Performance Considerations for Making Web Service Calls from ASPX Pages contains the following sections:
		  
- The Scenario: Performance Devastation When Calling a Web Service from an ASP.NET Page
This section describes problems that you may notice when you
				make a Web service call from a middle-tier environment such as ASP.NET. - Tuning Around the Problem
This section describes configuration settings that you can use
				to work around the problems that were mentioned previously. - The Real Solution: Asynchronous Request Handling
This section describes how to design your Web applications to
				avoid the problems that were mentioned previously. 
The 
The Scenario: Performance Devastation When Calling a Web Service from an ASP.NET Page section contains the following topics:
		  
- HTTP Two-Connection Limit
 - Thread Pool Limits
 - The Problem Is Not Restricted to Web Services
 
The 
Tuning Around the Problem section contains the following topics:
		  
- maxconnection
 - maxWorkerThreads and minFreeThreads
 - Windows XP Limitations
 
The 
The Real Solution: Asynchronous Request Handling section contains the following topics:
		  
- The First Piece in the Asynchronous Solution: Asynchronous
				Web Service Calls
 - The Second Piece of the Asynchronous Solution: Asynchronous
				PreRequestHandler Execution