This article was previously published under Q231282
We strongly recommend that all users upgrade to Microsoft Internet Information Services (IIS) version 7.0 running on Microsoft Windows Server 2008. IIS 7.0 significantly increases Web infrastructure security. For more information about IIS security-related topics, visit the following Microsoft Web site:
This article provides a list of tools you can use to simulate load for your Web applications. By simulating load for your application, you can test concurrency issues as well as better understand how your application behaves under stress. Testing load and concurrency by refreshing a browser is not considered a valid test.
The following Web stress tools are available from Microsoft:
Web Capacity Analysis Tool
The IIS 6.0 Resource Kit Tools include WCAT 5.2. To download the IIS 6.0 Resource Kit Tools, visit the following Microsoft Web site:
With these tools you can stress test your Web server to see how it reacts when several hundred users access your application at peak times. These tools can also be used to test the server-side components for performance, locks, and other scalability issues. A Web application that relies on databases can also be tested on parameters such as concurrency, transactions, number of users, locks, pooling, and so forth.
Microsoft Internet Information Server 3.0, Microsoft Internet Information Server 4.0, Microsoft Internet Information Services 5.0, Microsoft Internet Information Services 6.0, Microsoft Internet Information Services 7.0