Initial import

neat/cpu_utilization.py

@@ -0,0 +1,55 @@
+#! /usr/bin/env python2
+# -*- coding: utf-8 -*-
+import libvirt
+import sys
+import time
+
+
+def getNumberOfPhysicalCpus(connection):
+    return connection.getInfo()[2]
+
+
+def getDomainTotalCpuTime(domain):
+    return domain.getCPUStats(True, 0)[0]['cpu_time']
+
+
+def getCpuUtilization(domain, numberOfPhysicalCpus):
+    prevTime = time.time()
+    prevCpuTime = getDomainTotalCpuTime(domain)
+    time.sleep(1)
+    currTime = time.time()
+    currCpuTime = getDomainTotalCpuTime(domain)
+
+    print "Prev time: " + str(prevTime)
+    print "Prev cpu time: " + str(prevCpuTime)
+    print "Curr time: " + str(currTime)
+    print "Curr cpu time: " + str(currCpuTime)
+
+    print "CPU utilization: "
+    print ((currCpuTime - prevCpuTime) / ((currTime - prevTime) * 1000000000 * numberOfPhysicalCpus))
+
+
+conn = libvirt.openReadOnly(None)
+if conn is None:
+    print 'Failed to open connection to the hypervisor'
+    sys.exit(1)
+
+try:
+    dom0 = conn.lookupByName("cirros")
+except:
+    print 'Failed to find the main domain'
+    sys.exit(1)
+
+
+numberOfPhysicalCpus = getNumberOfPhysicalCpus(conn)
+print "Host CPUs: " + str(numberOfPhysicalCpus)
+
+getCpuUtilization(dom0, numberOfPhysicalCpus)
+
+
+#print "Domain 0: id %d running %s" % (dom0.ID(), dom0.OSType())
+#print dom0.info()
+#print dom0.getCPUStats(1, 0)
+#print dom0.vcpus()
+#print dom0.vcpuPinInfo(0)
+#print conn.getCPUStats(1, 0)