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MSSQL 2016: Precreated Checkpoint Files

Microsoft.SQLServer.2016.CollectionRule.DBFileGroupFx.CheckpointFile.Precreated (Rule)

Collects the number of Precreated Checkpoint Files in Memory-Optimized Data Filegroup.

Knowledge Base article:

Summary

The rule collects the number of Precreated Checkpoint Files in Memory-Optimized Data Filegroup.

A number of checkpoint files are pre-allocated to minimize or eliminate any waits to allocate new files as transactions are being executed. These precreated files can vary in size, depending on the estimated needs of the workload, but they contain no data. This is a storage overhead in databases with a MEMORY_OPTIMIZED_DATA Filegroup.

Overrideable 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

Script Delay (milliseconds)

This parameter sets the delay between consecutive T-SQL queries executed by the workflow. This may help to reduce the footprint generated by the workflow in case of large number of target objects. Please advise with Microsoft Support before changing this parameter.

0

Synchronization Time

The synchronization time specified by using a 24-hour format. May be omitted.

 

Timeout (seconds)

Specifies the time the workflow is allowed to run before being closed and marked as failed.

300

Element properties:

TargetMicrosoft.SQLServer.2016.DBFileGroupFx
CategoryPerformanceCollection
EnabledTrue
Alert GenerateFalse
RemotableTrue

Member Modules:

ID Module Type TypeId RunAs 
DS DataSource Microsoft.SQLServer.2016.DataSource.DBFileGroupFx.ActiveAndNonActiveFilesPerf Default
WriteToDB WriteAction Microsoft.SystemCenter.CollectPerformanceData Default
WriteToDW WriteAction Microsoft.SystemCenter.DataWarehouse.PublishPerformanceData Default

Source Code:

<Rule ID="Microsoft.SQLServer.2016.CollectionRule.DBFileGroupFx.CheckpointFile.Precreated" Target="SQL2016Core!Microsoft.SQLServer.2016.DBFileGroupFx" Enabled="true">

  <Category>PerformanceCollection</Category>

  <DataSources>

    <DataSource ID="DS" TypeID="Microsoft.SQLServer.2016.DataSource.DBFileGroupFx.ActiveAndNonActiveFilesPerf">

      <IntervalSeconds>900</IntervalSeconds>

      <SyncTime/>

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

      <SqlInstanceName>$Target/Host/Host/Property[Type="SQL2016Core!Microsoft.SQLServer.2016.ServerRole"]/InstanceName$</SqlInstanceName>

      <ObjectName>Memory-Optimized Filegroup</ObjectName>

      <CounterName>Checkpoint Precreated Files</CounterName>

      <InstanceName/>

      <DatabaseName>$Target/Host/Property[Type="SQL2016Core!Microsoft.SQLServer.2016.Database"]/DatabaseName$</DatabaseName>

      <State>0</State>

      <TimeoutSeconds>300</TimeoutSeconds>

      <ScriptDelayMsec>0</ScriptDelayMsec>

    </DataSource>

  </DataSources>

  <WriteActions>

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

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

  </WriteActions>

</Rule>