Universal Linux Operating System Total Percent Interrupt Time Monitor
The total percentage of interrupt time (for all processors) is high. System performance may be adversely affected.
Total interrupt time is the time that all processors spent receiving and servicing hardware interrupts. This value is an indirect indicator of the activity of devices that generate interrupts, such as the system clock, the mouse, storage controllers, 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. Normal thread execution is suspended during interrupts.
The monitor threshold is analyzed against an average of values returned in polls to the agent, where the Number of Samples parameter controls the number of samples included in the calculation of the average. The value returned by the agent is the rolling average of the 5 most recent values queried at 1 minute intervals.
Default Configuration
Parameter | Default Value |
Threshold | 10 |
Interval (seconds) | 300 |
Number of Samples | 3 |
Overrides can be used to change the parameter values defined above for all instances or for specific instances or groups.
A high interrupt time condition most often indicates that there is a problem with a hardware device.
System log files should be checked to identify device errors.
Target | Microsoft.Linux.Universal.OperatingSystem | ||
Parent Monitor | System.Health.PerformanceState | ||
Category | PerformanceHealth | ||
Enabled | True | ||
Alert Generate | True | ||
Alert Severity | Error | ||
Alert Priority | Normal | ||
Alert Auto Resolve | True | ||
Monitor Type | Microsoft.Unix.WSMan.Performance.Filtered.Average.Threshold.MonitorType | ||
Remotable | True | ||
Accessibility | Public | ||
Alert Message |
| ||
RunAs | Default |
<UnitMonitor ID="Microsoft.Linux.Universal.OperatingSystem.TotalPercentInterruptTime.Monitor" Accessibility="Public" Target="Universal!Microsoft.Linux.Universal.OperatingSystem" TypeID="Unix!Microsoft.Unix.WSMan.Performance.Filtered.Average.Threshold.MonitorType" Enabled="true" ParentMonitorID="SystemHealth!System.Health.PerformanceState">
<Category>PerformanceHealth</Category>
<AlertSettings AlertMessage="Microsoft.Linux.Universal.OperatingSystem.TotalPercentInterruptTime.AlertMessage">
<AlertOnState>Error</AlertOnState>
<AutoResolve>true</AutoResolve>
<AlertPriority>Normal</AlertPriority>
<AlertSeverity>Error</AlertSeverity>
<AlertParameters>
<AlertParameter1>$Data/Context/Value$</AlertParameter1>
</AlertParameters>
</AlertSettings>
<OperationalStates>
<OperationalState HealthState="Success" MonitorTypeStateID="UnderThreshold" ID="UnderThreshold"/>
<OperationalState HealthState="Error" MonitorTypeStateID="OverThreshold" ID="OverThreshold"/>
</OperationalStates>
<Configuration>
<TargetSystem>$Target/Host/Property[Type="Unix!Microsoft.Unix.Computer"]/NetworkName$</TargetSystem>
<Uri>http://schemas.microsoft.com/wbem/wscim/1/cim-schema/2/SCX_ProcessorStatisticalInformation?__cimnamespace=root/scx</Uri>
<Filter/>
<SplitItems>true</SplitItems>
<Interval>300</Interval>
<ObjectName>Processor</ObjectName>
<CounterName>% Interrupt Time</CounterName>
<InstanceName>_Total</InstanceName>
<InstanceProperty>/DataItem/WsManData/*[local-name(.)='SCX_ProcessorStatisticalInformation']/*[local-name(.)='Name']</InstanceProperty>
<Value>$Data/WsManData/*[local-name(.)='SCX_ProcessorStatisticalInformation']/*[local-name(.)='PercentInterruptTime']$</Value>
<Threshold>10</Threshold>
<NumSamples>3</NumSamples>
</Configuration>
</UnitMonitor>