The Case for Higher-Level Power Management
Position Statement
Outline of Talk
Goal: To Reduce Energy Consumption
-> Role for Operating System and Application Collaboration
Frustrations
Application-Driven Case Study: Hiker’s Buddy
Hikers Buddy(in Native Habitat)
Global Positioning System
On the Trail
Power-Related States
Power Mgt in Hiker’s Buddy
Experimentation
Method
What are the Costs?Measuring Power Consumption (PalmPilot Pro)
Reducing Energy Consumption
What are the Highest Costsin Hiker’s Buddy?
Power States Model of Hiker’s Buddy (GPS Polling)
Intuition for Reducing Energy Consumption of GPS Operation
Effect of Polling Timeouts
Wishlist for Power-wise OS
Related Work
Conclusions
Email: carla@cs.duke.edu
Home Page: //www.cs.duke.edu/~carla/