An Energy-Efficient Scheduler for Throughput Guaranteed Jobs on Asymmetric Multi-Core Platforms

A recent trend in computing platforms is moving from homogeneous multi-core 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 jobs to asymmetric cores running at adjustable frequency. In this paper, we propose an energy-efficient scheduler for throughput guaranteed jobs running on asymmetric multi-core platforms. The proposed scheduler not only determines the frequency of cores and job-to-core assignment in order to reduce energy consumption, but also schedules the jobs so that the throughput of all jobs are guaranteed. The simulation results indicate that the proposed scheduler consumes 40% less energy than the existing Global Task Scheduler with DVFS enabled.