GCC Compiler Tests At A Variety Of Optimization Levels Using Clear Linux

First up is a look at the FFTW performance with its significant performance improvements when hitting even Og/Os optimizations. Interestingly, -O2 was slightly faster than -O3. The -march=native option yielded slightly improved performance.

Obviously without any optimizations, the build time is quicker.

The test install size changed very little between the different optimization levels.

Interestingly, the -march=native tests were slower than their counterparts.