Measuring User-Perceived Internet Performance in Multiple Locations

For her love, support and sense of humor. iii ACKNOWLEDGEMENTS This work could not have been completed without the help of many people. My advisor, Ellen Zegura, has been a constant source of motivation. Her ability to cut to the core of complex issues has never ceased to surprise and inspire me. Matt Sanders and Russ Clark have provided much appreciated friendship and stimulating discussion. Matt also participated in addressing the practical aspects of significant portions of the studies in this work. Thomas Hildebrandt and Bill Tice contributed to the design and implementation of very intricate, cutting edge pieces of software. I would also like to thank the faculty and students of Georgia Tech's Networking and Telecommunications Group — too many to name here individually — who have provided many thought-provoking discussions about many areas of networking research. Finally, I wish to thank my wife, LuAnn, for being patient, understanding and inspiring. While many relationships tend to be strained under the stress of Ph.D. studies, ours has only grown stronger.