Create freemem.py

Author: Brian LaShomb

freemem.py

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+#!/usr/bin/env 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 )