I have attached some screen shots after which I am unable to understand what to do and how to proceed with test results. Awaiting your comments.
You can use menu item "FileExport..." to pop up a dialog, please specify file name and path that you want to save, "All" is for all displayed contents in the view (processes report, threads report, modules report, hotspots report), "Selection" is for the selection in the view, especially for source view.
For sampling data collection, modify the activity and keep event named CPU_CLK_UNHALTED.CORE only - thus, after runing sampling, the result will display "Most Active Functions In Your Application" which diaply hot functions in your module, and elapse time. Then you can doubl-click to narrow down to hot source lines.