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Re:Ask HN: What are the 20% tips that will get my code to pe... by jacquesm on Sunday February 01, 2015 @09:16AM (#8979908)
Use a profiler.

Make your code do less work.

Use less memory so more of your code/data fits in the CPU cache.

Understand the algorithms that you use, their strengths and weaknesses.

No magic tricks, just hard work.

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