1. Select a run to compare. To select a run, click a data analysis window for the run, or double-click a run in the Navigator.
2. Click
3. Select a run (identified as the Base run) to compare against the first run (identified as the New run, and also labeled Current run in the Compare Runs dialog box).
Notes:
§ By default, Quantify highlights performance changes in the Diff Call Graph. Performance improvements appear in green and regressions appear in red. Functions or paths whose performance is unchanged appear in gray.
§ In the Diff Function List window, Quantify displays the differences, as well as original data for the two runs (labeled New and Base). Negative values indicate performance improvements.
§ For the results to be meaningful, compare runs that use the same measurement type and timing methods for each module. For example, if a run measured an executable at line level and used elapsed time to time blocking and waiting functions, the run you compare it against should have used the same measurement type and timing method.
§ Quantify labels threads with the name of the start function and a sequence number; for example: .<StartFunctionName>_<OrdinalNumber>.; or, when the start function name cannot be determined, .thread_<OrdinalNumber>. If your application launches some threads in a non-deterministic order, assigning special names to the threads you are interested in will ensure that their measurement data is correctly compared between program runs. To rename a thread, while your program is running, use the Rename Thread dialog box in the Run Summary window.
§ The Details tab of the Run Summary window lists the runs that were compared.
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