How to identify ConfigMgr collections that take long to refresh

Sat, 30 Aug 2014 09:54:14 +0000

I’ve put together the below PowerShell script this week to identify collections in ConfigMgr that require the longest time to refresh. If you ever experience a decrease in ConfigMgr collection update performance, you might want to run this script to find potential collections that have a long refresh duration.

Function Get-CMCollectionRefreshDuration
{
<#
.Synopsis
 Get-CMCollectionRefreshDuration displays the duration of Configuration Manager refresh cycles
.DESCRIPTION
 Inefficient queries can cause long collection refresh cycles. Use the Get-CMCollectionRefreshDuration
 cmdlet to identify collections with long refresh cycles. 
.EXAMPLE
 Get-CMCollectionRefreshDuration -DataSource sqlsrv01\instance1 -Database CM_DB1

 Collection EvaluationStartTime LastRefreshTime Duration
 ---------- ------------------- --------------- --------
 Collection1 30.08.2014 09:20:11 30.08.2014 09:22:45 00:02:33
 Collection2 30.08.2014 09:27:31 30.08.2014 09:30:05 00:02:33
 Collection3 30.08.2014 07:01:23 30.08.2014 07:03:56 00:02:33
 Collection4 30.08.2014 07:20:38 30.08.2014 07:23:11 00:02:33
 Collection5 30.08.2014 07:05:00 30.08.2014 07:07:33 00:02:33 

.EXAMPLE
 Get-CMCollectionRefreshDuration -DataSource sqlsrv01\instance1 -Database CM_DB1 -ShowTopCollections 100

 Lists the top 100 collections
.PARAMETER DataSource
 The name of the SQL Server that hosts the configuration manager database

 <servername\instance>

.PARAMETER Database
 The database name of the configuration manager database

.PARAMETER ShowTopCollections
 The number of collections to show that have the longers collection refresh cycle duration

#>
 [CmdletBinding()]
 Param
 (
 [Parameter(Mandatory=$false,
 Position=0,
 HelpMessage="Enter the SQL Server datasource name <server\instance>")]
 [string]$DataSource="server01\instance1",
 [Parameter(Mandatory=$false,
 Position=1,
 HelpMessage="The database name of the ConfigMgr database")]
 [string]$Database="CMDB1",
 [Parameter(Mandatory=$false,
 Position=2,
 HelpMessage="The number of top collectons to show")]
 [ValidateRange(1,10000)]
 [int]$ShowTopCollections="5" 
 )

Begin{
 # connecting to SQL server
 Try{
 $Connection = New-Object System.Data.SqlClient.SqlConnection
 $Connection.ConnectionString = "Data Source=$DataSource;Integrated Security=True"
 $Connection.Open()
 }
 Catch [Exception]
 {
 write-output "Unable to connect to $DataSource"
 Write-Output $_.Exception
 Throw
 }
 $query = "
 SELECT TOP $ShowTopCollections
 [CollectionName],
 [EvaluationStartTime],
 [LastRefreshTime],
 CAST([LastRefreshTime] - [EvaluationStartTime] as datetime) as Duration
 FROM [$Database].[dbo].[Collections]
 ORDER BY CAST([LastRefreshTime] - [EvaluationStartTime] as datetime) DESC"

 $command = $connection.CreateCommand()
 $command.CommandText = $query
 $result = $command.ExecuteReader()

 $table = new-object “System.Data.DataTable”
 $table.Load($result)
 $Connection.Close()
}

Process{
 $colupdateduration = @()
 ForEach($cud in $table)
 {
 $object = New-Object -TypeName PSObject
 $object | Add-Member -MemberType NoteProperty -Name "Collection" -Value $cud.Collectionname
 $object | Add-Member -MemberType NoteProperty -Name "EvaluationStartTime" -Value $cud.EvaluationStartTime
 $object | Add-Member -MemberType NoteProperty -Name "LastRefreshTime" -Value $cud.LastRefreshTime
 $object | Add-Member -MemberType NoteProperty -Name "Duration" -Value ($dur = Get-date $cud.Duration -Format "HH:mm:ss")
 $colupdateduration += $object
 }
}

End{
 $colupdateduration
 }
}

Thanks to Roger Zander and Claude Henchoz for the SQL query to find these collections.

Refresh on Anything About IT

How to identify ConfigMgr collections that take long to refresh