python－检测cpu负载

      近期研究nagios，特意写了检测cpu负载的python脚本（有借鉴网上资料），顺道练练python脚本，以下采用2种方法获取cpu负载。

1、读取cpu负载文件：

#!/usr/bin/env python #-*- coding:utf-8 -*- '''cpu负载检测 for nagios''' import sys def check_load():     loadf=open('/proc/loadavg','r')     allavg=loadf.readline()     load5avg=float(allavg.split()[0])     load10avg=float(allavg.split()[1])     load15avg=float(allavg.split()[2])     loadf.close()     print load5avg     n=0     cpunf=open('/proc/cpuinfo','r')     for i in cpunf.readlines():         if i.split(':')[0].strip() == 'processor':             n+=1     cpunf.close()     if load5avg > n:         print "critical - load average:%.2f,%.2f,%.2f" %(load5avg,load10avg,load15avg)         sys.exit(2)     else:         print "OK - load average:%.2f,%.2f,%.2f" %(load5avg,load10avg,load15avg)         sys.exit(0) if __name__ == '__main__':     check_load()

2、调用python的os模块获取cpu负载：

#!/usr/bin/env python #-*- coding:utf-8 -*- '''cpu负载检测 for nagios''' import os,sys def check_load():     (d1,d2,d3)=os.getloadavg()     print d1     n=0     cpunf=open('/proc/cpuinfo','r')     for i in cpunf.readlines():         if i.split(':')[0].strip() == 'processor':             n+=1     cpunf.close()     if d1 > n:         print "critical - load average:%.2f,%.2f,%.2f" %(d1,d2,d3)         sys.exit(2)     else:         print "OK - load average:%.2f,%.2f,%.2f" %(d1,d2,d3)         sys.exit(0) if __name__ == '__main__':     check_load()

备注：2种方法效果一样，脚本很简单，有好方法的大神，开源出来，互相学习！