Re: [Linuxptp-users] Should Linux PTP syn the clock used by date between PCs?

[Richard C. <ric...@gm...>]

On Wed, Nov 11, 2015 at 12:38:38PM +0000, Gil Graiber wrote:
> Hi,
> 
> I run:
> ptp4l -i eth0 -m
> The prints looks OK (even after hours).
> Once I run 
> phc2sys -r -a
> Or
> phc2sys -s eth0 -c CLOCK_REALTIME -w

Are you perhaps running phc2sys like that on the master?

Please show us the phc2sys output, with -m. 

For example, on my PC, I run ptp4l, and it locks to my GPS/PTP master
with output like what you posted.  Then, I start phc2sys, also on my
PC, and I see:

# ./phc2sys -m -q -r -a
phc2sys[19289.292]: reconfiguring after port state change
phc2sys[19289.293]: selecting CLOCK_REALTIME for synchronization
phc2sys[19289.293]: selecting eth6 as the master clock
phc2sys[19289.293]: phc offset     61893 s0 freq  +11746 delay   5743
phc2sys[19290.293]: phc offset     61937 s1 freq  +11790 delay   5698
phc2sys[19291.293]: phc offset       674 s2 freq  +12464 delay   5574
phc2sys[19292.293]: phc offset       715 s2 freq  +12707 delay   5694
phc2sys[19293.293]: phc offset      -209 s2 freq  +11998 delay   5748
phc2sys[19294.294]: phc offset      -546 s2 freq  +11598 delay   5575
phc2sys[19295.294]: phc offset       293 s2 freq  +12273 delay   5758
phc2sys[19296.294]: phc offset       174 s2 freq  +12242 delay   5719

and so on.

Thanks,
Richard