For (really hardcore) optimizing, the current bleadperl has Porting/bench.pl by dave_the_m, which uses the cachegrind tool to count the CPU cycles executed for a benchmark. It's mostly intended for benchmarking perl itself, but I guess it could well be used for microbenchmarking what approach is faster, after having arrived at a minimal op count.

In reply to Re^7: Speed Improvement (insignificant) by Corion
in thread Speed Improvement by Nar

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