Computing

, Volume 96, Issue 12, pp 1163–1177 | Cite as

Energy-centric DVFS controlling method for multi-core platforms

  • Shin-gyu Kim
  • Hyeonsang Eom
  • Heon Y. Yeom
  • Sang Lyul Min
Article

Abstract

Dynamic voltage and frequency scaling (DVFS) is a well-known and effective technique for reducing energy consumption in modern processors. However, accurately predicting the effect of frequency scaling on system performance is a challenging problem in real environments. In this paper, we propose a realistic DVFS performance prediction method, and a practical DVFS control policy (eDVFS) that aims to minimize total energy consumption in multi-core platforms. We also present power consumption estimation models for CPU and DRAM by exploiting a hardware energy monitoring unit. We implemented eDVFS in Linux, and our evaluation results show that eDVFS can save a substantial amount of energy compared with Linux “on-demand” CPU governor in diverse environments.

Keywords

DVFS performance prediction CPU and DRAM power prediction Energy saving Multi-core processor 

Mathematics Subject Classification

68M20 

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Copyright information

© Springer-Verlag Wien 2013

Authors and Affiliations

  • Shin-gyu Kim
    • 1
  • Hyeonsang Eom
    • 1
  • Heon Y. Yeom
    • 1
  • Sang Lyul Min
    • 1
  1. 1.School of Computer Science and Engineering, Seoul National UniversitySeoulKorea

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