CPU Percentage Interrupt Time (Windows Server 2008 R2) Monitor

  • ID:  Microsoft.Windows.Server.2008.R2.Processor.PercentInterruptTime
  • Description:  Monitors the CPU Percentage Interrupt Time in Windows Server 2008 R2 Operating System.
  • Target:  Windows Server 2008 Processor
  • Enabled:  No

Operational States

Name State Description
Interrupt Time Critical Error Interrupt Time Critical
Interrupt Time OK Success Interrupt Time OK

Overridable Parameters

Parameter Name Default Value Description Override
Frequency 120  
Threshold 10  

Run As Profiles

Name
Default

Monitor Knowledgebase

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.

This monitor is only valid for Windows Server 2008 R2 Operating System.

Causes

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

Resolutions

To view recent Processor\% 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.

External References
This monitor does not contain any external references.

See Also for Windows Server Network Load Balancing Management Pack


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