gauvainboiche
69 lines
1.8 KiB
Python
69 lines
1.8 KiB
Python
"""
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IO-bound : le CPU ne fait rien, il attend. Requêtes API/DB/fichiers
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CPU-bound : le CPU est sollicité
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"""
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import os, time
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from threading import Thread, current_thread
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from multiprocessing import Process, current_process
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COUNT = 200000000
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SLEEP = 10
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def io_bound(sec):
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pid = os.getpid()
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thread_name = current_thread().name
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process_name = current_process().name
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print(f"{pid} - {process_name} - {thread_name} => Start sleeping...")
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time.sleep(sec)
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print(f"{pid} - {process_name} - {thread_name} => Stop sleeping...")
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def cpu_bound(n):
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pid = os.getpid()
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thread_name = current_thread().name
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process_name = current_process().name
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print(f"{pid} - {process_name} - {thread_name} => Start counting...")
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while n > 0:
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n -= 1
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print(f"{pid} - {process_name} - {thread_name} => Stop counting...")
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if __name__ == "__main__":
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start_time = time.perf_counter()
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# io_bound(SLEEP)
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# io_bound(SLEEP)
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# t1 = Thread(target= io_bound, args= (SLEEP, ))
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# t2 = Thread(target= io_bound, args= (SLEEP, ))
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# t1.start()
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# t2.start()
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# t1.join()
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# t2.join()
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# cpu_bound(COUNT)
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# cpu_bound(COUNT)
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# t1 = Thread(target= cpu_bound, args= (COUNT, ))
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# t2 = Thread(target= cpu_bound, args= (COUNT, ))
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# t1.start()
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# t2.start()
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# t1.join()
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# t2.join()
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t1 = Process(target= cpu_bound, args= (COUNT, ))
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t2 = Process(target= cpu_bound, args= (COUNT, ))
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t1.start()
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t2.start()
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t1.join()
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t2.join()
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end_time = time.perf_counter()
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print(f"Time taken in seconds - {end_time - start_time}")
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"""
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Tâches IO-bound => Threading
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Tâches CPU-bound => Multiprocessing
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IO-bound avec connexions simultanées => asyncio
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"""
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