Linux

用下面这个python

#!/usr/bin/python

 

import subprocess

import re

 

# Get process info

ps = subprocess.Popen([ 'ps' , '-caxm' , '-orss,comm' ], stdout = subprocess.PIPE).communicate()[ 0 ]

vm = subprocess.Popen([ 'vm_stat' ], stdout = subprocess.PIPE).communicate()[ 0 ]

 

# Iterate processes

processLines = ps.split( '\n' )

sep = re. compile ( '[\s]+' )

rssTotal = 0 # kB

for row in range ( 1 , len (processLines)):

     rowText = processLines[row].strip()

     rowElements = sep.split(rowText)

     try :

         rss = float (rowElements[ 0 ]) * 1024

     except :

         rss = 0 # ignore...

     rssTotal + = rss

 

# Process vm_stat

vmLines = vm.split( '\n' )

sep = re. compile ( ':[\s]+' )

vmStats = {}

for row in range ( 1 , len (vmLines) - 2 ):

     rowText = vmLines[row].strip()

     rowElements = sep.split(rowText)

     vmStats[(rowElements[ 0 ])] = int (rowElements[ 1 ].strip( '\.' )) * 4096

 

print 'Wired Memory:\t\t%d MB' % ( vmStats[ "Pages wired down" ] / 1024 / 1024 )

print 'Active Memory:\t\t%d MB' % ( vmStats[ "Pages active" ] / 1024 / 1024 )

print 'Inactive Memory:\t%d MB' % ( vmStats[ "Pages inactive" ] / 1024 / 1024 )

print 'Free Memory:\t\t%d MB' % ( vmStats[ "Pages free" ] / 1024 / 1024 )

print 'Real Mem Total (ps):\t%.3f MB' % ( rssTotal / 1024 / 1024 )

?　sh-3.2# ./mem.py

Wired Memory: 1013 MB
Active Memory: 1951 MB
Inactive Memory: 573 MB
Free Memory: 423 MB
Real Mem Total (ps): 3180.027 MB