By looking at the part of the report image provided, it is not clear whether you are looking at the summary or the detailed report, of the profiler. Please ensure you look at the detailed report.
Assuming the discrepancy is in the detailed report, since, I do not have access to the specific details of your model, I cannot state the exact reason for the discrepancy you are observing. But few common reasons why this may have happened could be -
- There could be overhead time which the profiler does not attribute to any specific part of the model. This includes time spent to run the profiler itself.
- The profiler might use sampling techniques to estimate the time spent in different parts of the model. This can lead to inaccuracies since not every execution cycle is measured.
For more details about the Simulink Profiler, its usage and report details, you may refer to this documentation: https://www.mathworks.com/help/releases/R2019b/simulink/ug/how-profiler-captures-performance-data.html.
