There is a bit of connecting transitions missing, but basically I understand it thus: He was using a slower buffer serialisation library (for reasons unexplain

There is a bit of connecting transitions missing, but basically I understand it thus: He was using a slower buffer serialisation library (for reasons unexplained), and when challenged set out to prove his choice was the fastest, but pretty soon found out he was wrong. Then he wanted to do the test himself, and along the way he discovered how his processor made benchmarking very noisy in turbo mode.