Sun has now published SpecJAppServer2004 benchmark results with MySQL. The results are pretty good as we can see and it is also good to know some room for tuning remains so we can hope getting even better results this time. Jenny Chen published good MySQL Tuning writeup so I would not repeat it. It was great colaboration between Sun and MySQL teams which allowed us to deliver these results.
About Peter Zaitsev
Peter managed the High Performance Group within MySQL until 2006, when he founded Percona. Peter has a Master's Degree in Computer Science and is an expert in database kernels, computer hardware, and application scaling.