Power-aware I/O virtualization

  • Authors:
  • Kun Tian;Yaozu Dong

  • Affiliations:
  • Intel China Software Center;Intel China Software Center

  • Venue:
  • WIOV'10 Proceedings of the 2nd conference on I/O virtualization
  • Year:
  • 2010

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Abstract

Power consumption is one of the key concerns in modern computers within which I/O consumes a significant portion of power, from portable devices to servers. This concern has led to the development of various hardware and software techniques to improve the energy efficiency of I/O subsystems in the native platform. However, virtualization poses new challenges, preventing those techniques from achieving the desired level of energy efficiency. In this paper, we analyze how I/O virtualization challenges impact energy efficiency, and propose a novel power-aware I/O virtualization architecture to tackle them. Our preliminary research on portable devices shows that new architecture can significantly extend battery life in a typical idle scenario, compared to existing solutions.