e.g:
Below are the execution time of memset() function at different locations.
1. memset() plcaed at 0x0000000000219e96 : Time = 57.10 usec for 3k buffer size.
2. memset() placed at 0x0000000000219d42 : Time = 28.66 usec for 3k buffer size.
- memset is used for reference, other function timings also varies.
- We have compare and verified assembly file for above two conditions,
assembly code generated for memset functions is same.
Below are the project settings:
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1. Code Memory = Flash TCM
2. Flash ART Accelerator = Enabled
3. Flash prefetch buffer = Enabled.
4. Compiler optimization = -o2.
5. Tool chain = STM32CubeIDE, gcc.
6. Clock Frequency = 216Mhz
Queries:
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1. Need more details on why execution timings varies with memory location.
2. How can we achieve deterministic execution time of a particular function irrespective of memory location.
