PowerShell 複製 $Message = "Output:" 1..8 | ForEach-Object -Parallel { "$Using:Message $_" Start-Sleep 1 } -ThrottleLimit 4 Output: 1 Output: 2 Output: 3 Output: 4 Output: 5 Output: 6 Output: 7 Output: 8 ThrottleLimit 參數值設定為 4,以便以四個...
$loopMe = [System.Collections.ArrayList]@() for($index = 0; $index -lt 5; $index++){ $loopMe.Add($index)>$null; } $global:numberOverLimit=$false $addToMe= [System.Collections.Concurrent.ConcurrentBag[psobject]]::new() $loopMe | Foreach-Object -ThrottleLimit 6 -Parallel{ $localAdd...
使用 -Parallel 参数比不用要快 10 秒钟左右。 ForEach-Object 是以创建新线程的方式并行执行脚本块(<ScriptBlock>)。由于创建新线程需要开销,所以使用 -Parallel 是否就一定比比用要快,要看脚本块的具体情况。如果脚本块的执行时间比较长,使用 -Parallel 还是有效果的。
Parallel processing executes multiple operations simultaneously. In PowerShell, this is achieved withForeach-Object -Parallel. It processes pipeline items concurrently rather than sequentially. Each iteration runs in a separate PowerShell runspace. This is ideal for CPU-bound or I/O-bound operations. ...
PowerShell 1..2|ForEach-Object-Begin$null-Process{'one'}, {'two'}, {'three'}-End$nullone two three one two three 示例11:并行批处理运行慢脚本 此示例运行一个脚本块,该脚本块计算字符串并休眠一秒钟。 PowerShell $Message="Output:"1..8|ForEach-Object-Parallel{"$using:Message$_"Start...
PowerShell 7.0 Preview 3 is now available with a new ForEach-Object Parallel Experimental feature. This feature is a great new tool for parallelizing work, but like any tool, it has its uses and drawbacks. This article describes this new feature, how it works, when to use it and when ...
在PowerShell中,ForEach-Object 是一个用于对集合中的每个对象执行指定操作的 cmdlet。通常,当你完成 ForEach-Object 块中的操作后,它会自然结束,并且控制权会返回到脚本或命令行的下一部分。然而,有时你可能想要提前退出循环,这可以通过使用 break 关键字来实现。 基础概念 ForEach-Object 的基本语法如下: 代码语...
线程将要退出的时候，写控制变量running = false，判断running这个变量就可以知道线程是否在执行了。 这个...
https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.core/foreach-object?view=powershell-7.2 "Parallel running script block. Beginning with PowerShell 7.0, a third parameter set is available that runs each script block in parallel. The ThrottleLimit parameter limits the ...
Invoke-Command -ComputerName $ComputerName -AsJob -JobName $Database -ScriptBlock ${Function:Start-UpdateStatistics} ` -ArgumentList $SqlServer ,$Database How can i get this to work in a Foreach-Object parallel ? Windows Server PowerShell Windows Server PowerShell Windows Server: A family...