Created
April 27, 2020 05:06
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Checking whether an I/O bound thread gets a chance to run if there's a CPU bound thread using the CPU
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| import multiprocessing | |
| import threading | |
| import time | |
| import random | |
| import math | |
| def io_thread_run(val): | |
| time.sleep(1) | |
| while True: | |
| print("thread ", val) | |
| time.sleep(1) | |
| def cpu_thread_run(val): | |
| i = 0 | |
| while True: | |
| i += math.sin(i) * math.cos(i) | |
| num_cpus = multiprocessing.cpu_count() | |
| num_cpu_threads = 1 #num_cpus * 2 | |
| num_io_threads = 1 #num_cpus | |
| threads = [] | |
| for i in range(num_cpu_threads): | |
| threads.append(threading.Thread(target=cpu_thread_run, args=(i, ))) | |
| for i in range(num_io_threads): | |
| threads.append(threading.Thread(target=io_thread_run, args=(i,))) | |
| print("Num CPUs", num_cpus) | |
| for thread in threads: | |
| thread.start() |
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