CPU Percentage Interrupt Time

Microsoft.Windows.Server.10.0.Processor.PercentInterruptTime (UnitMonitor)

Monitors the CPU Percentage Interrupt Time

Knowledge Base article:

Summary

The % Interrupt Time (Processor Information\% Interrupt Time) for the processor has exceeded the threshold. Overall system performance may significantly diminish which will result in poor operating system and application performance.

% Interrupt Time is the time the processor spends receiving and servicing hardware interrupts during sample intervals. This value is an indirect indicator of the activity of devices that generate interrupts, such as the system clock, the mouse, disk drivers, data communication lines, network interface cards and other peripheral devices. These devices normally interrupt the processor when they have completed a task or require attention.

Causes

A high % Interrupt Time most often indicates that there is a problem with a hardware device.

Resolutions

To view recent Processor Information\% Interrupt Time history you can use the following view:

Start Processor Performance View

The % Interrupt Time counter will not specifically identify the device that is causing a high % Interrupt Time. To identify the device use Kernrate Viewer (KrView.exe) or Process Trace Information events to determine which ISRs are being dispatched most frequently.

Once the device has been identified the vendor should be contacted to determine a final resolution.

Additional

For more information about the Kernrate Viewer, see the Microsoft Download Center Web site at http://go.microsoft.com/fwlink/?LinkId=27748.

For more information about the processor object, see the Microsoft Corporation Web site at http://go.microsoft.com/fwlink/?LinkId=27758.

For more information about analyzing processor activity, see the Microsoft® Windows 2000 Resource Kits Web site at http://go.microsoft.com/fwlink/?LinkId=27678.

Element properties:

TargetMicrosoft.Windows.Server.10.0.Processor
Parent MonitorMicrosoft.Windows.Server.10.0.Processor.PerformanceRollup
CategoryPerformanceHealth
EnabledFalse
Alert GenerateFalse
Alert Auto ResolveTrue
Monitor TypeMicrosoft.Windows.Server.10.0.Processor.Monitortype
RemotableTrue
AccessibilityPublic
RunAsDefault

Source Code:

<UnitMonitor ID="Microsoft.Windows.Server.10.0.Processor.PercentInterruptTime" Accessibility="Public" Enabled="false" Target="ServervNext!Microsoft.Windows.Server.10.0.Processor" ParentMonitorID="Microsoft.Windows.Server.10.0.Processor.PerformanceRollup" Remotable="true" Priority="Normal" TypeID="Microsoft.Windows.Server.10.0.Processor.Monitortype" ConfirmDelivery="false">
<Category>PerformanceHealth</Category>
<OperationalStates>
<OperationalState ID="OverThreshold" MonitorTypeStateID="OverThreshold" HealthState="Error"/>
<OperationalState ID="UnderThreshold" MonitorTypeStateID="UnderThreshold" HealthState="Success"/>
</OperationalStates>
<Configuration>
<CounterName>% Interrupt Time</CounterName>
<ObjectName>Processor</ObjectName>
<InstanceName>$Target/Property[Type="WindowsServer!Microsoft.Windows.Server.Processor"]/PerfmonInstance$</InstanceName>
<Frequency>120</Frequency>
<Threshold>10</Threshold>
<NumSamples>5</NumSamples>
<TimeoutSeconds>300</TimeoutSeconds>
</Configuration>
</UnitMonitor>