Energy-Efficient Considerations on a Variable-Bitrate PCI-Express Device

  • Authors:
  • Yung-Hen Lee;Jian-Jia Chen;Chi-Sheng Shih

  • Affiliations:
  • Dell Corporation, Taipei, Taiwan;Computer Engineering and Networks Laboratory (TIK), Swiss Federal Institute of Technology Zurich (ETH Zurich), Zurich, Switzerland;Department of Computer Science and Information Engineering and Graduate Institute of Networking and Multimedia, National Taiwan University, Taipei, Taiwan

  • Venue:
  • Journal of Signal Processing Systems
  • Year:
  • 2010

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Abstract

Dynamic power management has been adopted in many systems to reduce the power/energy consumption by changing the system state dynamically. This paper explores energy efficiency for systems equipped with PCI-Express devices, which are designed for low power consumption and high performance, compared to corresponding PCI devices. We propose dynamic power management mechanism and a management policy for energy-efficient considerations. A case study for a variable-bit-rate local-area-network device under the PCI-Express specification is exploited to provide supports for dynamic packet transmission. Simulation results show that the proposed mechanism and policy would reduce the system energy consumption substantially.