host/usr/share/xvm-munin-host-config/plugins/xen_cpu

   1 #!/usr/bin/python
   2
   3 from xen.xm.main import SERVER_LEGACY_XMLRPC, SERVER_XEN_API, parseServer, parseAuthentication
   4 from xen.xend import sxp
   5 import atexit
   6 import sys
   7
   8 serverType, serverURI = parseServer()
   9
  10 if serverType != SERVER_LEGACY_XMLRPC:
  11     print >>sys.stderr, "xen_cpu is untested with this Xen server type"
  12     sys.exit(1)
  13
  14 if serverType == SERVER_XEN_API:
  15     from xen.xm import XenAPI
  16     server = XenAPI.Session(serverURI)
  17     username, password = parseAuthentication()
  18     server.login_with_password(username, password)
  19     def logout():
  20         try:
  21             server.xenapi.session.logout()
  22         except:
  23             pass
  24     atexit.register(logout)
  25 else:
  26     from xen.util.xmlrpcclient import ServerProxy
  27     server = ServerProxy(serverURI)
  28
  29 if len(sys.argv) > 1:
  30     cmd = sys.argv[1]
  31 else:
  32     cmd = None
  33
  34 def getDomains():
  35     ret = {}
  36     if serverType == SERVER_XEN_API:
  37         domains = server.xenapi.VM.get_all_records()
  38         metrics = server.xenapi.VM_metrics.get_all_records()
  39         for d in domains.values():
  40             ret['uuid_'+d['uuid'].replace('-', '_')] = {'name': d['name_label'],
  41                                                         'cpu_time': sum(metrics[d['metrics']]['VCPUs_utilisation'].values()),
  42                                                         'domid': d['domid'],
  43                                                         'uuid': d['uuid'],
  44                                                         # No equivalent
  45                                                         }
  46         return ret
  47     else:
  48         domains = server.xend.domains_with_state(True, 'all', True)
  49         for d in domains:
  50             data = {'name': sxp.child_value(d, 'name', 'UNKNOWN'),
  51                     'cpu_time': sxp.child_value(d, 'cpu_time', 0.0),
  52                     'domid': sxp.child_value(d, 'domid', -1),
  53                     'uuid': sxp.child_value(d, 'uuid', 'NONE'),
  54                     }
  55             try:
  56                 sched = server.xend.domain.sched_credit_get(data['name'])
  57                 data['sched-credit'] = sched
  58             except:
  59                 data['sched-credit'] = None
  60             ret['uuid_'+sxp.child_value(d, 'uuid', 'NONE').replace('-', '_')] = data
  61         return ret
  62
  63 if cmd == 'config':
  64     print """
  65 graph_title Xen domain CPU usage
  66 graph_args --base 1000 -r --lower-limit 0 --upper-limit 800
  67 graph_vlabel %
  68 graph_scale no
  69 graph_info This graph shows how CPU time is spent by Xen domains.
  70 graph_category system
  71 graph_period second"""
  72     domains = getDomains()
  73     for d in sorted(domains):
  74         name = domains[d]['name']
  75         if name[0:2] == 'd_':
  76             name = 'db domid %d' % domains[d]['domid']
  77         print "%s.label %s" % (d, name)
  78         if domains[d]['domid'] == 0:
  79             print "%s.draw AREA" % d
  80         else:
  81             print "%s.draw STACK" % d
  82         print "%s.max 19200000000" % d # 64x 100% CPU usage
  83         print "%s.min 0" % d
  84         print "%s.type DERIVE" % d
  85         if domains[d].get('sched-credit'):
  86             print "%s.info uuid %s CPU weight %d cap %d%%" % (d, domains[d]['uuid'], domains[d]['sched-credit']['weight'], domains[d]['sched-credit']['cap'])
  87         else:
  88             print "%s.info uuid %s" % (d, domains[d]['uuid'])
  89         print "%s.cdef %s,10000,/" % (d, d)
  90     sys.exit(0)
  91
  92 domains = getDomains()
  93 for d in sorted(domains):
  94     print "%s.value %s" % (d, long(domains[d]['cpu_time']*1000000))