Is there a performance compromise if the Application pool in IIS7 is set to 32bit enabled.
Any blog or aritcle on this or any one has experienced this.
Regards
"For optimal performance, use x64 based systems running 32 bit mode applicatoin pools. You'll get 4 GB per application pool"
http://forums.iis.net/t/1149410.aspx
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I have a very unusual problem with W3WP process (IIS Worker Process). It is not taking enough memory from my CPU to run faster. It is impacting my development work as it is taking way to long to pull up a local website. When I start the website from my localhost, W3WP start at roughly 50MB and takes nearly 10 min to spike upto 100MB.
Is there a way to make W3WP run fatser?
I am using a 64bit 3.4GHZ Quad Core i5 CPU with 8GB RAM. OS Windows 7 Enterprise Edition.
you can use .NET Profiler too see the slow methods.
Also you can change resource limits ( CPU , Memory , ... ) in advanced application pool settings.
I went to IIS settings and changed the 'Worker Process'/'Change .Net Framework Version' from 2.XX to 4.XX. Also I have a dedicated app pool for my application and stopped all other applications. These changes made things a lot better that what it was.
I used to have my application in iis 6 and the process w3wp consume max for 4Gb now am using the new version this amount has increased 2-3GB.
any recommended optimization configuration.?
This articles might help you find a suitable solution:
w3wp.exe using too much memory and resources
Identifying Worker Process (w3wp.exe) – IIS 6.0 and IIS 7.0 for Debugging ASP.NET Application
We currently have an web application running on IIS6 on a 32bit machine.
This application is running smooth and stable. It is built with the target "Any CPU".
Now we are copying this exact application to an 64bit IIS7 machine. We only changed the web.config, according to the IIS7 format.
On the application pool we have set the "enable 32bit applications" to true.
When we put some load on this new server, the application behaves entirely different from it's old environment.
We see high CPU and high memory usage. And the memory (private bytes) goes up, but does not seem to be reclaimed when the load ends.
This is not what we expected.
Did anyone encounter this same behavior?
We expect it to be some mistake in the server or application configuration. Any suggestions what settings to check?
IIS 7 introduces the new pipe line mode "integrated" for application pools. Running your application in this mode can change the applications behaviour. If you use this mode, change it to "classic" and try again.
I know it depends, but I am just curious what specifications others are using to run a simple site with a MS SQL Server back-end. What is recommended for the application, not the database?
If you're not talking about the database, I would say that running a simple MVC web application you would just need enough RAM to run whatever Windows OS you plan on deploying it under. You shouldn't need any more than the recommended amount.
So for example, here are the Windows Server 2008 requirements.
Would have to agree with Joe, the recommended RAM for running the OS should be sufficient. However, when you start to use resource hungry tools like SQL Server I would always recommend adding at least 1 GB.
You can run a simple MVC site on Windows XP with IIS 5.1 and SQL Server 2005 Express. Here are the system requirements for Windows XP.
RAM is so cheap now I would go with at least 2 GB.
In IIS6 it's possible to have more than one ASP.NET application running in the same application pool. This is fine, except that there is nothing in IIS6 that prevents you from running multiple .NET versions in the same pool.
When you create application pools in IIS7 you must explicitly state was .NET version will be running in that pool. Running multiple .NET versions in IIS7, in the same application, is impossible.
How can I enforce such rules on my IIS6 server in order to prevent my deployment team from creating such problems?
What I do:
Step 1. Create the following application pools:
.NET 1.1 Apps
.NET 2.0 Apps
Step 2. Disable the "Default App Pool"
Now, any time a new application is configured in IIS, it will not work right away because the default app pool is disabled. This forces the person configuring the application to select an app pool that is appropriate for the .NET framework version of the app.
We tend to use one application pool per site, so that each application is isolated in its own process space. Application pool recycles will only affect a single application, and each worker process ends up with its own 4gb memory space. Badly programmed applications have no chance of affecting other applications, resulting in a highly isolated deployment model.
We've also standardized on x64 OS builds running 32bit application pools. While there is overhead using this technique since each application ppol contains a separate copy of the .Net framework, we feel that the added granularity of the application space adds stability to our deployments. You also get the ability to run each application as it's own domain identity, allowing for further memory space isolation and eliminating any need for identity impersonate in web configs.
With IIS 7, you have the ability to run each application pool as either 32 bit or 64 bit, so you can run large memory applications in 64 bit application pools. IIS 7 application pool security is also much more simplified.
I don't think you can. What I do is name my app pools in IIS 6 so that they show what .Net version they host. That way it's easy to pick the correct app pool when creating a new application.
If I remember correctly, you can also setup application pools in IIS6 (Windows 2003). Create one application pool per framework version in use.
I am not aware of any possibility to enforce the version of the .NET framework being used by an application. If you have setup an application pool to use .NET 1.1 and you have a .NET 2.0 application running in that application pool, you will get an exception in the application (yellow screen of death), since it will not find some referenced assemblies and classes.