def METHOD_NAME():
    threads = []
    for i in range(nthreads):
        t1 = threading.Thread(target=run_thread, args=(i,))
        threads.append(t1)
    start_t = time.perf_counter()
    for x in threads:
        x.start()
    for x in threads:
        x.join()
    end_t = time.perf_counter()
    return end_t - start_t