How to: Compare Profiler Data Files
You can compare the results of two different profiler result files (.vsp or .vsps) by creating a New Diff Report. For information about Diff reports, see Comparing Profiler Data Files.
To create comparison file view for a project in Performance Explorer
In Performance Explorer, under Reports, select the .vsp or .vsps report file that you want to use as the baseline values for comparison.
Select the .vsp or .vsps report files that you want to compare.
Right-click one of the selected files and then click Compare Reports.
To compare values
Select Comparison Report tab in the Report View window.
In the Table drop-down list, select either function or modules to compare.
In the Column drop-down list, select the value that you want to compare.
(optional) Type a value for Threshold.
Click Apply.
To compare report files
On the Analyze menu, select Compare Performance Reports.
In the Select analysis files for comparison window, browse and select the Baseline File analysis file (.vsp or .vsps) and the Comparison File (.vsp or .vsps).
Click OK.