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https://github.com/munin-monitoring/contrib.git
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110 lines
4.1 KiB
Python
Executable File
110 lines
4.1 KiB
Python
Executable File
#!/usr/bin/env python
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# -*- encoding: UTF-8 -*-
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#
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# ksm
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#
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# Plugin to monitor ksm - Kernel Samepage Merging.
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#
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# Author: Markus Heberling <markus@tisoft.de>
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#
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# v1.0 2011-04-05 - First version
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#
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# Usage: place in /etc/munin/plugins/ (or link it there using ln -s)
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#
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# Parameters understood:
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#
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# config (required)
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# autoconf (optional - used by munin-config)
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#
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# Magic markers - optional - used by installation scripts and
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# munin-config:
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#
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#%# capabilities=autoconf suggest
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#%# family=auto
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###########################################################
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category = 'system' # 'upgrades'
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title = 'Kernel Samepage Merging' # 'Upgradeable packages'
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###########################################################
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import os
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import sys
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import warnings
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def autoconf():
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if os.path.exists('/sys/kernel/mm/ksm/run'):
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for line in open('/sys/kernel/mm/ksm/run'):
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if line.strip() == '1':
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print 'yes'
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sys.exit(0)
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print 'no (/sys/kernel/mm/ksm/run must be present and value must be 1)'
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sys.exit(0)
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def suggest():
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print 'pages_absolute'
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print 'pages_relative'
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print 'full_scans'
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sys.exit(0)
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def config():
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if('ksm_pages_absolute' in sys.argv[0]):
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print 'graph_category %s' % (category)
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print 'graph_title %s Pages Absolute' % (title)
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print 'graph_order pages_unshared pages_volatile pages_shared pages_sharing'
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print 'pages_shared.info how many shared pages are being used'
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print 'pages_sharing.info how many more sites are sharing them i.e. how much saved'
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print 'pages_unshared.info how many pages unique but repeatedly checked for merging'
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print 'pages_volatile.info how many pages changing too fast to be placed in a tree'
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print 'pages_shared.label pages_shared'
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print 'pages_sharing.label pages_sharing'
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print 'pages_unshared.label pages_unshared'
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print 'pages_volatile.label pages_volatile'
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print 'pages_shared.draw AREASTACK'
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print 'pages_sharing.draw AREASTACK'
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print 'pages_unshared.draw AREASTACK'
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print 'pages_volatile.draw AREASTACK'
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elif('ksm_pages_relative' in sys.argv[0]):
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print 'graph_category %s' % (category)
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print 'graph_title %s Pages Relative' % (title)
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print 'pages_sharing_shared.info ratio of sharing to shared pages'
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print 'pages_unshared_sharing.info ratio of unshared to sharing pages'
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print 'pages_sharing_shared.label pages_sharing_shared'
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print 'pages_unshared_sharing.label pages_unshared_sharing'
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print 'pages_sharing_shared.cdef pages_sharing_shared,100,*'
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print 'pages_unshared_sharing.cdef pages_unshared_sharing,100,*'
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elif('ksm_full_scans' in sys.argv[0]):
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print 'graph_category %s' % (category)
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print 'graph_title %s Full Scans' % (title)
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print 'full_scans.info how many times all mergeable areas have been scanned'
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print 'full_scans.label full_scans'
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sys.exit(0)
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if len(sys.argv) > 1:
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if sys.argv[1] == 'autoconf':
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autoconf()
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elif sys.argv[1] == 'config':
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config()
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elif sys.argv[1] == 'suggest':
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suggest()
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elif sys.argv[1]:
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print('unknown argument "' + sys.argv[1] + '"')
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sys.exit(1)
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pages_shared=int(open('/sys/kernel/mm/ksm/pages_shared').read())
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pages_sharing=int(open('/sys/kernel/mm/ksm/pages_sharing').read())
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pages_unshared=int(open('/sys/kernel/mm/ksm/pages_unshared').read())
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pages_volatile=int(open('/sys/kernel/mm/ksm/pages_volatile').read())
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full_scans=int(open('/sys/kernel/mm/ksm/full_scans').read())
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if('ksm_pages_absolute' in sys.argv[0]):
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print 'pages_shared.value %i' % pages_shared
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print 'pages_sharing.value %i' % pages_sharing
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print 'pages_unshared.value %i' % pages_unshared
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print 'pages_volatile.value %i' % pages_volatile
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elif('ksm_pages_relative' in sys.argv[0]):
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print 'pages_sharing_shared.value %f' % (float(pages_sharing)/float(pages_shared) if pages_shared>0 else 0)
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print 'pages_unshared_sharing.value %f' % (float(pages_unshared)/float(pages_sharing) if pages_sharing>0 else 0)
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elif('ksm_full_scans' in sys.argv[0]):
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print 'full_scans.value %i' % full_scans
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