Home
  •  

MSSQL 2014: Active File Pairs

Microsoft.SQLServer.2014.CollectionRule.DBFileGroupFx.ActiveFilePairs (Rule)

Collects the number of Active Checkpoint File Pairs in In-Memory file group.

Knowledge Base article:

Summary

The rule collects the number of Active Checkpoint File Pairs in In-Memory file group.

Active CFPs contain the inserted/deleted rows from previous closed checkpoints. These CFPs contain all inserted/deleted rows required for applying the active part of the transaction log at the database restart. It is expected that the size of these CFPs is approximately 2x of the in-memory size of memory-optimized tables assuming merge operation is keeping up with the transactional workload.

Overrideable Parameters

Name

Description

Default Value

Enabled

 

Yes

Generates Alerts

 

No

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.2014.DBFileGroupFx
CategoryPerformanceCollection
EnabledTrue
Alert GenerateFalse
RemotableTrue

Member Modules:

ID Module Type TypeId RunAs 
DS DataSource Microsoft.SQLServer.2014.DataSource.DBFileGroupFx.ActiveAndNonActiveFilesPerf Default
WriteToDB WriteAction Microsoft.SystemCenter.CollectPerformanceData Default
WriteToDW WriteAction Microsoft.SystemCenter.DataWarehouse.PublishPerformanceData Default

Source Code:

<Rule ID="Microsoft.SQLServer.2014.CollectionRule.DBFileGroupFx.ActiveFilePairs" Target="SQL2014Core!Microsoft.SQLServer.2014.DBFileGroupFx" Enabled="true">

  <Category>PerformanceCollection</Category>

  <DataSources>

    <DataSource ID="DS" TypeID="Microsoft.SQLServer.2014.DataSource.DBFileGroupFx.ActiveAndNonActiveFilesPerf">

      <IntervalSeconds>900</IntervalSeconds>

      <SyncTime/>

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

      <SqlInstanceName>$Target/Host/Host/Property[Type="SQL2014Core!Microsoft.SQLServer.2014.ServerRole"]/InstanceName$</SqlInstanceName>

      <ObjectName>In-Memory OLTP File Group</ObjectName>

      <CounterName>File Group Active Pairs</CounterName>

      <InstanceName/>

      <DatabaseName>$Target/Host/Property[Type="SQL2014Core!Microsoft.SQLServer.2014.Database"]/DatabaseName$</DatabaseName>

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

      <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>