如何在运行空间池中多次使用相同的Exchange会话状态信息？

我试图创建一个多线程脚本完全为速度的好处，我写的同步版本的作品，但速度慢。因为每个线程正在导入Exchange会话信息，所以我遇到了一堵墙，它与同步代码一样慢或慢，特别是随着服务器数量的增加。如何在运行空间池中多次使用相同的Exchange会话状态信息？

我确定有更好的方法，我相信这样做的正确方法是将pssession加载一次并将其附加到运行空间池，但在我的搜索中找不到如何运行的示例与Exchange做到这一点？

下面是我的异步与同步比较。异步代码的运行时间是12:41，同步代码的时间是15:02。

cls 
$stopWatch = [System.Diagnostics.Stopwatch]::StartNew(); 
[DateTime]::Now.ToString(); 




    # Fill in these two values 
$connectionUri = "http://[something]/powershell"; 
$servers = @("server1","server2","server3","server4","server5","server6","server7","server8","server9","server10","server11","server12"); 
    # /fill 




# asynchronous 
Write-Host "Asynchronous"; 

# Create session state 

$myString = "this is session state!"; 
$sessionState = [System.Management.Automation.Runspaces.InitialSessionState]::CreateDefault(); 
$sessionstate.Variables.Add((New-Object -TypeName System.Management.Automation.Runspaces.SessionStateVariableEntry -ArgumentList "myString" ,$myString, "example string")); 

# Create runspace pool consisting of $numThreads runspaces 
$minimumAmountOfThreads = 1; 
$maximumAmountOfThreads= 15; 
$RunspacePool = [RunspaceFactory]::CreateRunspacePool($minimumAmountOfThreads, $maximumAmountOfThreads, $sessionState, $Host); 
$RunspacePool.Open(); 


$threads = @(); 
$Jobs = @(); 
$asynchronousThreadCount = 0; 
[int]$index = 0; 
foreach ($server in $servers) 
{ 
    $scriptBlock = "import-pssession (new-pssession -ConfigurationName Microsoft.Exchange -ConnectionUri $connectionUri) -AllowClobber; `$returnValue = @(); `$returnValue += Get-ExchangeServer -Identity $server; `$returnValue += Get-MailboxDatabase -Server $server; `$returnValue += Get-MailboxDatabase -Server $server -status; return `$returnValue;"; # working 

    $asynchronousThreadCount ++; 
    $runspaceObject = [PSCustomObject] @{ 
     Runspace = [PowerShell]::Create() 
     Invoker = $null 
    } 
    $runspaceObject.Runspace.RunSpacePool = $runspacePool; 
    $runspaceObject.Runspace.AddScript($scriptBlock) | Out-Null; 
    $runspaceObject.Runspace.AddArgument($server) | Out-Null; 
    $runspaceObject.Invoker = $runspaceObject.Runspace.BeginInvoke(); 
    $threads += $runspaceObject; 
    $elapsed = $StopWatch.Elapsed; 

    Write-Host "Asynchronous created thread $asynchronousThreadCount " $elapsed; 
    $index++; 
} 

Write-Host $threads.Count; 
Write-Host ""; 
Write-Host "Waiting.." -NoNewline; 
Do { 
    Write-Host "." -NoNewline; 
    Start-Sleep -Seconds 1; 
} While ($runspaceObject.Invoker.IsCompleted -contains $false); 

$resultsAsynchronous = @(); 

foreach ($tr in $threads) 
{ 
    $resultsAsynchronous += $tr.Runspace.EndInvoke($tr.Invoker); 
    $tr.Runspace.Dispose(); 
} 

$runspacePool.Close(); 
$runspacePool.Dispose();  

$elapsed = $StopWatch.Elapsed; 
Write-Host ""; 
Write-Host "Multithread elapsed time: $elapsed"; 
Write-Host "Asynchronous return value count " $resultsAsynchronous.Count; 

Write-Host ""; 
Write-Host ""; 
Write-Host ""; 







# synchronous 
Write-Host "Synchronous"; 

$StopWatch.Reset | Out-Null; 
import-pssession (new-pssession -ConfigurationName Microsoft.Exchange -ConnectionUri $connectionUri) -AllowClobber; 
$resultsSynchronous = @(); 
foreach ($server in $servers) 
{ 
    $resultsSynchronous += Get-ExchangeServer -Identity $server; 
    $resultsSynchronous += Get-MailboxDatabase -Server $server; 
    $resultsSynchronous += Get-MailboxDatabase -Server $server -status; 
} 

$elapsed = $StopWatch.Elapsed; 
Write-Host ""; 
Write-Host "Single thread elapsed time: $elapsed"; 
Write-Host "Synchronous return value count " $resultsSynchronous.Count;

来源

2017-07-19 Jay

您是否尝试过使用'-AsJob'开关的同步方法？你可以使用'Get-Job'来监视任务。因为这些命令被导入，它们会变得很慢。有许多方法可以将对象和变量导入到运行空间中，但正如您所知道的那样，运行空间的运行非常迅速。如果你打算使用运行空间，@boeprox在他的博客中有一个[你的方法]（https://learn-powershell.net/2013/04/19/sharing-variables-and-live-objects-between- powershell-runspaces /），我已经用它作为线程作业的指南多次，尽管不是用导入的pssessions。 – brendan62269

感谢您回复@ brendan62269，在研究了您提供的链接（感谢您）后，如果我理解正确，我相信他的示例是在哈希表中共享返回值。也许我错过了它，但我怎么能与.setVariable命令共享导入的会话？也许用sessionState.Modules.Add（）命令？即使我不相信拥有物被认为是一个模块？ – Jay

也许这不是正确的方式。您是否尝试先解析会话，然后将其用作参数？我在评论中没有足够的空间来举例。所以我会写它作为答案。 – brendan62269

同步的名单是不是真的是我脑子里想的，或者说，只是路过现场会话作为一个参数应该工作。循环之前解决会议：

$importSession = new-pssession -ConfigurationName Microsoft.Exchange -ConnectionUri $connectionUri

做你的foreach，然后添加PARAMS到脚本块和会话的additionak参数导入：

foreach ($server in $servers) 
{ 
    $scriptBlock = { 
     param($importSession, $server) 
     import-pssession $importSession 
     Get-ExchangeServer -Identity $server 
     Get-MailboxDatabase -Server $server 
     Get-MailboxDatabase -Server $server -status 
    } 

    $asynchronousThreadCount++; 
    $runspaceObject = [PSCustomObject] @{ 
     Runspace = [PowerShell]::Create() 
     Invoker = $null 
    } 
    $runspaceObject.Runspace.RunSpacePool = $runspacePool; 
    $runspaceObject.Runspace.AddScript($scriptBlock) | Out-Null; 
    $runspaceObject.Runspace.AddArgument($importSession) | Out-Null; 
    $runspaceObject.Runspace.AddArgument($server) | Out-Null; 
    $runspaceObject.Invoker = $runspaceObject.Runspace.BeginInvoke(); 
    $threads += $runspaceObject; 
    $elapsed = $StopWatch.Elapsed; 

    Write-Host "Asynchronous created thread $asynchronousThreadCount " $elapsed; 
    $index++; 
}

我无法验证会工作，但我认为不必每次都要对http://[something]/powershell进行一次新的调整，这可能会显着减少每个线程的加载时间。

来源

2017-07-24 04:52:09 brendan62269

如何在运行空间池中多次使用相同的Exchange会话状态信息？

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