You can compare two test results to see how your server performance changed from one test run to another.
To compare results:
Click on the toolbar. The Compare Runs window is shown.
The number of test runs that are saved and displayed in the Compare Runs window is set by the Maximum number of test executions to be saved option.
Select the two results you want to compare.
The results of both test runs will be displayed on the Statistics page. If you did not add graphs or tables to the page, follow the instructions of the Statistics page topic. In the graphs, the vertical axis for each metric will be adjusted to the highest value to make the comparison easier.
You can export the compared results in the same way you export other test results.