>> python3.10 create_task_overhead.py
  100,000 tasks   185,694 tasks per/s
  200,000 tasks   165,581 tasks per/s
  300,000 tasks   170,857 tasks per/s
  400,000 tasks   159,081 tasks per/s
  500,000 tasks   162,640 tasks per/s
  600,000 tasks   158,779 tasks per/s
  700,000 tasks   161,779 tasks per/s
  800,000 tasks   179,965 tasks per/s
  900,000 tasks   160,913 tasks per/s
  1,000,000 tasks  162,767 tasks per/s

  >> python3.11 create_task_overhead.py
  100,000 tasks   289,318 tasks per/s
  200,000 tasks   265,293 tasks per/s
  300,000 tasks   266,011 tasks per/s
  400,000 tasks   259,821 tasks per/s
  500,000 tasks   251,819 tasks per/s
  600,000 tasks   267,441 tasks per/s
  700,000 tasks   251,789 tasks per/s
  800,000 tasks   254,303 tasks per/s
  900,000 tasks   249,894 tasks per/s
  1,000,000 tasks  266,581 tasks per/s

    Python 3.11.0 (heads/3.11-dirty:8d3dd5b9647, Dec  7 2022, 08:17:48) [Clang 14.0.0 (clang-1400.0.29.202)]
 on darwin
    Type "help", "copyright", "credits" or "license" for more information.
    >>> 
    [~/Documents]$ python test.py
    100,000 tasks    127,992 tasks per/s
    200,000 tasks    115,960 tasks per/s
    300,000 tasks    117,205 tasks per/s
    400,000 tasks    113,131 tasks per/s
    500,000 tasks    109,609 tasks per/s
    600,000 tasks    116,649 tasks per/s
    700,000 tasks    110,743 tasks per/s
    800,000 tasks    111,361 tasks per/s
    900,000 tasks    109,688 tasks per/s
    1,000,000 tasks          117,064 tasks per/s

  100,000 tasks   155,257 tasks per/s
  200,000 tasks   138,569 tasks per/s
  300,000 tasks   134,779 tasks per/s
  400,000 tasks   144,371 tasks per/s
  500,000 tasks   135,672 tasks per/s
  600,000 tasks   135,299 tasks per/s
  700,000 tasks   146,456 tasks per/s
  800,000 tasks   139,192 tasks per/s

  100,000 tasks    177,778 tasks per/s
  200,000 tasks    150,588 tasks per/s
  300,000 tasks    152,381 tasks per/s
  400,000 tasks    134,031 tasks per/s
  500,000 tasks    160,804 tasks per/s
  600,000 tasks    129,293 tasks per/s

100,000 tasks 184,167 tasks per/s

200,000 tasks 160,964 tasks per/s

300,000 tasks 165,278 tasks per/s

400,000 tasks 149,577 tasks per/s

500,000 tasks 160,593 tasks per/s

600,000 tasks 168,098 tasks per/s

700,000 tasks 161,837 tasks per/s

800,000 tasks 160,364 tasks per/s

900,000 tasks 149,479 tasks per/s

1,000,000 tasks 155,919 tasks per/s

If your Linux machine is working an order of magnitude slower than you'd expect from the hardware, that's the first thing I'd check.