Try to answer to evrything:
1) the linuxptp is the "oficial" packet from ubuntu 16.04
2) the eth driver is e1000e from intel.
3) on one of the two sistem it always converge
4) on the second system it often diverge as showed in the log i sent. But some
times it converges.
5) on monday in will send you the log of a convergence
6) the problem is present even if i detach the gps.
7) what do you mean with letting the phc2sys resetting the system clock?
8) what parameter can i tune to try to fix it?
I tried to change max freq (-L) and kp ki.. but it seems that it doesnt change
anything
Inviato dal mio dispositivo Huawei
-------- Messaggio originale --------
Oggetto: Re: [Linuxptp-users] phc2sys doesn't update system clock anymore
Da: Richard Cochran
A: Omar Pighi
CC: linuxptp-users@lists.sourceforge.net
On Fri, Dec 15, 2017 at 12:05:37PM +0100, Omar Pighi via Linuxptp-users wrote:
> i used to check the sync status with
> tail -f /var/log/syslog | grep ptp
> tail -f /var/log/syslog | grep phc
>
> the output is something similar to
>
> Dec 14 16:08:34 it-eva-driving phc2sys: [23058.294] phc offset 10512340976 s2
> freq +100000000 delay 2892
BTW, you can avoid the huge phase/frequency offsets by letting phc2sys
reset the system clock.
> but one day the phc stopped to work , on both PC
> I mean:
> tail -f /var/log/syslog | grep ptp
> show , as usual, the offset decreasing and the stay stable this mean the
> ethernet board are in sync.
>
> but with
> tail -f /var/log/syslog | grep phc
>
> Dec 14 16:08:34 it-eva-driving phc2sys: [23058.294] phc offset 10512340976 s2
> freq +100000000 delay 2892
> the offset diverge and always increase..
>
> any idea?
I bet you have a bug on the GPS/GM arm machine. It is serving a clock
that is out of control and cannot be tracked by the slaves.
HTH,
Richard
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