The SharePoint 2007 Test Data Population Tool (WSSDW.exe) is a capacity planning and performance testing tool that populates data for testing SharePoint deployments. The SharePoint 2007 Test Data Population Tool is available as a command-line executable program that extracts information about how to populate the server from an XML configuration file, and calls Microsoft .NET assembly: WSSDWLib.dll. The tool is explained in the article, Plan capacity by using the SharePoint 2007 Test Data Population Tool.
Use this tool to populate test data for SharePoint capacity planning. Also included are some sample test scripts that can be used for performance and load testing SharePoint and Excel Services with the test data. These tools are being provided as is and there is no ongoing support for these tools. Please send email to firstname.lastname@example.org with feedback.
Excel Services performance testing samples have now beed added as a download. These samples include about a dozen performance testing scripts and are based on the "Microsoft Visual Studio 2005 Team Edition for Software Testers" performance testing tool.
For additional SharePoint performance and capacity planning information, see Plan for performance and capacity
For additional Excel Services performance and capacity planning information, see Determine resource requirements to support Excel Services