tracker issue : CF-3040494

Problem:

This shoudl be considered a severe bug in a production environment with IIS6 as a web server.  Coldfusion 9 does not exceed the sum of 25 requests (running or queued) when using IIS 6.0, even though request tuning is set to higher values.  This behavior did not occur in CF8.  This behavior does not occur with CF9 and Apache, or CF9 and the built-in web server.  This behavior only occurs with CF9 and IIS 6.
Method:

1. Install Coldfusion 9 on a Windows server running IIS 6.02. Create a new .cfm, write a simple sleep(10000) function inside a cfscript block.  Place the sleep function (eg. sleep.cfm) in the web root.3. In CFAdmin, Set Request Tuning to accept say, 30 running requests.3. At the command line, Run the CFSTAT utility (e.g. c:\coldfusion\bin\cfstat 1).4. In the browser, load the page with the sleep.cfm.  Let it complete loading once.  Then hit refresh (or F5) quickly to create many requests.5. Observe CFSTAT in the command line.  The running requests will climb, and will hit a maximum of 25, but nothing will get queued.You can repeat the test with ANY Request Tuning Settings.  For example, if you set 18 maximum requests, CFSTAT will show 18 running, and queue only 7, for a total of 25.If you leave it at 10 (default), CFSTAT will climb to 10, and queue only 15, for a total of 25. If you set it to a value higher than 25, it will only climb to 20 and queues nothing.For high traffic sites, visitors are given timeout errors constantly.  
Result:

Coldfusion 9 does not exceed the sum of 25 requests (running or queued) when using IIS 6.0, even though request tuning is set to higher values.

----------------------------- Additional Watson Details -----------------------------

Watson Bug ID:	3040494

External Customer Info:
External Company:  
External Customer Name: Dat Pham
External Customer Email: 11C102814126620E9920157F
External Test Config: 12/03/2009

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