Hey folks. I am trying to understand the impact of various parallelism config items on a pants command

pants package ::

1.

process_execution_local_parallelism

2.

rule_threads_core

3. Description of

process_total_child_memory_usage

says that "Pants will default to spawning

2 * --process-execution-local-parallelism

pooled processes." How does setting different values spawn different OS processes/threads?