MSSQL no Windows: latência de leitura de disco do banco de dados

Microsoft.SQLServer.Windows.MonitorType.Database.DBDiskReadLatency (UnitMonitorType)

Este tipo de monitor verifica se a latência de leitura de disco está abaixo do limite ou não.

Element properties:

Show References:
- Unit Monitors (1)

RunAs	Microsoft.SQLServer.Core.RunAs.Monitoring
Accessibility	Internal
Support Monitor Recalculate	False

Member Modules:

ID	Module Type	TypeId	RunAs
DS	DataSource	Microsoft.SQLServer.Windows.DataSource.DBDiskLatencyRawPerfProvider	Default
CDC	ConditionDetection	System.Performance.ConsecutiveSamplesCondition	Default
CDOverThreshold	ConditionDetection	System.ExpressionFilter	Default
CDUnderThreshold	ConditionDetection	System.ExpressionFilter	Default

Overrideable Parameters:

ID	ParameterType	Selector	Display Name	Description
IntervalSeconds	int	$Config/IntervalSeconds$	Intervalo (segundos)	O intervalo de tempo recorrente em segundos no qual executar o fluxo de trabalho.
SyncTime	string	$Config/SyncTime$	Tempo de Sincronização	O tempo de sincronização especificado usando um formato de 24 horas. Pode ser omitido.
NumSamples	int	$Config/NumSamples$	Número de amostras	Indica quantas vezes um valor medido deve romper um limite antes que o estado seja alterado.
Threshold	double	$Config/Threshold$	Limite Crítico	O monitor mudará seu estado para crítico se o valor exceder o esse limite.
TimeoutSeconds	int	$Config/TimeoutSeconds$	Tempo Limite (em segundos)	Especifica o tempo que o fluxo de trabalho pode para ser executado antes de ser fechado e marcado como falha.
SqlExecTimeoutSeconds	int	$Config/SqlExecTimeoutSeconds$
SqlTimeoutSeconds	int	$Config/SqlTimeoutSeconds$

Source Code:

<UnitMonitorType ID="Microsoft.SQLServer.Windows.MonitorType.Database.DBDiskReadLatency" Accessibility="Internal" RunAs="SqlCoreLib!Microsoft.SQLServer.Core.RunAs.Monitoring">

  <MonitorTypeStates>

    <MonitorTypeState ID="OverThreshold"/>

    <MonitorTypeState ID="UnderThreshold"/>

  </MonitorTypeStates>

  <Configuration>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="MachineName" type="xsd:string"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="NetbiosComputerName" type="xsd:string"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="InstanceName" type="xsd:string"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="DatabaseName" type="xsd:string"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="ObjectName" type="xsd:string"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="CounterName" type="xsd:string"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="PerfInstanceName" type="xsd:string"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="ValuePropertyName" type="xsd:string"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="Threshold" type="xsd:double"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="NumSamples" type="xsd:integer"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="ConnectionString" type="xsd:string"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="InstanceVersion" type="xsd:string"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="InstanceEdition" type="xsd:string"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="MonitoringType" type="xsd:string"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="SqlExecTimeoutSeconds" type="xsd:integer"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="SqlTimeoutSeconds" type="xsd:integer"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="TimeoutSeconds" type="xsd:integer"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="IntervalSeconds" type="xsd:integer"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="SyncTime" type="xsd:string"/>

  </Configuration>

  <OverrideableParameters>

    <OverrideableParameter ID="IntervalSeconds" ParameterType="int" Selector="$Config/IntervalSeconds$"/>

    <OverrideableParameter ID="SyncTime" ParameterType="string" Selector="$Config/SyncTime$"/>

    <OverrideableParameter ID="NumSamples" ParameterType="int" Selector="$Config/NumSamples$"/>

    <OverrideableParameter ID="Threshold" ParameterType="double" Selector="$Config/Threshold$"/>

