python監控linux性能以及進程消耗的性能

# -- 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():

#獲取drm_processes 的進程號
textlist = os.popen('top -bcn 1 -p 12023').readlines()
line = ''
for t in textlist:
    if t.find('12023'):
        line = t
line = line.split(' ')
#此處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()
        </pre>