I have created an ASP.NET application which creates threads in an infinite loop. I set maxWorkerThreads to 20 in processModel in machine.config.

When I checked the Thread count in perfmon there was around 7000 threads created in worker process.

In PageLoad() I have:

using System.Threading;
...
int count = 0;
var threadList = new System.Collections.Generic.List<System.Threading.Thread>();
try
{
  while (true)
  {
    Thread newThread = new Thread(ThreadStart(DummyCall), 1024);
    newThread.Start();
    threadList.Add(newThread);
    count++;
  }
}
catch (Exception ex)
{
  Response.Write(count + " : " + ex.ToString());
}

Function:

void DummyCall()
{
   System.Threading.Thread.Sleep(1000000000);
}

How do I restrict thread creation in ASP.NET with IIS6/7?