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JVM total loaded class count change rate

Microsoft.JEE.ApplicationServer.PerformanceData.TotalLoadedClassCountDelta (Rule)

The change in the number of Java classes that have been loaded by the Java Virtual Machine since it was started.

Knowledge Base article:

Summary

The TotalLoadedClassCountDelta rule collects performance data from the Java Virtual Machine using a Stats call to a servlet using the /Stats query.

The change in the number of Java classes that have been loaded by the Java Virtual Machine since the previous /Stats query.

The performance data is written to both the System Database and the Data Warehouse.

Element properties:

TargetMicrosoft.JEE.ApplicationServer.Monitored.Instance
CategoryPerformanceCollection
EnabledTrue
Alert GenerateFalse
RemotableTrue

Member Modules:

ID Module Type TypeId RunAs 
DS DataSource Microsoft.JEE.Monitoring.UrlProbe.Stats.DataSource Default
PerfMapper ConditionDetection Microsoft.JEE.DeltaMapper Default
WriteToDB WriteAction Microsoft.SystemCenter.CollectPerformanceData Default
WriteToDW WriteAction Microsoft.SystemCenter.DataWarehouse.PublishPerformanceData Default

Source Code:

<Rule ID="Microsoft.JEE.ApplicationServer.PerformanceData.TotalLoadedClassCountDelta" Target="Microsoft.JEE.ApplicationServer.Monitored.Instance" Enabled="true" Remotable="true">

  <Category>PerformanceCollection</Category>

  <DataSources>

    <DataSource ID="DS" TypeID="Microsoft.JEE.Monitoring.UrlProbe.Stats.DataSource">

      <ComputerName>$Target/Property[Type="Microsoft.JEE.ApplicationServer.Monitored.Instance"]/HostName$</ComputerName>

      <Protocol>$Target/Property[Type="Microsoft.JEE.ApplicationServer.Monitored.Instance"]/Protocol$</Protocol>

      <Port>$Target/Property[Type="Microsoft.JEE.ApplicationServer.Monitored.Instance"]/Port$</Port>

      <BaseURL/>

      <URLSuffix/>

      <IntervalSeconds>900</IntervalSeconds>

      <TimeoutSeconds>300</TimeoutSeconds>

    </DataSource>

  </DataSources>

  <ConditionDetection TypeID="Microsoft.JEE.DeltaMapper" ID="PerfMapper">

    <ObjectName>Class Loader</ObjectName>

    <CounterName>JVM Total Loaded Class Count Change Rate</CounterName>

    <InstanceName/>

    <Value>$Data/Stats/ClassLoader/Properties/TotalLoadedClassCount$</Value>

    <NumSamples>1</NumSamples>

    <Absolute>true</Absolute>

  </ConditionDetection>

  <WriteActions>

    <WriteAction ID="WriteToDB" TypeID="SC!Microsoft.SystemCenter.CollectPerformanceData"/>

    <WriteAction ID="WriteToDW" TypeID="SCDW!Microsoft.SystemCenter.DataWarehouse.PublishPerformanceData"/>

  </WriteActions>

</Rule>