Load tests provide named counter sets, organized by technology, that are useful when you analyze performance counter data. The counter sets include Load Test, IIS, ASP.NET, and SQL. When you create a load test with the Load Test Wizard, you add an initial set of counters. These offer you a set of predefined and important counter sets for your load test. You manage your counters in the Load Test Editor.

Note:
If your load tests are distributed to a rig, controller and agent counters are automatically collected and mapped to the target computers.