[Python] Python - stress test all 24 CPU cores

I want to understand better how to work with multiprocessing in Python and as a test I wanted to set all cores in the CPU at 100%. First I tested it with a CPU that has 8 cores and all cores went to 100%, so that worked. Then I tested it with a CPU that has 24 cores, but for some reason it only sets 8 cores to 100% and I don't know why. There might be a system limitation or there is a limitation on the amount of parrallel processes, but I have no idea what it is exactly and how I can work around it.

System information:

• PC 1: i7-9700F, 8 cores, Windows 11 Home version 24H2
• PC 2: i7-12850HX, 24 cores, Windows 10 Enterprise version 22H2

Is there a way to work around the limitations and set 16 or all 24 cores to 100%?

Code:

import multiprocessing
import time

def get_cpu_core_count():
return multiprocessing.cpu_count()

def stress_core():
while True:
pass

if __name__ == '__main__':
num_cores = int(input("Enter the number of CPU cores to stress: "))
processes = []

for _ in range(num_cores):
p = multiprocessing.Process(target=stress_core)
p.start()
processes.append(p)

try:
while True:
time.sleep(1)
except KeyboardInterrupt:
for p in processes:
p.terminate()
p.join()


EDIT: image of the 24 cores with only 8 at 100%



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