Python-Python tutorial

This article mainly introduces how to monitor linux performance and process consumption performance using python. For more information, see the following example, the specific implementation code is as follows:

#-*-Coding: UTF-8-*-"Created on Tue Jun 10 10:20:13 2014 @ author: lifeix" from collections import OrderedDictimport timeimport osdef 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 CPUinfodef 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 meminfof = open ("sysinfo. log ", 'A') def logSysInfo (cpu, mem, line): f. write ('\ ncpu: % s ------- mem: % s ------ bytes cpu: % s' % (cpu, mem, line) f. flush (); def process_info (): # obtain the Process Number of drm_processes, textlist = OS. popen ('top-bcn 1-p 12023 '). readlines () line = ''for t in textlist: if t. find ('20140901'): line = t line = line. split ('') # return line [15] if _ name __= = '_ main _' based on your needs: 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 % '% (cpu used * 100) print line cpu =' %. 2f % '% (cpuused * 100) logSysInfo (cpu, format (mi ['memfree']), line) counter t KeyboardInterrupt, e: print ("\ ncpumonit exited ") f. close () f. close ()