Developing Autonomic Feedback Control for Heterogeneous Systems Using Cascaded Controllers

The motivation of the work is based on the static use of reference point values in dynamic feedback control systems that are based on control theoretic techniques. Reference point values are threshold values that values of attributes characterizing system behavior can be compared to. The result of the comparison is used to adjust the tuning parameter of the system being controlled. If the entity being controlled is a server then the best choice for the reference value may depend on many factors such as the required processing times, the machine speed that the server is executing on, etc. This paper illustrates an approach to automatically change the reference value for different server hardware. Comparisons are made between the approach proposed in this paper and other dynamic feedback control approaches. Results show that the proposed approach outperforms the other dynamic feedback control approaches