I am using ASP.NET 2.0, .NET 2.0 Framework, and IIS 7. I am seeing a large queue of "requests" appear under the "worker process" option. State recorded appear to be `Authenticate Request` and `Execute Request Handles` more than anything else.

I have amended `aspnet.config` in `C:\Windows\Microsoft.NET\Framework64\v2.0.50727` (32 bit path and 64 bit path) to include:

```
maxConcurrentRequestsPerCPU="50000"
maxConcurrentThreadsPerCPU="0"
requestQueueLimit="50000"

```

I have amended `machine.config` in `C:\Windows\Microsoft.NET\Framework64\v2.0.50727\CONFIG` (32-bit and 64-bit path) to include:

```
autoConfig="false"
maxIoThreads="100"
maxWorkerThreads="100"
minIoThreads="50"
minWorkerThreads="50"
minFreeThreads="176"
minLocalRequestFreeThreads="152"

```

Still I get this issue.

The issue manifests itself as a large number of requests in the Worker Process queue.

The number of current connections to the website display 500 when this issue occurs. I don't think I have seen concurrent connections over 500 without this issue occurring.

The web application slows as the requests block.

Refreshing the application pool resolves for a while (as expected) as the load is spread between the two pools.

The application pool in question FIXED REQUEST have been set to refresh on 50000.

Note: .NET 3.5 framework uses 2.0 framework appnet and machine configuration files, I believe.

Server resources (CPU, RAM) are not used to the full potential.