A multiprocessing system has more than two processors whereas Multithreading is a program execution technique that allows a single process to have multiple code segments. Multiprocessing improves the reliability of the system while in the multithreading process, each thread runs parallel to each other. Multiprocessing helps you to increase Python Multi-Threading vs Multi-Processing Bench-marking the two methods of concurrent task execution: multi-threading and multiprocessing in Python. Furqan Butt · Follow Published in Towards Data Science · 6 min read · Jun 9, 2020 -- 1 Photo by Chris Ried on Unsplash.com So when you use multi-threading (multiple threads in one process), you'll see no performance boost from having 2, 4 or 8 CPUs / cores. Multi-processing is different. In multi-processing, multiple separate Python processes are used (with one thread per process) and each process has its own separate GIL. .

multiple threads vs multiple processes