Collect .NET Apps/\% Exception Events/sec

Microsoft.SystemCenter.Apm.ApplicationInstance.ExceptionRateMonitor (UnitMonitor)

Collect .NET Apps/\% Exception Events/sec performance counter

Knowledge Base article:

Summary

The instance state becomes unhealthy if the rate of exception events per defined time period exceeds the monitor threshold.

Causes

Application exception alerts are generated when the rate of exception events exceeds the configured monitor threshold.

The counter is incremented when an unhandled exception occurs.

Resolutions

To resolve these exceptions, check the exception type and the function from which the exception was thrown. Resolution of these types of problems typically requires access to application source code.

Element properties:

Target

Microsoft.SystemCenter.Apm.ApplicationInstance

Parent Monitor

System.Health.AvailabilityState

Category

Custom

Enabled

False

Instance Name

.NET Apps

Counter Name

\% Exception Events/sec

Alert Generate

True

Alert Severity

MatchMonitorHealth

Alert Priority

Normal

Alert Auto Resolve

True

Monitor Type

System.Performance.ConsecutiveSamplesThreshold

Remotable

False

Accessibility

Public

Alert Message

.NET Apps/\% Exception Events/sec exceeded the threshold

The .NET Apps/\% Exception Events/sec performance counter has exceeded the configured threshold of {0}\%. The performance counter value was {1}\%.

RunAs

Default

Source Code:

<UnitMonitor ID="Microsoft.SystemCenter.Apm.ApplicationInstance.ExceptionRateMonitor" Accessibility="Public" Enabled="false" Target="Microsoft.SystemCenter.Apm.ApplicationInstance" ParentMonitorID="Health!System.Health.AvailabilityState" Remotable="false" Priority="Normal" TypeID="Performance!System.Performance.ConsecutiveSamplesThreshold" ConfirmDelivery="false">

  <Category>Custom</Category>

  <AlertSettings AlertMessage="Microsoft.SystemCenter.Apm.ApplicationInstance.ExceptionRateMonitor.AlertMessage">

    <AlertOnState>Warning</AlertOnState>

    <AutoResolve>true</AutoResolve>

    <AlertPriority>Normal</AlertPriority>

    <AlertSeverity>MatchMonitorHealth</AlertSeverity>

    <AlertParameters>

      <AlertParameter1>$Target/Property[Type="Microsoft.SystemCenter.Apm.ApplicationInstanceBase"]/ExceptionRateMonitorThreshold$</AlertParameter1>

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

    </AlertParameters>

  </AlertSettings>

  <OperationalStates>

    <OperationalState ID="Success" MonitorTypeStateID="ConditionFalse" HealthState="Success"/>

    <OperationalState ID="Warning" MonitorTypeStateID="ConditionTrue" HealthState="Warning"/>

  </OperationalStates>

  <Configuration>

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

    <CounterName>% Exception Events/sec</CounterName>

    <ObjectName>.NET Apps</ObjectName>

    <InstanceName>$Target/Property[Type="Microsoft.SystemCenter.Apm.ApplicationInstance"]/CounterInstance$</InstanceName>

    <AllInstances>false</AllInstances>

    <Frequency>$Target/Property[Type="Microsoft.SystemCenter.Apm.ApplicationInstanceBase"]/ExceptionRateMonitorInterval$</Frequency>

    <Threshold>$Target/Property[Type="Microsoft.SystemCenter.Apm.ApplicationInstanceBase"]/ExceptionRateMonitorThreshold$</Threshold>

    <Direction>greater</Direction>

    <NumSamples>3</NumSamples>

  </Configuration>

</UnitMonitor>