Re: [Linuxptp-users] Newly Configured Machine Has Very Large Sys Offset

[Jacob K. <jac...@in...>]

On 6/27/2023 9:03 PM, Joshua Quesenberry wrote:
> If I don't do one per NIC how do devices connected to each different
> NIC do the PTP syncing? For instance, I have three LiDARs each with
> dedicated NIC and needing to receive the PTP time from this system in
> order to be properly sync'd to each other.
> 

That setup sounds a lot like the "just a bunch of clocks" mode of ptp4l.

> Some new information. Of the six NICs, enp0s31f6 that I was working
> with above is an I219-LM and the other five are I225-IT. The five
> I225-IT appear to be working as I had expected. I have no idea why the
> I219-LM is not working properly. I have stumbled upon this post:
> https://community.intel.com/t5/Ethernet-Products/Onboard-Intel-I219-LM-PTP-synchronization-problem-Driver-e1000e/td-p/1420598
> which shows that others are also running into similar issues with the
> device and I've just posted there too. Please give it a read in case
> something stands out.
> 

It looks like that hardware uses the e1000e driver. I recall that driver
having many issues and fixes or workarounds for hardware. Are you
certain you're on an up to date version of the driver?

I am not very familiar with that device, so I am not certain about the
level of quality for its clock or timestamps.