ksm_ hinzugefügt

ksm_

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+#!/usr/bin/env python3
+#
+# ksm
+#
+# Plugin to monitor ksm - Kernel Samepage Merging.
+#
+# Author: Markus Heberling <markus@tisoft.de>
+#
+# v1.0 2011-04-05 - First version
+#
+# Usage: place in /etc/munin/plugins/ (or link it there using ln -s)
+#
+# Parameters understood:
+#
+#       config   (required)
+#       autoconf (optional - used by munin-config)
+#
+# Magic markers - optional - used by installation scripts and
+# munin-config:
+#
+#  #%# capabilities=autoconf suggest
+#  #%# family=auto
+
+import os
+import sys
+import warnings  # noqa
+
+#################################
+title = 'Kernel Samepage Merging'
+#################################
+
+
+def autoconf():
+    if os.path.exists('/sys/kernel/mm/ksm/run'):
+        for line in open('/sys/kernel/mm/ksm/run'):
+            if line.strip() == '1':
+                print('yes')
+                break
+        else:
+            print('no (/sys/kernel/mm/ksm/run does not contain "1")')
+    else:
+        print('no (/sys/kernel/mm/ksm/run not found)')
+    sys.exit(0)
+
+
+def suggest():
+    print('pages_absolute')
+    print('pages_relative')
+    print('full_scans')
+    sys.exit(0)
+
+
+def config():
+    if('ksm_pages_absolute' in sys.argv[0]):
+        print('graph_category system')
+        print('graph_title %s Pages Absolute' % (title))
+        print('graph_order pages_unshared pages_volatile pages_shared pages_sharing')
+        print('pages_shared.info how many shared pages are being used')
+        print('pages_sharing.info how many more sites are sharing them i.e. how much saved')
+        print('pages_unshared.info how many pages unique but repeatedly checked for merging')
+        print('pages_volatile.info how many pages changing too fast to be placed in a tree')
+        print('pages_shared.label pages_shared')
+        print('pages_sharing.label pages_sharing')
+        print('pages_unshared.label pages_unshared')
+        print('pages_volatile.label pages_volatile')
+        print('pages_shared.draw AREASTACK')
+        print('pages_sharing.draw AREASTACK')
+        print('pages_unshared.draw AREASTACK')
+        print('pages_volatile.draw AREASTACK')
+    elif('ksm_pages_relative' in sys.argv[0]):
+        print('graph_category system')
+        print('graph_title %s Pages Relative' % (title))
+        print('pages_sharing_shared.info ratio of sharing to shared pages')
+        print('pages_unshared_sharing.info ratio of unshared to sharing pages')
+        print('pages_sharing_shared.label pages_sharing_shared')
+        print('pages_unshared_sharing.label pages_unshared_sharing')
+        print('pages_sharing_shared.cdef pages_sharing_shared,100,*')
+        print('pages_unshared_sharing.cdef pages_unshared_sharing,100,*')
+    elif('ksm_full_scans' in sys.argv[0]):
+        print('graph_category system')
+        print('graph_title %s Full Scans' % (title))
+        print('full_scans.info how many times all mergeable areas have been scanned')
+        print('full_scans.label full_scans')
+    sys.exit(0)
+
+
+if len(sys.argv) > 1:
+    if sys.argv[1] == 'autoconf':
+        autoconf()
+    elif sys.argv[1] == 'config':
+        config()
+    elif sys.argv[1] == 'suggest':
+        suggest()
+    elif sys.argv[1]:
+        print('unknown argument "' + sys.argv[1] + '"')
+        sys.exit(1)
+
+pages_shared = int(open('/sys/kernel/mm/ksm/pages_shared').read())
+pages_sharing = int(open('/sys/kernel/mm/ksm/pages_sharing').read())
+pages_unshared = int(open('/sys/kernel/mm/ksm/pages_unshared').read())
+pages_volatile = int(open('/sys/kernel/mm/ksm/pages_volatile').read())
+full_scans = int(open('/sys/kernel/mm/ksm/full_scans').read())
+
+if('ksm_pages_absolute' in sys.argv[0]):
+    print('pages_shared.value %i' % pages_shared)
+    print('pages_sharing.value %i' % pages_sharing)
+    print('pages_unshared.value %i' % pages_unshared)
+    print('pages_volatile.value %i' % pages_volatile)
+elif('ksm_pages_relative' in sys.argv[0]):
+    print('pages_sharing_shared.value %f'
+          % (float(pages_sharing) / float(pages_shared) if pages_shared > 0 else 0))
+    print('pages_unshared_sharing.value %f'
+          % (float(pages_unshared) / float(pages_sharing) if pages_sharing > 0 else 0))
+elif('ksm_full_scans' in sys.argv[0]):
+    print('full_scans.value %i' % full_scans)