Re: [Linuxptp-users] phc2sys trouble

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

On Sun, Jul 28, 2013 at 04:23:51PM +0000, Ledda William EXT wrote:
> Great Richard! The ntpd was running at the same time!
> 
> I have performed the following test:
> 
> 1) run pch2sys without ntpd. The two clocks remains synchronized with low offset.
> 2) run ntpd: after some minutes the offset is influenced by the (UTC - TAI)  
> 3) stop ntpd: the offset remains influenced by the UTC - TAI
> 
> I expect to see a low offset after the stop of the ntpd service. Any suggestion for this?

Sorry, I don't really follow what you mean here.

In any case, you should run phc2sys so that it correctly accounts for
the timescale difference. You i310 gets PTP timescale (TAI) from the
network, and your Linux system clock is in UTC.

If you run phc2sys in this way, then you don't need ntpd at all.

HTH,
Richard