Behavior-based adaptation of computer systems

Methods, systems and apparatus, including computer program products, for behavior-based adaptation of one or more computer systems. A method in accordance with the invention includes receiving rules that specify data of the computer system to be recorded and data of the computer system to be summarized for evaluation. The method includes recording data as specified by the rules. The method includes performing an evaluation of the data recorded. The evaluation includes identifying a change to the computer system and determining whether the change will increase the efficiency of the computer system. The method includes, when the evaluation indicates that the change will increase the efficiency of the computer system, proposing the change.