Frequenza Garbage Collection

Microsoft.JEE.PerformanceHealth.GarbageCollectorRateMonitor (UnitMonitor)

Monitoraggio delle prestazioni della frequenza di Garbage Collection di un server applicazioni.

Knowledge Base article:

Riepilogo

Il monitoraggio delle prestazioni per la frequenza della Garbage Collection tiene traccia della frequenza delle Garbage Collection nella Java Virtual Machine associata al server applicazioni.

Cause

Uno stato non integro indica che il Garbage Collector ha superato la soglia monitorata configurata per il server applicazioni.

Risoluzioni

Avviare il server applicazioni con una configurazione di memoria più grande.
Spostare alcune applicazioni distribuite in un altro server applicazioni.

Element properties:

Target

Microsoft.JEE.GarbageCollector

Parent Monitor

System.Health.PerformanceState

Category

PerformanceHealth

Enabled

False

Alert Generate

True

Alert Severity

MatchMonitorHealth

Alert Priority

Normal

Alert Auto Resolve

True

Monitor Type

Microsoft.JEE.ThresholdDeltaUnitMonitor

Remotable

True

Accessibility

Public

Alert Message

Soglia monitoraggio della frequenza del Garbage Collector superata

Il monitoraggio della frequenza del Garbage Collector ha superato la soglia per l'ID del server applicazioni: {0}, nome oggetto: {1}, nome contatore: {2}, nome istanza: {3}

RunAs

Default

Source Code:

<UnitMonitor ID="Microsoft.JEE.PerformanceHealth.GarbageCollectorRateMonitor" Accessibility="Public" Enabled="false" Target="Microsoft.JEE.GarbageCollector" ParentMonitorID="Health!System.Health.PerformanceState" Remotable="true" Priority="Normal" TypeID="Microsoft.JEE.ThresholdDeltaUnitMonitor" ConfirmDelivery="true">

  <Category>PerformanceHealth</Category>

  <AlertSettings AlertMessage="Microsoft.JEE.PerformanceHealth.GarbageCollectorRateMonitor_AlertMessageResourceID">

    <AlertOnState>Warning</AlertOnState>

    <AutoResolve>true</AutoResolve>

    <AlertPriority>Normal</AlertPriority>

    <AlertSeverity>MatchMonitorHealth</AlertSeverity>

    <AlertParameters>

      <!-- The alert description should include key properties of:   -->

      <!-- * the deep monitored application server                   -->

      <!-- * the performance counter object name                     -->

      <!-- * counter name                                            -->

      <!-- * instance name                                           -->

      <AlertParameter1>$Target/Host/Property[Type="Microsoft.JEE.ApplicationServer.Monitored.Instance"]/Id$</AlertParameter1>

      <AlertParameter2>Garbage Collector</AlertParameter2>

      <AlertParameter3>JVM Garbage Collector Collection Count Change Rate</AlertParameter3>

      <AlertParameter4>$Target/Property[Type="Microsoft.JEE.GarbageCollector"]/GarbageCollectorName$</AlertParameter4>

    </AlertParameters>

  </AlertSettings>

  <OperationalStates>

    <OperationalState ID="Microsoft.JEE.PerformanceHealth.GC.Rate.UnderThreshold" MonitorTypeStateID="UnderThreshold" HealthState="Success"/>

    <OperationalState ID="Microsoft.JEE.PerformanceHealth.GC.Rate.OverThreshold" MonitorTypeStateID="OverThreshold" HealthState="Warning"/>

  </OperationalStates>

  <Configuration>

    <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>

    <!-- 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/GCCollectionTime[../GCName = "PS Scavenge"]  -->

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

    <!-- The spec says that a value of 30 GC's per hour is the threshold -->

    <!-- as the monitor runs every 300 seconds (5 mins) an value of 5    -->

    <!-- GC's per interval has been chosen                               -->

    <Threshold>5</Threshold>

    <SampleCount>2</SampleCount>

  </Configuration>

</UnitMonitor>