Raspberry Pi 4 and bad latency.. SOLUTIONS?

and what does this mean? thanks

Latency excursions beyond the visible graph area.

aaaah ok... i dont undeestand because i see in the middle the big Mountain.. but left and right only 2 small stripes...

i trust what you say but dont understand in all.

When not using --show , the stripes on both sides of the graph will show that there are latency excursions beyond the visible area, meaning the latency is so big it can not be shown on the graph.
Using --show will add two more fields where the number of excursions is shown.
In short:
-stripes on both sides = bad latency that can not be shown in the graph
-no stripes = latency is only as shown in the graph.

ok and the stripes on the sides are indicator for bad latency and the middle doesnt interrest?!

linuxcnc.org/docs/html/install/latency-test.html

So... 

What if LinuxCNC complains while starting...?

When running the latency test Tommy suggested, I saw a similar graph.

I migrated my working configuration to the PI4.. Then, I was visited by the dreaded latency complaint. 

Everything appears to work. I am running a Mesa ethernet card. What are the steps to debug and rectify the situation on a PI? 

Frank.hal attached. Do you need to see any more files?


 

Set the servo period in the ini file to 2000000 (2 million) and set the P value for each joint/axis to 500.

Well, that was easy! Thank you sirl
I think I'll make some chips!