分析：

# pidof httpd 97144 4574 4573 4572 4571 4570 # cat /proc/97144/status | grep VmRSS VmRSS:    5032 kB

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#!/usr/bin/env python

#coding=utf8 import subprocess pidcheck = subprocess.Popen('pidof httpd',shell=True,stdout=subprocess.PIPE) pid = pidcheck.stdout.read().rstrip().split() memsize = 0 for i in pid:    filename = "/proc/"+i+"/status"    #os.path.join("/proc","i","status")     #等同于上条语句    with open(filename,"r") as statusfile:        for line in statusfile:            if line.startswith("VmRSS"):                memsize+=int(line.split()[1]) print "Apache进程占用内存：%sk" % memsize with open("/proc/meminfo","r") as memfile:    for line in memfile:        if line.startswith("MemTotal"):            memtotal = int(line.split()[1]) print "Apache进程内存占用率为：%.2f%%" % (memsize/float(memtotal)*100)

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运行结果：

# python a.py  Apache进程占用内存大小：20472k Apache进程内存占用率为：0.25%

本文转自 CrazyWing 51CTO博客，原文链接:http://blog.51cto.com/fklinux/1980631