Load Tests for WCF Services

Refer following links:

Generating Load Tests for WCF Services with the WCF Load Test Tool

http://blogs.msdn.com/b/mcsuksoldev/archive/2010/12/03/generating-load-tests-for-wcf-services-with-the-wcf-load-test-tool.aspx

Create and run a load test

http://msdn.microsoft.com/en-us/library/ms182594.aspx