C99 variable length automatic array performance
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Published on 2010-06-10T22:58:32Z
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2010/06/10
23:23 UTC
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c
|Performance
Is there significant cpu/memory overhead associated with using automatic arrays with g++/Intel on 64-bit x86 linux platform?
int function(int N) {
double array[N];
overhead compared to allocating array before hand (assuming function is called multiple times)
overhead compared to using new
overhead compared to using
malloc
The range of N may be from 1kb to 16kb roughly, stack overrun is not a problem.
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