1. Performance Guarantees for Web Server End-Systems: A Control-Theoretical Approach Abdelzaher, Shin, Bhatti

2. What’s It All About Applying Control Theory to QoS

3. What Do They Do?

4. How Do They Do It? Feedback Control Using Content Adaptation (Level of Detail) Stratified Service

5. What Is Feedback Control?

6. What Do You Need For Feedback Control? Sensors / Actuators Model

8. Sensors served request rate + delivered byte bandwidth

9. Actuators Admission control Degradation of client QoS

10. Transfer Function (The Model)

12. Does It Work?

14. How Does This Apply To AC? Self-optimization Self-maintenance? Heuristics vs. Control Theory