Re: [Linuxptp-users] Linuxptp: clock jumps

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

On Tue, May 05, 2015 at 01:58:24PM +0000, Cognault Marc wrote:
> This issue happens when both ptp4l and phc2sys are running, and doesn't happen if phc2sys is not started.
> 
> As this issue should have been solved with the e1000e rev 3.0.4, does somebody know where is the problem (linuxptp, e1000e , I218, ...) ?

This sounds very similar to a reported hardware issue with the
I217-LM.  I have no idea about when or if Intel patched their driver.
One person wrote me that he could trigger the bug by simply reading
out the clock in a tight loop in a test program.

HTH,
Richard