MSSQL 2014: DB Engine Thread Count monitor type

Microsoft.SQLServer.2014.DBEngine.ThreadCount.MonitorType (UnitMonitorType)

DB Engine Thread Count monitor type for 2014 Databases.

Element properties:

Show References:
- Unit Monitors (1)

RunAs	Microsoft.SQLServer.2014.SQLProbeAccount
Accessibility	Internal
Support Monitor Recalculate	False

Member Modules:

ID	Module Type	TypeId	RunAs
DS	DataSource	Microsoft.SQLServer.2014.DBEngine.ThreadCountMonitor.DataSourceMapped	Default
CSC	ConditionDetection	System.Performance.ConsecutiveSamplesCondition	Default
ErrorCondition	ConditionDetection	System.ExpressionFilter	Default
NormalCondition	ConditionDetection	System.ExpressionFilter	Default

Overrideable Parameters:

ID	ParameterType	Selector	Display Name	Description
IntervalSeconds	int	$Config/IntervalSeconds$	Interval (seconds)	The recurring interval of time in seconds in which to run the workflow.
TimeoutSeconds	int	$Config/TimeoutSeconds$	Timeout (seconds)	Specifies the time the workflow is allowed to run before being closed and marked as failed.
MinFreeThreadsCount	int	$Config/MinFreeThreadsCount$	Minimum Free Threads Threshold	The workflow determines the maximum number of threads and the number of active threads for each DB Engine process. An alert will be generated if the number of free threads is less or equal than this parameter.
NumSamples	int	$Config/NumSamples$	Number of samples	Indicates how many times a measured value should breach a threshold before the state is changed.
SyncTime	string	$Config/SyncTime$	Synchronization Time	The synchronization time specified by using a 24-hour format. May be omitted.
CacheExpirationTime	int	$Config/CacheExpirationTime$	Cache Expiration Time	Specifies the maximum age of information from cache the workflow can use. May be omitted.

Source Code:

<UnitMonitorType ID="Microsoft.SQLServer.2014.DBEngine.ThreadCount.MonitorType" Accessibility="Internal" RunAs="SQL2014Core!Microsoft.SQLServer.2014.SQLProbeAccount">

  <MonitorTypeStates>

    <MonitorTypeState ID="Normal"/>

    <MonitorTypeState ID="Error"/>

  </MonitorTypeStates>

  <Configuration>

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

    <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="TimeoutSeconds" type="xsd:integer"/>

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

    <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="SyncTime" type="xsd:string"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" minOccurs="0" name="CacheExpirationTime" type="xsd:int"/>

  </Configuration>

  <OverrideableParameters>

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

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

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

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

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

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

  </OverrideableParameters>

  <MonitorImplementation>

    <MemberModules>

      <DataSource ID="DS" TypeID="Microsoft.SQLServer.2014.DBEngine.ThreadCountMonitor.DataSourceMapped">

        <ServiceName>$Config/ServiceName$</ServiceName>

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

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

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

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

        <CacheExpirationTime>$Config/CacheExpirationTime$</CacheExpirationTime>

      </DataSource>

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

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

        <Direction>lessequal</Direction>

      </ConditionDetection>

      <ConditionDetection ID="NormalCondition" 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>

      <ConditionDetection ID="ErrorCondition" 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>

    </MemberModules>

    <RegularDetections>

      <RegularDetection MonitorTypeStateID="Normal">

        <Node ID="NormalCondition">

          <Node ID="CSC">

            <Node ID="DS"/>

          </Node>

        </Node>

      </RegularDetection>

      <RegularDetection MonitorTypeStateID="Error">

        <Node ID="ErrorCondition">

          <Node ID="CSC">

            <Node ID="DS"/>

          </Node>

        </Node>

      </RegularDetection>

    </RegularDetections>

  </MonitorImplementation>

</UnitMonitorType>