A Power Efficient Scheduler for Asymmetric Multi-core Platform

A recent trend in computing platforms is moving from homogeneous multicore architectures toward heterogeneous and asymmetric multi-core. Therefore, the design of new schedulers for asymmetric multi-core platform has become an important issue. However, most of the existing schedulers focus on how to distinguish workloads suitable for performance “big” cores from those for power-efficient “little” cores, without considering how to distribute tasks to asymmetric cores running at adjustable frequency. In this paper, we propose an energy-efficient scheduler for throughput guaranteed tasks running on asymmetric multi-core platforms. The proposed scheduler not only determines the frequency of cores and task assignment in order to reduce energy consumption, but also schedules the tasks so that the throughput of all tasks are guaranteed. The implement results indicate that the proposed scheduler consumes 29% less energy than the conventional Compeletely Fair Scheduler with DVFS enabled.