Excellent investigation into the "why" of a performance problem. All too often I can get to the bottom of a "what" of a performance problem, but answering "why

Excellent investigation into the "why" of a performance problem. All too often I can get to the bottom of a "what" of a performance problem, but answering "why" can be an entirely different ball-game. Running this all the way to the ground must have felt so satisfying.