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Altera_Forum's avatar
Altera_Forum
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19 years ago

Performance Counter offset

Hi, i have a question about the PERFORMANCE COUNTER component. I have the following code to measure the overhead from starting/stoping the counter: PERF_BEGIN (PERFORMANCE_COUNTER_BASE, 1);...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
19 years ago

I'm only guessing here, but maybe you have an instruction and/or data cache, in which case the loop may be optimising your code whereas the single instance is not able to.