如何跟踪ASP.Net JIT编译？它的速度很慢 [英] How can I trace ASP.Net JIT Compilation? Its very slow

问题描述

如何跟踪应用程序的JIT编译？我们有一个小asp.net应用程序是一个较大的网站的一部分（传统的ASP为code的其余部分），所以它不是很频繁访问，并且是（可能）超时或应用程序池回收后重新编译。重新编译正在长达2分钟！

How can I trace the JIT compilation of an application? We have a small asp.net application that is part of a larger website (classic asp for the rest of the code) so it's not accessed very frequently and is (likely) recompiling after a timeout or app pool recycle. The recompilation is taking up to 2 minutes!!

是否有一个的perfmon跟踪工具或专柜，可以帮助我追查究竟是怎么回事？

Is there a tracing tool or counters in perfmon that can help me trace what exactly is going on?

我要尝试和precompile但我认为超时和应用程序池回收将呈现无用。 （或者是一个坏的假设？）

I was going to try and precompile but I think timeouts and app pool recycles will render that useless. (or is that a bad assumption?)

Thx提前！

推荐答案

如果你真的相信这个问题是JIT，你可以使用.NET性能计数器。打开性能管理控制台（它由操作系统不同而异），然后单击+，然后添加 .NET CLR日新计数器：

If you truly believe that the problem is Jit, you can use .NET Performance Counters. Open the "Performance" Management Console (it varies by operating system) and click the +, then add the .NET CLR Jit counter:

这将让你获得有关JIT，多少时间它花费等一些简单的指标。

This will allow you to get some simple metrics about Jit, how much time is being spent in it, etc.

现在，我不认为这个问题是完全的日新。这可能是ASP.NET编译应用程序到 ASP.NET临时文件，它可能是强名称签名检查等我会考虑很多其他的事情除了CLR日新。

Now, I don't think the problem is entirely on "Jit". It might be ASP.NET compiling your application into Temporary ASP.NET Files, it might be Strong Name signature checking, etc. I would consider many other things besides the CLR Jit.

日新特别是当IL code由运行时编译到code或发现它在NGEN。整个应用程序没有得到JIT编译一次全部 - 每种方法是逐个JIT编译的情况下

Jit specifically is when IL code is compiled into native code by the runtime, or finds it in NGEN. Your whole application doesn't get JITed all at once - each method is JITed on a case by case basis.

我觉得你最好的拍摄是还看汇编总柜台下的 ASP.NET应用程序对象，并尝试pre-编译您的网站。

I think your best shot is to also look at the Compilations Total counter under the ASP.NET Applications object, and try pre-compiling your website.

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