CODEWITHSUNDEEP
asp.net-mvciis-7
littlecharva
littlecharva

Reputation: 4244

ASP.NET MVC App takes ages to respond sometimes

I have an ASP.NET MVC app running in IIS7. Sometimes when I type the URL into a browser it takes 5-10 seconds before it responds, then after that it is fine. It's like it's taking it's time starting/waking up.

How should I best proceed with trying to identify the problem?

Upvotes: 1

Views: 1413

Answers (3)

Arief
Arief

Reputation: 6085

You can use ASP.NET Mini Profiler to check what takes too long to load. Web.config re-saving can cause your application to be restarted and if your website is not compiled, it takes longer to load as well, plus if you have a heavy database call. In other words, there's no general solution for this, it depends on how you design the application and then improve what appear to be not efficient.

Upvotes: 0

Brandon
Brandon

Reputation: 69953

This is probably normal behaviour rather than a problem. It's probably going to sleep because it hasn't had any requests for a long time. You can try changing the Idle Timeout under the Application Pool's advanced settings or if you're running .NET 4.0, you can keep the application always running.

Upvotes: 2

Jollymorphic
Jollymorphic

Reputation: 3530

If this is happening right after you've edited ASPX files or rebuilt other .NET sources (e.g., *.cs), then it's probably because of the JIT native code generation of the .NET code. This can be solved by a warm-up utility like the (currently defunct, sadly) IIS warm-up module.

Upvotes: 1

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