TO My parents Acknowledgements

First of all I would like to thank my advisor Prof. Jayant Haritsa for giving me the opportunity to pursue my project under his guidance. I thank him, for his constant and valuable guidance, support and encouragement during my stay at IISc. I would like to thank my project partner Mayuresh Kunjir as well as other members of the Database Systems Lab for providing a stimulating and fun environment for work. I would like to thank my other friends at IISc who have made my stay at IISc memorable. I thank my parents for their continued support throughout my career. i With the total energy usage of computing systems increasing at a steep rate, the tradi-tional performance and price/performance only perspective of the designers of computing systems is changing and much attention has been paid towards designing power and en-ergy efficient systems. Increasing energy usage increases the powering cost of computer systems while overheating caused by a high power usage increases the probability of ther-mal failures so it increases the cooling cost of the computer systems. Data centers ar