User- and process-driven dynamic voltage and frequency scaling

Bin Lin*, Arindam Mallik, Peter A Dinda, Gokhan Memik, Robert Dick

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

25 Scopus citations


We describe and evaluate two new, independently-applicable power reduction techniques for power management on processors that support dynamic voltage and frequency scaling (DVFS): user-driven frequency scaling (UDFS) and process-driven voltage scaling (PDVS). In PDVS, a CPU-customized profile is derived offline that encodes the minimum voltage needed to achieve stability at each combination of CPU frequency and temperature. On a typical processor, PDVS reduces the voltage below the worst-case minimum operating voltages given in datasheets. UDFS, on the other hand, dynamically adapts CPU frequency to the individual user and the workload through direct user feedback. Our UDFS algorithms dramatically reduce typical operating frequencies and voltages while maintaining performance at a satisfactory level for each user. We evaluate our techniques independently and together through user studies conducted on a Pentium M laptop running Windows applications. We measure the overall system power and temperature reduction achieved by our methods. Combining PDVS and the best UDFS scheme reduces measured system power by 49.9% (27.8% PDVS, 22.1% UDFS), averaged across all our users and applications, compared to Windows XP DVFS. The average temperature of the CPU is decreased by 13.2°C. User trace-driven simulation to evaluate the CPU only indicates average CPU dynamic power savings of 57.3% (32.4% PDVS, 24.9% UDFS), with a maximum reduction of 83.4%. In a multitasking environment, the same UDFS+PDVS technique reduces the CPU dynamic power by 75.7% on average.

Original languageEnglish (US)
Title of host publicationISPASS 2009 - International Symposium on Performance Analysis of Systems and Software
Number of pages12
StatePublished - Sep 22 2009
EventInternational Symposium on Performance Analysis of Systems and Software, ISPASS 2009 - Boston, MA, United States
Duration: Apr 26 2009Apr 28 2009


OtherInternational Symposium on Performance Analysis of Systems and Software, ISPASS 2009
CountryUnited States
CityBoston, MA

ASJC Scopus subject areas

  • Information Systems
  • Software

Fingerprint Dive into the research topics of 'User- and process-driven dynamic voltage and frequency scaling'. Together they form a unique fingerprint.

Cite this