#!\/usr\/bin\/python
\n
\nimport subprocess
\nimport re
\n
\n# Get process info
\nps = subprocess.Popen(['ps', '-caxm', '-orss,comm'], stdout=subprocess.PIPE).communicate()[0]
\nvm = subprocess.Popen(['vm_stat'], stdout=subprocess.PIPE).communicate()[0]
\n
\n# Iterate processes
\nprocessLines = ps.split('\\n')
\nsep = re.compile('[\\s]+')
\nrssTotal = 0 # kB
\nfor row in range(1,len(processLines)):
\nrowText = processLines[row].strip()
\nrowElements = sep.split(rowText)
\ntry:
\nrss = float(rowElements[0]) * 1024
\nexcept:
\nrss = 0 # ignore...
\nrssTotal += rss
\n
\n# Process vm_stat
\nvmLines = vm.split('\\n')
\nsep = re.compile(':[\\s]+')
\nvmStats = {}
\nfor row in range(1,len(vmLines)-2):
\nrowText = vmLines[row].strip()
\nrowElements = sep.split(rowText)
\nvmStats[(rowElements[0])] = int(rowElements[1].strip('\\.')) * 4096
\n
\nprint 'Wired Memory:\\t\\t%d MB' % ( vmStats["Pages wired down"]\/1024\/1024 )
\nprint 'Active Memory:\\t\\t%d MB' % ( vmStats["Pages active"]\/1024\/1024 )
\nprint 'Inactive Memory:\\t%d MB' % ( vmStats["Pages inactive"]\/1024\/1024 )
\nprint 'Free Memory:\\t\\t%d MB' % ( vmStats["Pages free"]\/1024\/1024 )
\nprint 'Real Mem Total (ps):\\t%.3f MB' % ( rssTotal\/1024\/1024 )<\/div><\/div>\n
We can use a bash onliner to find just Inactive ram on the machine, as this is what we are interested in<\/p>\n
vm_stat | awk '\/inactive\/ {print int($3*4\/1024)}'<\/div><\/div>\n
We could use this in a script, launched by Launcd to check at regular intervals and purge inactive memory if over, for example, 500 MB<\/p>\n
1 2 3 4 5 6 7 8 9 10 11 12 13 14 <\/div><\/td> #!\/bin\/bash<\/span>
\n
\nMM<\/span>=`<\/span>vm_stat |<\/span> awk<\/span> '\/inactive\/ {print int($3*4\/1024)}'<\/span>`<\/span>
\n
\necho<\/span> "Testing status of inactive free memory..."<\/span>
\n
\nif<\/span> [<\/span> "$MM<\/span>"<\/span> -gt<\/span> "500"<\/span> ]<\/span>; then<\/span>
\n echo<\/span> "You have too much inactive free memory."<\/span> $MM<\/span>"MB Releasing now..."<\/span>
\n purge
\n exit<\/span> 0<\/span>
\nelse<\/span>
\n echo<\/span> "Memory ammount"<\/span> $MM<\/span>"MB does not meet purge threshold."<\/span>
\n exit<\/span> 0<\/span>
\nfi<\/span><\/div><\/td><\/tr><\/tbody><\/table><\/div>\n <\/p>\n","protected":false},"excerpt":{"rendered":" Attached is a python script that shows all of you memory’s stated showmemory.py Here is the code #!\/usr\/bin\/python import subprocess import re […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1194","post","type-post","status-publish","format-standard","hentry","category-info-on-tech"],"_links":{"self":[{"href":"https:\/\/blog.designed79.co.uk\/index.php?rest_route=\/wp\/v2\/posts\/1194","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.designed79.co.uk\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.designed79.co.uk\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.designed79.co.uk\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.designed79.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1194"}],"version-history":[{"count":0,"href":"https:\/\/blog.designed79.co.uk\/index.php?rest_route=\/wp\/v2\/posts\/1194\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.designed79.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1194"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.designed79.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1194"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.designed79.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1194"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}} | |