How to force kill Python3.9 processes

[dpsguard]

I have an issue that I have been struggling with for past few days and it has been documented in detail here at post, link below. Thanks @JustMeHere and @opnfwb for your helpful replies to troubleshoot the situation.

https://forum.opnsense.org/index.php?topic=35132.0

While the random and very frequent CPU peaks must come from some process that I have not been able to trace so far, I am trying to shutdown one by one things that I can, to see if misbehaving process can be found.

One thing I have now done is to killall lighttpd so that web GUI is not running (I am sure many of you must be running it like that for a headless deployment and to lessen the load and or to improve the security posture).

Second process I wanted to kill was python3.9, hoping that is not needed for any of the simple NAT router functionality needs, but trying kill, pkill or killall does not work and process returns as new PID.

However if this all trouble is from Kernel / FreeBSD 13, then I am sure above process will not work, but then many others also should be affected by this issue. This issue could be with older Xeon and Pentium i5/i7 CPUs that I have tested with, but I also tested with couple of year old Celron processor network / firewall appliance  and I have the same issue. The CPU peaks will happen even with no load or traffic passing thru if I just keep staring at the CPU graph (that I added as widget).

Thanks much for any help in advance.

[dpsguard]

Please see my latest post at original thread as the likely solution might be of interest to many others.