I was just reading the monthly Java performance tunning newsletter http://www.javaperformancetuning.com/news/news104.shtml and it is talking about the need to allow the “performance expert” access to all the people on the project. This is so true! Performance is not a bolt on that is added to a system it is the responsibility of everybody within the project. Often the performance expert is in some projects the glue that brings these people together to think about performance and to validate their design decisions. In other projects they are the negotiators that try to provide some engineering assessment when everybody else is blame storming.
The key message to management is the performance expert can only fix performance issues if all the parties on the project are involved and on side.