Need help to install 5 axis knematics

I Just fresh install 2.8.2 ISO file then update to 2.9pre last 3 days. So this Probe screen is not working with python3? Then i need to conver top-level.py using 2to3 scrip?

And another thing i don't know what wrong in latency test. I do the latency test with 10 glxgears and 3 open Firefox tab. The test done for 7 hours and the max jitter of base thread about 26000. Use this value to my ini file it always show notice "Unexpected realtime delay on task 0 with period xxxx"

until edit .ini file base thread over 42000!!!

Unfortunately it's somewhat bad timing to be using master at the moment as the change to python3 has been made very recently and it's a BIG change.
So you can try to fix the python code yourself or submit it as an issue on github.
Depending on how well you are versed in python.
I think it's going to take a while getting all the issues ironed out.

I can't give you any advise regarding base thread as I use MESA cards, so maybe somebody else can help you there.

Thanks, Waiting for stable time

Hello everyone.
back to the forum,actually I had a lot of difficulties concerning the 5 TCP setting (type: xyzac-trt) on my machine. It works well but to tell you the truth, nothing is clear to me regarding the Z axis offset values.

which theoretical value should I enter in:

setp xyzac-trt-kins.z-rot-point ...            for 180mm Z-axis travel
and how much for: setp xyzac-trt-kins.z-offset ...        with an  A axis offset of 44.6 mm.

the values ​​I entered work (I adapted them by testing the settings) but I found no logical calculation.(setp xyzac-trt-kins.z-rot-point -127 (mm)???
and (setp xyzac-trt-kins.z-rot-point -44.6  (ok) mm

Do you have a theoretical explanation?

Thanks for your help .

I think that the z-rot-point is the position of the Z axis in machine (absolute) coordinates when the tip of a tool of zero length is in the spindle (and tool length comp is enabled) and the tip of that tool is at the rotation point.
So, to an extent it depends on where you choose to measure your tool length from.