Issue with OP Entry Delay and Failures in LinuxCNC + EtherCAT System

I used to compile EtherCAT by myself, but since the packages became available I just install them as described here by rodw.
I take it you have run latency-histogram and have the graph nicely inside say +-20 microseconds for the servo thread?

Thank you for your response.

What version are you currently using? I'd like to try it out.I'm currently using ethercat-master (1.6.3.g805e407-1+15.3)

The line I have is
 EtherCAT: Master driver 1.6.3 1.6.3.g805e407-1+15.2
but the latest is the "+15.3" waiting for me to upgrade.
Overall it is linuxcnc 2.9

I fought the UNMATCHED messages for my system.
It is caused by the network interface being...not fast enough for lack of better words.
Intel network adapters have always worked well for me.
Realtek adapters are almost always an issue
and some tweaks are needed. rodw has documented some of that.
 

Hi .
I have the same problem , with message Slave did not sync after 5000 ms.

With the same hardware , with debian 10 and ethercat 1.5.2 and lcnc 2.9.0-pre run ok , without problem.

Because with Debian 12 and Ethercat 1.6 stable and 2.10.0 , on the same hardware, have problem ?

I have install Corbett procedure, step-by step . Some step not is ok ?

Work through this which Hakan was referring to.
docs.google.com/document/d/1jeV_4VKzVmOI...diY/edit?usp=sharing

Thanks for support.