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Automated management of complex information technology applications and systems require dynamic configuration of both application-level and system-level parameters. The existence of large number of tunable parameters makes it difficult to design a feedback controller that adjusts these parameters effectively in order to achieve application-level performance targets. In this paper, we introduce a generic approach for reduced dimension control (RDC) that combines online selection of criticaldoi:10.1109/acc.2009.5160376 dblp:conf/amcc/YaoLZ09a fatcat:dtk3lfdf2jbcxoeufj7shihdri