MSSQL on Linux: Number of queries waiting for memory grants in the resource pool.

Microsoft.SQLServer.Linux.CollectionRule.ResourcePool.PendingMemoryGrantsCount (Rule)

Collects the Linux "Pending memory grants count" performance counter for each resource pool of SQL DB Engine.

Knowledge Base article:

Summary

The rule collects the Linux "Pending memory grants count" performance counter for each resource pool of SQL DB Engine.

Please refer to the description of sys.dm_exec_query_resource_semaphores for more details.

Overridable Parameters

Name	Description	Default Value
Enabled	Enables or disables the workflow.	Yes
Interval (seconds)	The recurring interval of time in seconds in which to run the workflow.	900
Timeout (seconds)	Specifies the time the workflow is allowed to run before being closed and marked as failed.	300
Timeout for query execution (seconds)	The workflow will fail and register an event, if the query execution takes longer than the specified period.	60
Timeout for database connection (seconds)	The workflow will fail and register an event, if it cannot access the database during the specified period.	15

Element properties:

Target	Microsoft.SQLServer.Linux.ResourcePool
Category	PerformanceCollection
Enabled	True
Alert Generate	False
Remotable	True

Member Modules:

ID	Module Type	TypeId	RunAs
DS	DataSource	Microsoft.SQLServer.Linux.DataSource.SqlOsPerformanceReader	Default
Mapper	ConditionDetection	System.Performance.DataGenericMapper	Default
WriteToDB	WriteAction	Microsoft.SystemCenter.CollectPerformanceData	Default
WriteToDW	WriteAction	Microsoft.SystemCenter.DataWarehouse.PublishPerformanceData	Default

Source Code:

<Rule ID="Microsoft.SQLServer.Linux.CollectionRule.ResourcePool.PendingMemoryGrantsCount" Target="SqlDiscL!Microsoft.SQLServer.Linux.ResourcePool" Enabled="true">

  <Category>PerformanceCollection</Category>

  <DataSources>

    <DataSource ID="DS" TypeID="Microsoft.SQLServer.Linux.DataSource.SqlOsPerformanceReader">

      <MachineName>$Target/Host/Host/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/MachineName$</MachineName>

      <NetbiosComputerName>$Target/Host/Host/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/NetbiosComputerName$</NetbiosComputerName>

      <InstanceName>$Target/Host/Host/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/InstanceName$</InstanceName>

      <ConnectionString>$Target/Host/Host/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/ConnectionString$</ConnectionString>

      <InstanceVersion>$Target/Host/Host/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/Version$</InstanceVersion>

      <InstanceEdition>$Target/Host/Host/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/Edition$</InstanceEdition>

      <SqlExecTimeoutSeconds>60</SqlExecTimeoutSeconds>

      <SqlTimeoutSeconds>15</SqlTimeoutSeconds>

      <TimeoutSeconds>300</TimeoutSeconds>

      <IntervalSeconds>900</IntervalSeconds>

      <ObjectName>$Target/Host/Host/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/PerformanceCounterObject$:Resource Pool Stats</ObjectName>

      <PerfInstanceName>$Target/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.ResourcePool"]/Name$</PerfInstanceName>

      <PerfParams>

        <NameOfHandler>SqlOsPerfCounterReader</NameOfHandler>

        <PerformanceCounterObject>$Target/Host/Host/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/PerformanceCounterObject$</PerformanceCounterObject>

        <CounterConfig>

          <CategoryName>Resource Pool Stats</CategoryName>

          <CounterName>Pending memory grants count</CounterName>

          <BaseCounterName/>

          <InstanceSelector>0</InstanceSelector>

          <NeedsPrefix>1</NeedsPrefix>

          <InstanceIndex>0</InstanceIndex>

        </CounterConfig>

      </PerfParams>

    </DataSource>

  </DataSources>

  <ConditionDetection ID="Mapper" TypeID="SystemPerf!System.Performance.DataGenericMapper">

    <ObjectName>SQL Resource Pool:Resource Pool Stats</ObjectName>

    <CounterName>Pending memory grants count</CounterName>

    <InstanceName/>

    <Value>$Data/Property[@Name='CounterValue']$</Value>

  </ConditionDetection>

  <WriteActions>

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

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

  </WriteActions>

</Rule>