Performance Considerations; A.1 Performance Considerations - Texas Instruments TMS320C67 DSP Series Programmer's Reference Manual

Performance Considerations

A.1 Performance Considerations

A-2
Although DSPLIB can be used as a first estimation of processor performance
for a specific function, you should be aware that the generic nature of DSPLIB
might add extra cycles not required for customer specific usage.
Benchmark cycles presented assume best-case conditions, typically assum-
ing all code and data are placed in internal data memory. Any extra cycles due
to placement of code or data in external data memory or cache-associated ef-
fects (cache hits or misses) are not considered when computing the cycle
counts.
You should also be aware that execution speed in a system is dependent on
where the different sections of program and data are located in memory. You
should account for such differences when trying to explain why a routine is tak-
ing more time than the reported DSPLIB benchmarks.