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Windows Server 2012（虚拟机）中的IIS 8上的MVC 5应用程序非常慢（不仅在初始加载时）

[英]MVC 5 application on IIS 8 in Windows Server 2012 (virtual machine) is very slow (not only on initial load)

原文 2016-02-13 12:30:46 0 1 c#/ asp.net/ asp.net-mvc-5/ iis-8

The goal is to launch an MVC 5 web app on an IIS 8 within a Windows Server 2012 (Standard edition for evaluation from Microsoft) in a virtual machine (VMware Workstation 12 Player, free version) in order to test the whole system for the release. 目标是在虚拟机 （VMware Workstation 12 Player，免费版）中的Windows Server 2012 （Microsoft评估标准版）中的IIS 8上启动MVC 5 Web应用程序，以测试整个系统的发行版。

I managed to run the application, but the problem is, that it´s extremely slow. 我设法运行了该应用程序，但问题是它的运行速度非常慢。 Eg the index.html is a static HTML page and needs more than 60 seconds to load. 例如，index.html是静态HTML页面，需要60秒钟以上的时间来加载。 But why? 但为什么？ In Visual Studio and IIS Express still everything works perfectly. 在Visual Studio和IIS Express中，一切仍然可以正常运行。

Futher information: 更多信息：

On publishing, I precompiled the app. 发布时，我对应用程序进行了预编译 。 You can see the directory structure in the image below. 您可以在下图中看到目录结构。 I put these files into C:\\inetpub\\wwwroot\\test" . 我将这些文件放入C:\\inetpub\\wwwroot\\test" 。

The target framework is .NET 4.6 . 目标框架是.NET 4.6 。 Therefore I´ve installed the .NET 4.6 package . 因此，我已经安装了.NET 4.6软件包。 The DefaultAppPool says v4.0, but apparently uses the correct 4.6 version. DefaultAppPool表示v4.0，但显然使用了正确的4.6版本。
For testing I´ve added another application to the same application pool - ie C:\\inetpub\\wwwroot\\test2" - where I put a hello-world index.html. It loads fast. Therefore I expect a problem with MVC5 . 为了进行测试，我在同一应用程序池中添加了另一个应用程序-即C:\\inetpub\\wwwroot\\test2" -在其中放置了hello-world index.html。它加载速度很快。因此，我希望MVC5出现问题。
The Windows Server 2012 is running in a virtual machine. Windows Server 2012在虚拟机中运行。 I gave the VM 4GB RAM and 6 CPU Cores (hyperthreaded), but it didn´t help. 我为VM提供了4GB RAM和6个CPU内核（超线程），但这并没有帮助。 The task manager shows a 5% CPU and 25% RAM consumption . 任务管理器显示5％的CPU和25％的RAM消耗 。 Therefore I assume that the problem lies in the IIS . 因此，我认为问题出在IIS上 。

I really appreciate your help! 非常感谢您的帮助！

1 个解决方案

Thanks, I have finally found the problem: I use the Sql Server LocalDb , which is a local .mdf-file in the filesystem. 谢谢，我终于找到了问题：我使用Sql Server LocalDb ，它是文件系统中的本地.mdf文件。 The Application Pool´s Identity was set to ApplicationPoolIdentity and I had to change it to LocalSystem . 应用程序池的标识设置为ApplicationPoolIdentity ，我不得不将其更改为LocalSystem 。 Now the application pool can access the database and the IIS runs as it should. 现在，应用程序池可以访问数据库，并且IIS可以正常运行。

What surprised me is, that even though the IIS didn´t need the database to load the index.html, it apparently tried to establish a connection right away. 令我惊讶的是，即使IIS 不需要数据库来加载index.html，它显然也试图立即建立连接。 After unsuccessful 60s it said, "Well I couldn´t connect, so I will try it without the database." 失败60 秒钟后，它说： “好吧，我无法连接，所以我将在没有数据库的情况下进行尝试。” and continued loading. 并继续加载。 In case the database was not needed, it worked. 万一不需要数据库，它就可以工作。 I guess that happens due to the DB-Connection-Pooling. 我猜这是由于DB-Connection-Pooling而发生的。