The Edit Counter wizard allows you to modify an existing performance counter that is shown on the Performance Counters page of the Test Log window. The wizard is called after you click the Edit button in the Performance Counters section of project settings.
The wizard contains the following pages:
On this page, you can specify the name of the tested computer and the counter type.
On this page, you can select one of the four standard server counters.
On this page, you can choose a counter from the list of available custom performance counters.
On this page, you can specify the parameters that will be used to display counter values in a graph.
Generic Test Log - Performance Counters Panel
Adding Performance Counters