Re: [Linuxptp-users] Wildly jumping offsets casued by phc2sys

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

On Fri, May 29, 2015 at 04:59:29PM -0500, Robb wrote:
> For whatever reason phc2sys seems to be blowing up the offsets.
> 
> My set up is as follows:
> 
> Two CentOS 6.5 machines
> 2.6.32-504.16.2.el6.x86_64
> linuxptp-1.3-1.el6.x86_64
> 
> Machine1 eth1 [igb    5.0.5-k]    Intel I210 (rev 03)
> Machine2 eth0 [e1000e 2.3.2-k] Intel I217-LM (rev 05)

The I217-LM has a known HW bug.

> I have read that there was some problems with the e1000e driver so I tried with
> the 3.1.0.2-NAPI version, but still have the same problem as above.
> 
> Does anyone have any ideas what could be the problem here?

This isn't a driver problem but rather a HW bug.  I don't have that HW,
and I have not yet heard of any SW (driver) work arounds.  You might
ask on the e1000e list if Intel has a solution to this problem.

Thanks,
Richard