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Datacentre energy efficiency optimization in high-speed packet I/O frameworks
Date
Abstract
To meet the demands for faster network packet processing requirements in datacentres, packet I/O accelerator solutions have emerged which are dedicated to enabling faster packet forwarding capabilities. Often, such I/O frameworks are implemented in software that is hosted on a Linux operating system and for many of the solutions the software is run in the system’s userspace, thus bypassing the operating system’s kernel to facilitate a streamlined packet throughput rate. However, operating outside of the kernel loses the real-time interrupt facility, so many of the I/O accelerator schemes rely on a very high-speed polling solution to react to receive packet traffic arrivals. This continuous fast polling rate results in the CPU running hot and wasting energy. An experimental approach to reduce such energy inefficiencies is introduced based on an adaptive polling mechanism (APM). The investigation results show potential CPU energy savings ranging between 9% and 76% depending on traffic load, and if CPU sleep state is allowed.
Supervisor
Description
peer-reviewed
The full text of this article will not be available in ULIR until the embargo expires on the 23/03/2023
Publisher
Inderscience
Citation
International Journal of Communication Networks and Distributed Systems;