Just as a follow up in case anyone else comes here looking for the same info:
I had to first add “–cap-add SYS_PTRACE” to my docker run command to enable py-spy to run without permission errors.
Next, exec into your container by either using the console in portainer or via SSH.
docker exec -it <your_container_name> /bin/bash
Once inside the container then run the following to install py-spy:
echo 'manylinux1_compatible = True' > /usr/local/lib/python3.8/site-packages/_manylinux.py
pip install py-spy
After that run top to find the PID of HA. You should see something like the following:
the one you want is the python3 program for HA (first one in the list there).
then using the PID from above run the following (replacing my PID of 205 with your own):
py-spy record --pid 205 --output /config/www/py-spy.svg --duration 120
This will run a sample and eventually write a py-spy.svg to your www folder.
The only thing I couldn’t get to work is the recoprding didn’t stop automatically after 120 seconds. I had to stop it manually by hitting ctrl-c.
Also I kept getting a continous string of warnings that the sdampling was behind and to reduce the sampling rate. I don’t know how to do that so I just let it run. I’m not sure if it impacted the accuracy of the recording or not tho TBH.