Title :
User-Driven Frequency Scaling
Author :
Mallik, Arindam ; Lin, Bin ; Memik, Gokhan ; Dinda, Peter ; Dick, Robert P.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Northwestern Univ., Evanston, IL
Abstract :
We propose and evaluate user-driven frequency scaling (UDFS) for improved power management on processors that support dynamic voltage and frequency scaling (DVFS), e.g, those used in current laptop and desktop computers. UDFS dynamically adapts CPU frequency to the individual user and the workload through a simple user feedback mechanism, unlike currently-used DVFS methods which rely only on CPU utilization. Our UDFS algorithms dramatically reduce typical operating frequencies while maintaining performance at satisfactory levels for each user. We evaluated our techniques through user studies conducted on a Pentium M laptop running Windows applications. The UDFS scheme reduces measured system power by 22.1%, averaged across all our users and applications, compared to the Windows XP DVFS scheme
Keywords :
computer power supplies; microprocessor chips; power aware computing; CPU frequency; Pentium M laptop; Windows XP DVFS scheme; dynamic frequency scaling; dynamic voltage scaling; improved power management; user feedback mechanism; user-driven frequency scaling; Central Processing Unit; Dynamic voltage scaling; Energy consumption; Energy management; Engineering management; Feedback; Frequency control; Portable computers; Power engineering computing; Power measurement; DVFS; Power Management; User-aware computing;
Journal_Title :
Computer Architecture Letters
DOI :
10.1109/L-CA.2006.16
