Re: [Linuxptp-users] sanity_freq_limit

[Miroslav L. <mli...@re...>]

On Fri, Jun 19, 2015 at 04:15:20AM +0000, Daniel Le wrote:
> And the log messages at start in "good case". I didn't save the log where my system time was initially off a few minutes, though I remember the master offsets were above 200000000. I'll need to reproduce such condition in order to capture the exact log messages.

Your config looks good to me. The default value of first_step_threshold
is 20 microseconds, so in your test with ~1.5 millisecond initial
offset it should have stepped.

> ptp4l[792717.068]: master offset   -1567668 s0 freq  -13556 path delay      1194
> ptp4l[792718.068]: master offset   -1569978 s0 freq  -13556 path delay      1200
> ptp4l[792719.068]: master offset   -1554292 s1 freq  -13510 path delay     -4826
> ptp4l[792720.068]: master offset   -1556592 s2 freq -170726 path delay     -4826

But as we can see, it didn't step for some reason. Here is a test I
did using the same config file and it does step for me.

ptp4l[8898442.271]: master offset   -1093869 s0 freq   -1946 path delay     54642
ptp4l[8898443.271]: master offset   -1094931 s0 freq   -1946 path delay     54642
ptp4l[8898444.271]: master offset   -1102224 s1 freq   -6078 path delay     55329
ptp4l[8898445.271]: master offset       9378 s2 freq   -5131 path delay     55329

What linuxptp and kernel versions are you using?

-- 
Miroslav Lichvar