System Center 2012 Virtual Machine Manager Host CPU Utilization

Microsoft.SystemCenter.VirtualMachineManager.2012.HostCPUUtilizationMonitor (UnitMonitor)

Monitors the host CPU utilization

Knowledge Base article:

Summary

This monitor tracks the CPU performance of the host. The CPU usage has exceeded the threshold.

Causes

The virtual machines running on the host are consuming critical levels of the CPU resources on the host.

Resolutions

To free CPU resources, migrate a virtual machine to another host. You may also have Virtual Machine Manager automatically optimize host clusters by enabling dynamic optimization. For information about dynamic optimization, see the Virtual Machine Manager documentation.

Element properties:

Target

Microsoft.SystemCenter.VirtualMachineManager.2012.HyperVHost

Parent Monitor

System.Health.AvailabilityState

Category

AvailabilityHealth

Enabled

True

Alert Generate

True

Alert Severity

MatchMonitorHealth

Alert Priority

Normal

Alert Auto Resolve

True

Monitor Type

Microsoft.SystemCenter.VirtualMachineManager.2012.Performance.ScriptBasedConsecutiveSamplesTwoThresholdsMonitorType

Remotable

True

Accessibility

Public

Alert Message

Host CPU Utilization high

The host CPU utilization is {1} and has exceeded the warning or critical levels for {0}

RunAs

Default

Source Code:

<UnitMonitor ID="Microsoft.SystemCenter.VirtualMachineManager.2012.HostCPUUtilizationMonitor" Accessibility="Public" Target="VMM2012Discovery!Microsoft.SystemCenter.VirtualMachineManager.2012.HyperVHost" ParentMonitorID="SystemHealth!System.Health.AvailabilityState" Remotable="true" TypeID="Microsoft.SystemCenter.VirtualMachineManager.2012.Performance.ScriptBasedConsecutiveSamplesTwoThresholdsMonitorType">

  <Category>AvailabilityHealth</Category>

  <AlertSettings AlertMessage="Microsoft.SystemCenter.VirtualMachineManager.2012.HostCPUUtilizationMonitor.AlertMessage">

    <AlertOnState>Warning</AlertOnState>

    <AutoResolve>true</AutoResolve>

    <AlertPriority>Normal</AlertPriority>

    <AlertSeverity>MatchMonitorHealth</AlertSeverity>

    <AlertParameters>

      <AlertParameter1>$Target/Host/Property[Type="Windows!Microsoft.Windows.Computer"]/NetworkName$</AlertParameter1>

      <AlertParameter2>$Data/Context/SampleValue$</AlertParameter2>

    </AlertParameters>

  </AlertSettings>

  <OperationalStates>

    <OperationalState ID="HostCPUUtilizationReachedWarning" MonitorTypeStateID="ConditionWarn" HealthState="Warning"/>

    <OperationalState ID="HostCPUUtilizationReachedError" MonitorTypeStateID="ConditionError" HealthState="Error"/>

    <OperationalState ID="HostCPUUtilizationIsSuccess" MonitorTypeStateID="ConditionSuccess" HealthState="Success"/>

  </OperationalStates>

  <Configuration>

    <IntervalSeconds>180</IntervalSeconds>

    <TimeoutSeconds>180</TimeoutSeconds>

    <WarningThreshold>80</WarningThreshold>

    <CriticalThreshold>90</CriticalThreshold>

    <NumSamples>3</NumSamples>

    <Arguments/>

    <ScriptBody><Script>

' Copyright (c) Microsoft Corporation. All rights reserved.

' VBScript source code

' HostCPUUtilizationProvider.vbs

Option Explicit



SetLocale("en-us")



' This Script is used to check the Host CPU utilization

' which includes parent partition and CPU utilizations caused by the vms 

' Alert when the utilization of this partition is high:

' Warning: WarningThreshold%, like 80%

' Critical: CriticalThreshold, like 90%



Dim oAPI, oBag, oArgs, hostComputerName

Set oAPI = CreateObject("MOM.ScriptAPI")

Set oArgs = Wscript.Arguments



Set oBag= oAPI.CreatePropertyBag()



Dim TimePeriodMiliSeconds, strQuery, strLPCountQuery, objWMIService, colItems, sleepTime, objItem



TimePeriodMiliSeconds = 10 * 1000

strQuery = "SELECT * FROM Win32_PerfRawData_HvStats_HyperVHypervisorLogicalProcessor where Name='_Total'"

strLPCountQuery = "SELECT * FROM Win32_PerfRawData_HvStats_HyperVHypervisorLogicalProcessor"

Dim F, T1 , P1 , T2 , P2 , CPU

Set objWMIService = GetObject("winmgmts:\\localhost\root\CIMV2") 



'Get the LP Count

Set colItems = objWMIService.ExecQuery(strLPCountQuery,,48) 

Dim LPCount

LPCount = -1

For Each objItem in colItems

    LPCount = LPCount + 1

Next 



if LPCount &lt; 1 then

  WScript.quit 1

end if



'Take 2 readings

Set colItems = objWMIService.ExecQuery(strQuery,,48) 

For Each objItem in colItems

    T1 = objItem.PercentTotalRunTime

    P1 = objItem.Timestamp_PerfTime

Next



Wscript.Sleep(TimePeriodMiliSeconds)



Set colItems = objWMIService.ExecQuery(strQuery,,48) 



For Each objItem in colItems

    F = objItem.Frequency_PerfTime

    T2 = objItem.PercentTotalRunTime

    P2 = objItem.Timestamp_PerfTime

Next



If P2 - P1 = 0 Then

    Call oAPI.LogScriptEvent("HostCPUUtilizationCounter.vbs", 101, 0, "HostCPUUtilizationCounter.vbs was not called with 1 argument and was not executed.")

    Wscript.quit 1

 End If





'Calculate CPU readings with formula 

CPU = (T2 - T1) / ( P2 - P1)

CPU = (F * CPU) / LPCount

CPU = Int(CPU / 100000)



if CPU &gt; 100 then

CPU = 100

end if



if CPU &lt; 0 then

CPU = 0

end if



CPU = CInt(CPU)



call oBag.AddValue("Utilization", CPU)

Call oAPI.LogScriptEvent("HostCPUUtilizationCounter.vbs", 102, 0, "HostCPUUtilizationCounter: " &amp; Int(CPU))

Call oAPI.Return(oBag)

                        </Script></ScriptBody>

    <ObjectName>Win32_PerfRawData_HvStats_HyperVHypervisorLogicalProcessor</ObjectName>

    <CounterName>PercentTotalRunTime</CounterName>

    <InstanceName>_Total</InstanceName>

    <Value>$Data/Property[@Name='Utilization']$</Value>

  </Configuration>

</UnitMonitor>