python – 指令操作

Test cpu usage for python

#!/usr/bin/env python
"""
Produces load on all available CPU cores
"""
from multiprocessing import Pool
from multiprocessing import cpu_count

def f(x):
    while True:
        x*x

if __name__ == '__main__':
    processes = cpu_count()
    print '-' * 20
    print 'Running load on CPU'
    print 'Utilizing %d cores' % processes
    print '-' * 20
    pool = Pool(processes)
    pool.map(f, range(processes))