be toggling between a large positive and negative value I
> am recalling something similar.
Ouch. I am on an Intel I217-LM with the e1000e driver.
Maybe time for me to try another NIC.
> What happens if you just run ptp4l without running phc2sys and
> without running chronyd etc? I want to see ptp4l running stable with
> hardware timestamping before adding extra messages.
Got a suggested config and procedure for that?
Since in the present config my ptp4l is in linreg mode, is it just a
matter of starting ptp4l in linreg mode, not runnning phc2sys, and
looking at the ptp4l debug output?
> Also what is your
> dmesg output here, so that we can see if there is any kernel message
> related to this.
Nothing at all in dmesg.
RGDS
GARY
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g...@rellim.com Tel:+1(541)382-8588
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