统计nginx进程占用的物理内存

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#!/usr/bin/env python
#-*- coding:utf-8 -*-''' 统计nginx进程占用的物理内存 '''import os
import sys
import subprocessdef getPidList(proc):
cmd = '''/usr/sbin/pidof %s''' % proc
p = subprocess.Popen(cmd, stdout=subprocess.PIPE, shell=True)
pidList = p.stdout.read().split()
return pidListdef getMemSize(pidList):
sum = 0
for pid in pidList:
filename = os.path.join('/proc', pid, 'status')
with open(filename) as fd:
for line in fd.readlines():
if line.startswith('VmRSS'):
memSize = int(line.split()[1])
sum += memSize
break
return sumif __name__ == '__main__':
proc = sys.argv[1]
pidList = getPidList(proc)
totalMem = getMemSize(pidList)
print('%s占用物理内存：%sK' % (proc.capitalize(), totalMem))