Get per CPU usage

The following is a script for using Python to get the server per CPU usage.

#!/usr/bin/env python#-*-coding:utf-8-*-ImportRe,timedef_read_cpu_usage ():"""Read The current system CPU usage From/proc/stat"""Statfile="/proc/stat"cpulist= []         Try: F= Open (Statfile,'R') Lines=F.readlines ()except:                 Print "Error:can not open%s,the system cannot continue to run"%(Statfile)return []          forLineinchlines:tmplist=Line.split ()ifLen (tmplist) < 5:                Continue             forBinchtmplist:m= Re.search (r'cpu\d+', B)ifM is  notNone:cpulist.append (tmplist) f.close ()returncpulistdefget_cpu_usage (): CPUUsage={} Cpustart={} cpuend={} Linestart=_read_cpu_usage ()if  notLinestart:return0 forCpustrinchLinestart:usni=long (Cpustr[1]) +long (cpustr[2]) +long (cpustr[3]) +long (cpustr[5]) +long (cpustr[6]) +long (cpustr[7]) +long (cpustr[4]) USN=long (Cpustr[1]) +long (cpustr[2]) +long (cpustr[3]) cpustart[cpustr[0]]= str (USNI) +":"+STR (USN) Sleep= 2time.sleep (sleep) lineend=_read_cpu_usage ()if  notLineend:return0 forCpustrinchLineend:usni=long (Cpustr[1]) +long (cpustr[2]) +long (cpustr[3]) +long (cpustr[5]) +long (cpustr[6]) +long (cpustr[7]) +long (cpustr[4]) USN=long (Cpustr[1]) +long (cpustr[2]) +long (cpustr[3]) cpuend[cpustr[0]]= str (USNI) +":"+Str (USN) forLineinchCpustart:start= Cpustart[line].split (':') USNI1,USN1= Float (start[0]), float (start[1]) End= Cpuend[line].split (':') USNI2,USN2= Float (end[0]), float (end[1]) Cpuper= (USN2-USN1)/(usni2-usni1) Cpuusage[line]= Int (100*cpuper)returnCPUUsageif __name__=='__main__': A=get_cpu_usage ()PrintA

Get per CPU usage