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Profile Matlab System block in Simulink

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Etienne Coetzee
Etienne Coetzee on 4 Jun 2021
Answered: Robert Jack on 15 Jun 2023
I have a Simulink model with a Matlab system block in, and would like to understand which code in the block is slowing the simulation down. when I run the profiler I get a breakdown that shows me the System Block is taking most of the time, but it doesn't show me where in the block the slowdown occurs. Is there a way to get such a breakdown similar to what you get when you run the profiler in Matlab? Thanks.

Answers (2)

Vimal Rathod
Vimal Rathod on 18 Jun 2021
Edited: Vimal Rathod on 18 Jun 2021
Hello,
Like you said, the Simulink profiler would not show MATLAB line-by-line profiling results - rather it will show the time spent on the System block (as a whole).
To understand the performance of individual lines of the System object MATLAB code, we should use the MATLAB profiler as of now there is no other workaround.

Robert Jack
Robert Jack on 15 Jun 2023
It is possible to use the MATLAB profiler on a Simulink model. Create a script in matlab as follows:-
modelName = 'MyExample';
load_system(modelName)
set_param(modelName,'Profile','on');
open_system(modelName)
sim(modelName);
Then use the standard Matlab profiler to run this script.

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