DavidGoodwin · April 9, 2017 22:08 · Dec 15, 2015 · Oct 16, 2012
diff --git a/lxc_cpu_top.py b/lxc_cpu_top.py
@@ -0,0 +1,76 @@
+#!/usr/bin/python
+
+# See https://gist.github.com/wryfi/3902757
+
+# Crude CPU usage thing for container(s).
+
+import multiprocessing, os, re, sys, time
+import getopt
+
+cgroup_dir = '/sys/fs/cgroup/lxc/'
+
+# some sort of regexp to match container names you want to report on.
+node_rgx = u'[a-z0-9]{3,}'
+
+def main(interval, show_all = False):
+    cpus = multiprocessing.cpu_count()
+    startval = get_values()
+    time.sleep(interval)
+    endval = get_values()
+    for key, value in startval.iteritems():
+        if key in endval:
+            delta = int(endval[key]) - int(startval[key])
+        dpns = float(delta / interval)
+        dps = dpns / 1000000000
+        percent = dps / cpus
+        if show_all == False and percent <= 0.1 : # ignore < 0.1%
+            continue
+        print key + ':' + '{percent:.2%}'.format(percent=percent)
+
+
+def get_values():
+    values = {}
+
+    # read the 'parent' cgroup for total figures.
+    if os.path.exists('%s/cpuacct.usage' % cgroup_dir):
+        with open('%s/cpuacct.usage' % cgroup_dir, 'rb') as tobj:
+            values['total'] = tobj.read()
+    else:
+        print "cpuacct.usage doesn't exist for cgroup_dir (%s) - invalid cgroup config?" % cgroup_dir
+        sys.exit(1)
+
+    # no go through each cgroup(note: node_rgx) , and find usage from it
+    for fd in os.listdir(cgroup_dir):
+        if os.path.isdir('%s/%s' % (cgroup_dir, fd)) and re.match(node_rgx, fd):
+            acctf = '%s/%s/cpuacct.usage' % (cgroup_dir, fd) 
+            if os.path.isfile(acctf):
+                with open(acctf, 'rb') as accto:
+                    values[fd] = accto.read()
+    return values
+
+
+def usage() :
+    print "Usage: -i <interval> -a (show all, regardless of usage) or -h (show help). "
+
+if __name__ == "__main__":
+
+    interval = 1
+    show_all = False
+    try :
+        opts, args = getopt.getopt(sys.argv[1:], 'hai:', ['help', 'all', 'interval='])
+    except getopt.GetoptError as err:
+        print str(err);
+        usage()
+        sys.exit(1)
+    for o, a in opts:
+        if o in ( '-i', '--interval') :
+            interval = int(a)
+        elif o in ( '-a', '--all' ):
+            show_all = True
+        elif o in ( '-h', '--help' ):
+            usage()
+            sys.exit(0)
+        else:
+            assert False, "Invalid option."
+
+    main(interval, show_all)
diff --git a/lxc_load.py b/lxc_load.py
@@ -1,40 +0,0 @@
-#!/usr/bin/python
-
-import multiprocessing, os, re, sys, time
-
-cgroup_dir = '/sys/fs/cgroup'
-node_rgx = u'[a-z]*[0-9]{2}'
-interval = 1 
-
-def main():
-  cpus = multiprocessing.cpu_count()
-  startval = get_values()
-  time.sleep(interval)
-  endval = get_values()
-  for key, value in startval.iteritems():
-    if key in endval:
-      delta = int(endval[key]) - int(startval[key])
-      dpns = float(delta / interval)
-      dps = dpns / 1000000000
-      percent = dps / cpus
-      print key + ':' + '{percent:.2%}'.format(percent=percent)
-
-
-def get_values():
-  values = {}
-  if os.path.exists('%s/cpuacct.usage' % cgroup_dir):
-    with open('%s/cpuacct.usage' % cgroup_dir, 'rb') as tobj:
-      values['total'] = tobj.read()
-  else:
-    sys.exit(1)
-  for fd in os.listdir(cgroup_dir):
-    if os.path.isdir('%s/%s' % (cgroup_dir, fd)) and re.match(node_rgx, fd):
-      acctf = '%s/%s/cpuacct.usage' % (cgroup_dir, fd) 
-      if os.path.isfile(acctf):
-        with open(acctf, 'rb') as accto:
-          values[fd] = accto.read()
-  return values
-
-
-if __name__ == "__main__":
-  main()

diff --git a/lxc_load.py b/lxc_load.py
@@ -0,0 +1,40 @@
+#!/usr/bin/python
+
+import multiprocessing, os, re, sys, time
+
+cgroup_dir = '/sys/fs/cgroup'
+node_rgx = u'[a-z]*[0-9]{2}'
+interval = 1 
+
+def main():
+  cpus = multiprocessing.cpu_count()
+  startval = get_values()
+  time.sleep(interval)
+  endval = get_values()
+  for key, value in startval.iteritems():
+    if key in endval:
+      delta = int(endval[key]) - int(startval[key])
+      dpns = float(delta / interval)
+      dps = dpns / 1000000000
+      percent = dps / cpus
+      print key + ':' + '{percent:.2%}'.format(percent=percent)
+
+
+def get_values():
+  values = {}
+  if os.path.exists('%s/cpuacct.usage' % cgroup_dir):
+    with open('%s/cpuacct.usage' % cgroup_dir, 'rb') as tobj:
+      values['total'] = tobj.read()
+  else:
+    sys.exit(1)
+  for fd in os.listdir(cgroup_dir):
+    if os.path.isdir('%s/%s' % (cgroup_dir, fd)) and re.match(node_rgx, fd):
+      acctf = '%s/%s/cpuacct.usage' % (cgroup_dir, fd) 
+      if os.path.isfile(acctf):
+        with open(acctf, 'rb') as accto:
+          values[fd] = accto.read()
+  return values
+
+
+if __name__ == "__main__":
+  main()
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