That time I wasted weeks hand optimizing assembly because I benchmarked on random data

Once upon a time I worked in the field of Java Optimizations. The target system was a distributed data processing platform that ran across hundreds of thousands of machines. At such scales, a 0.5% improvement would easily make up my salary going forward, and 2% was a good result for the half. That doesn’t mean it was … Continue reading "That time I wasted weeks hand optimizing assembly because I…