- Click theCompare Resultsbutton from theVTunetoolbar.ProfilerTheCompare Resultswindow opens.OptionDescriptionResult 1 / Result 2drop-down menuSpecify the results you want to compare. Choose the result of the current project from the drop-down menu, or click theBrowsebutton to choose a result from a different project.Swap ResultsbuttonClick this button to change the order of the result files you want to compare. Result 1 always serves as the basis for comparison.ComparebuttonClick this button to view the difference between the specified result files. This button is only active if the selected results can be compared. Otherwise, an error message is displayed.
- Specify two results that you want to compare and click theComparebutton.A new result tab opens providing difference between the two results per performance metric.
Use this view:
To do this:
Analyze the difference in the overall application performance between two results and the system/platform difference, if any. Start exploring the changes from the
Summarywindow and then move to the
Bottom-upanalysis to identify the changes per program unit.
Analyze the data columns of the two results and a new column with the difference between these results for a function and its callers.
Compare results and identify the difference in event count and performance per hardware event-based metrics collected during event-based sampling analysis.
Explore the performance difference between two collection runs for a function and its callees.
Get a holistic picture of the performance changes before and after optimization by comparing data for a function, its callers and callees.
Understand how differently input values, command line parameters, or compilation options affect the performance when you are optimizing your target. Double-click a program unit of your interest and compare the performance data for each line of the source/assembly code.