$start = Get-Date $task1 = { Start-Sleep -Seconds 4; Get-Service } $task2 = { Start-Sleep -Seconds 5; Get-Service } $task3 = { Start-Sleep -Seconds 3; Get-Service } # run 2 in separate threads, 1 in the foreground $thread1 = [PowerShell]::Create() $job1 = $thread1.AddScript($task1).BeginInvoke() $thread2 = [PowerShell]::Create() $job2 = $thread2.AddScript($task2).BeginInvoke() $result3 = Invoke-Command -ScriptBlock $task3 do { Start-Sleep -Milliseconds 100 } until ($job1.IsCompleted -and $job2.IsCompleted) $result1 = $thread1.EndInvoke($job1) $result2 = $thread2.EndInvoke($job2) $thread1.Runspace.Close() $thread1.Dispose() $thread2.Runspace.Close() $thread2.Dispose() $end = Get-Date Write-Host -ForegroundColor Red ($end - $start).TotalSeconds