python实现监控linux性能及进程消耗性能的方法

本文以实例形式实现了python监控linux性能以及进程消耗性能的方法，具体实现代码如下：

# -*- coding: utf-8 -*- Created on Tue Jun 10 10:20:13 2014 @author: lifeix from collections import OrderedDict import time import os def cpuinfo(): lines = open(/proc/stat).readlines() for line in lines: ln = line.split() if ln[0].startswith(cpu): return ln; return [] W = cpuinfo() one_cpuTotal=long(W[1])+long(W[2])+long(W[3])+long(W[4])+long(W[5])+long(W[6])+long(W[7]) one_cpuused=long(W[1])+long(W[2])+long(W[3]) def CPUinfo(): Return the information in /proc/CPUinfo as a dictionary in the following format: CPU_info[proc0]={...} CPU_info[proc1]={...} CPUinfo=OrderedDict() procinfo=OrderedDict() nprocs = 0 f = open(/proc/cpuinfo) for line in f.readlines(): if not line.strip(): # end of one processor CPUinfo[proc%s % nprocs] = procinfo nprocs=nprocs+1 # Reset procinfo=OrderedDict() else: if len(line.split(:)) == 2: procinfo[line.split(:)[0].strip()] = line.split(:)[1].strip() else: procinfo[line.split(:)[0].strip()] = return CPUinfo def meminfo(): Return the information in /proc/meminfo as a dictionary meminfo=OrderedDict() f = open(/proc/meminfo) for line in f.readlines(): meminfo[line.split(:)[0]] = line.split(:)[1].strip() return meminfo f = open(sysinfo.log,a) def logSysInfo(cpu,mem,line): f.write(\ncpu:%s -------mem: %s------mongocpu:%s%(cpu,mem,line)) f.flush(); def process_info(): #获取drm_processes 的进程号 textlist = os.popen(top -bcn 1 -p 12023).readlines() line = for t in textlist: if t.find(12023): line = t line = line.split( ) #此处的值按照自己的需求去取 return line[15] if __name__==__main__: CPUinfo = CPUinfo() for processor in CPUinfo.keys(): print(CPUinfo[processor][model name]) f.write(cpu:%s%CPUinfo[processor][model name]) #meminfo = meminfo() #print(Total memory: {0}.format(meminfo[MemTotal])) try: while True: line = process_info() time.sleep(2) mi = meminfo() print(Free memory: {0}.format(mi[MemFree])) W = cpuinfo() two_cpuTotal=long(W[1])+long(W[2])+long(W[3])+long(W[4])+long(W[5])+long(W[6])+long(W[7]) two_cpuused=long(W[1])+long(W[2])+long(W[3]) cpuused=float(two_cpuused-one_cpuused)/(two_cpuTotal-one_cpuTotal) print (%.2f%%%(cpuused*100)) print line cpu = %.2f%%%(cpuused*100) logSysInfo(cpu,format(mi[MemFree]),line) except KeyboardInterrupt, e: print (\ncpumonit exited) f.close() f.close()