Python脚本

控制CPU使用率

#!/usr/bin/python
# -*- coding: UTF-8 -*-
"""
运行命令：python 脚本名.py -c 核心数 -t 时间
-c 不加该参数默认使用所有核心
-t 数值越小,CPU使用率越高,一般设置0.3
脚本默认执行2小时后随机睡眠10~30分钟继续执行
"""
import time, random
from time import clock
import argparse
from multiprocessing import Process
from multiprocessing import cpu_count
import math

def exec_func(bt):
    bl = 0
    while True:
        if bl == 1:
            sj = random.randint(600, 1800)
            time.sleep(sj)
        start_time = time.time()
        while True: 
            for i in range(0, 9600000):
                pass
            time.sleep(bt)
            stop_time = time.time()
            end = stop_time - start_time
            if int(end) >= 7200:
               bl = 1
               break


if __name__ == "__main__":

    parse = argparse.ArgumentParser(description='runing')

    parse.add_argument(
        "-c",
        "--count",
        default= cpu_count(),
        help='cpu count'
        )

    parse.add_argument(
        "-t",
        "--time",
        default= 0.01,
        help='cpu time'
        )


    args = parse.parse_args()

    cpu_logical_count = int(args.count)

    cpu_sleep_time = args.time

    try:
        cpu_sleep_time = int(args.time)
    except ValueError:
        try:
            cpu_sleep_time = float(args.time)
        except ValueError as ex:
            raise ValueError(ex)

#    print('
====================占用CPU核数{}.===================='.format(cpu_logical_count))
#    print('
资源浪费starting......')
#    print(cpu_sleep_time)

    try:

        p = Process(target=exec_func, args=("bt",))

        ps_list = []

        for i in range(0, cpu_logical_count):
            ps_list.append(Process(target=exec_func, args=(cpu_sleep_time,)))

        for p in ps_list:
            p.start()

        for p in ps_list:
            p.join()
    except KeyboardInterrupt:
        print("手工结束!")

参考文档：https://www.cnblogs.com/yhleng/p/11891246.html

查看CPU使用率

top -n 1|grep -v grep|grep -Eo "^.Cpu.*us"