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JVM 垃圾回收器回收计数更改率

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

Java 虚拟机示例之间的指定垃圾回收器的垃圾回收次数变化。

Knowledge Base article:

摘要

GCCollectionCountDelta 规则通过对使用 /Stats 查询的 servlet 进行 Stats 调用从 Java 虚拟机中收集性能数据，然后该规则计算当前的抽样值与以前的抽样值之间的差异。

Java 虚拟机示例之间的垃圾回收次数变化。

性能数据将写入系统数据库和数据仓库。

Element properties:

TargetMicrosoft.JEE.GarbageCollector
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.GCCollectionCountDelta" Target="Microsoft.JEE.GarbageCollector" Enabled="true" Remotable="true">

  <Category>PerformanceCollection</Category>

  <DataSources>

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

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

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

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

      <BaseURL/>

      <URLSuffix/>

      <IntervalSeconds>900</IntervalSeconds>

      <TimeoutSeconds>300</TimeoutSeconds>

    </DataSource>

  </DataSources>

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

    <ObjectName>Garbage Collector</ObjectName>

    <CounterName>JVM Garbage Collector Collection Count Change Rate</CounterName>

    <InstanceName>$Target/Property[Type="Microsoft.JEE.GarbageCollector"]/GarbageCollectorName$</InstanceName>

    <!-- Need to find the GCCollectionCount that has a sibling element     -->

    <!-- called GCName with a value of (for example) "PS Scavenge"         -->

    <!-- XPath should look like:                                           -->

    <!-- /Stats/GC/Properties/GCCollectionCount[../GCName = "PS Scavenge"] -->

    <Value>$Data/Stats/GC/Properties/GCCollectionCount[../GCName = "$Target/Property[Type="Microsoft.JEE.GarbageCollector"]/GarbageCollectorName$"]$</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>