How can I speed up PowerShell cmdlets that are using the -CimSession parameter?

Question

As the title says, how could someone speed up the execution of this tiny script? Am I using the New-CimSession that right way anyway?

$computers = Get-ADComputer -SearchBase "OU=W2012,OU=Servers,DC=contoso,DC=com" -Filter *

foreach ($computer in $computers) 
{
    Get-ScheduledTask -TaskName "SomeTask" -CimSession (New-CimSession -ComputerName $computer.Name) 
}

Would using `-SkipTestConnection` improve speed by a lot? – Micky Balladelli Dec 11 '14 at 10:52 — Micky Balladelli, Dec 11 '14 at 10:52

score 1 · Answer 1 · answered Dec 17 '14 at 16:36

Look into using background jobs for the Get-ScheduledTask cmdlet. This will run the command asynchronously.

foreach ($computer in $computers) {
    start-job -scriptblock {
        #Parse Args
        $CompName = $args[0]
        $TaskName = $args[1]

        Get-ScheduledTask -TaskName $TaskName -CimSession (New-CimSession -ComputerName $CompName)
    } -name( "SchedTask_$($computer)" ) -ArgumentList $computer, "Task Name"
}

After which you need to wait until your jobs are in a "Completed" state and then use Receive-Job to get the output. Geek School: Learn How to Use Jobs in PowerShell

score -1 · Answer 2 · edited Jan 29 '15 at 15:37

-1

Just do:

$computers = Get-ADComputer -SearchBase "OU=W2012,OU=Servers,DC=contoso,DC=com" -Filter *
$sessions = New-CimSession -ComputerName $computers.Name

Get-ScheduledTask -TaskName "SomeTask" -CimSession $sessions

edited Jan 29 '15 at 15:37

HopelessN00b

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answered Jan 29 '15 at 14:58

Anders Andersson

1

It's often helpful to explain your answer so people know what it's doing and why it's the right way to do it. – Drew Khoury Jan 29 '15 at 22:30

How can I speed up PowerShell cmdlets that are using the -CimSession parameter?

2 Answers2