下面例子使用Powershell線程運(yùn)行了兩個(gè)后臺(tái)任務(wù)和一個(gè)前臺(tái)任務(wù)，創(chuàng)建幾個(gè)運(yùn)行時(shí)間長點(diǎn)的任務(wù)，并且每個(gè)任務(wù)命令中添加使用Start-Sleep。

代碼如下:
$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

相繼執(zhí)行這3個(gè)任務(wù)從Start-Sleep中看至少需要花費(fèi)12秒。但是這個(gè)腳本僅執(zhí)行了5秒多一點(diǎn)。其結(jié)果保存為$result1, $result2和$result3。與后臺(tái)作業(yè)對(duì)比，它在返回大數(shù)據(jù)用時(shí)將差不多。

文章出處：http://www.pstips.net/