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Wednesday, May 21 • 2:00pm - 2:50pm
Killing Two Birds with One Stone: a Smart Task Scheduler for Smartphones - Mingyong Kim, Korea University

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Smartphones have adopted Asynchronous Symmetric Multiprocessors (aSMP) to fulfill two conflicting requirements of the users: long battery life and high performance. As each core has independent frequency/voltage control, aSMP can save energy by lowering frequency of the cores running light applications while not degrading performance of other cores. Unfortunately, the Linux task scheduler does not exploit the energy saving mechanism, since it balances load across the cores regardless of what running applications are. Such pointless load balancing causes energy waste by confusing the scaling governor. This presentation proposes a novel task scheduling technique for aSMP that saves energy and improves performance . The proposed technique schedules applications based on their QoS-sensitivity by using an online classification method which is also proposed in this presentation.

Speakers
MK

Minyong Kim

Ph.D. Candidate, Korea University
Minyong Kim is a Ph.D. candidate in the Division of Computer and Communication Engineering, Korea University, Korea, under the supervision of Prof. Sung Woo Chung. His research interests include low power techniques and power profiling techniques for mobile devices. Recently, he developed a novel and energy efficient Linux task scheduler for smartphones and delivered it to LG electronics. In 2011, he proposed a user-aware display power management... Read More →


Wednesday May 21, 2014 2:00pm - 2:50pm
Soleil

Attendees (3)