Building a Power-Proportional Software Router.
USENIX ATC'12: Proceedings of the 2012 USENIX conference on Annual Technical Conference(2012)
摘要
We aim at improving the power efficiency of network routers without compromising their performance. Using server-based software routers as our prototyping vehicle, we investigate the design of a router that consumes power in proportion to the rate of incoming traffic. We start with an empirical study of power consumption in current software routers, decomposing the total power consumption into its component causes. Informed by this analysis, we develop software mechanisms that exploit the underlying hardware's power management features for more energy-efficient packet processing. We incorporate these mechanisms into Click and demonstrate a router that matches the peak performance of the original (unmodified) router while consuming up to half the power at low loads, with negligible impact on the packet forwarding latency.
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关键词
consumes power,power consumption,power efficiency,power management feature,total power consumption,current software routers,network routers,server-based software routers,software mechanism,energy-efficient packet processing,power-proportional software router
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