    <OverrideableParameter ID="TimeoutSeconds" ParameterType="int" Selector="$Config/TimeoutSeconds$"/>

    <OverrideableParameter ID="SqlExecTimeoutSeconds" ParameterType="int" Selector="$Config/SqlExecTimeoutSeconds$"/>

    <OverrideableParameter ID="SqlTimeoutSeconds" ParameterType="int" Selector="$Config/SqlTimeoutSeconds$"/>

  </OverrideableParameters>

  <MonitorImplementation>

    <MemberModules>

      <DataSource TypeID="Microsoft.SQLServer.Windows.DataSource.DBDiskLatencyRawPerfProvider" ID="DS">

        <MachineName>$Config/MachineName$</MachineName>

        <NetbiosComputerName>$Config/NetbiosComputerName$</NetbiosComputerName>

        <InstanceName>$Config/InstanceName$</InstanceName>

        <DatabaseName>$Config/DatabaseName$</DatabaseName>

        <ObjectName>$Config/ObjectName$</ObjectName>

        <CounterName>$Config/CounterName$</CounterName>

        <PerfInstanceName>$Config/PerfInstanceName$</PerfInstanceName>

        <ValuePropertyName>$Config/ValuePropertyName$</ValuePropertyName>

        <ConnectionString>$Config/ConnectionString$</ConnectionString>

        <InstanceVersion>$Config/InstanceVersion$</InstanceVersion>

        <InstanceEdition>$Config/InstanceEdition$</InstanceEdition>

        <MonitoringType>$Config/MonitoringType$</MonitoringType>

        <SqlExecTimeoutSeconds>$Config/SqlExecTimeoutSeconds$</SqlExecTimeoutSeconds>

        <SqlTimeoutSeconds>$Config/SqlTimeoutSeconds$</SqlTimeoutSeconds>

        <TimeoutSeconds>$Config/TimeoutSeconds$</TimeoutSeconds>

        <IntervalSeconds>$Config/IntervalSeconds$</IntervalSeconds>

        <SyncTime>$Config/SyncTime$</SyncTime>

      </DataSource>

      <ConditionDetection TypeID="SystemPerf!System.Performance.ConsecutiveSamplesCondition" ID="CDC">

        <Threshold>$Config/Threshold$</Threshold>

        <Direction>greater</Direction>

      </ConditionDetection>

      <ConditionDetection ID="CDOverThreshold" TypeID="System!System.ExpressionFilter">

        <Expression>

          <SimpleExpression>

            <ValueExpression>

              <XPathQuery Type="Double">Value</XPathQuery>

            </ValueExpression>

            <Operator>GreaterEqual</Operator>

            <ValueExpression>

              <Value Type="Double">$Config/NumSamples$</Value>

            </ValueExpression>

          </SimpleExpression>

        </Expression>

      </ConditionDetection>

      <ConditionDetection ID="CDUnderThreshold" TypeID="System!System.ExpressionFilter">

        <Expression>

          <SimpleExpression>

            <ValueExpression>

              <XPathQuery Type="Double">Value</XPathQuery>

            </ValueExpression>

            <Operator>Less</Operator>

            <ValueExpression>

              <Value Type="Double">$Config/NumSamples$</Value>

            </ValueExpression>

          </SimpleExpression>

        </Expression>

      </ConditionDetection>

    </MemberModules>

    <RegularDetections>

      <RegularDetection MonitorTypeStateID="OverThreshold">

        <Node ID="CDOverThreshold">

          <Node ID="CDC">

            <Node ID="DS"/>

          </Node>

        </Node>

      </RegularDetection>

      <RegularDetection MonitorTypeStateID="UnderThreshold">

        <Node ID="CDUnderThreshold">

          <Node ID="CDC">

            <Node ID="DS"/>

          </Node>

        </Node>

      </RegularDetection>

    </RegularDetections>

  </MonitorImplementation>

</UnitMonitorType>