嵌入式设备中差异化多任务节能优化调度方法研究

Embedded Devices in the Differentiation of Multitasking Energy-saving Optimization Scheduling Method Research

当前任务节能调度方法通常需预先掌握嵌入式设备中差异化多任务的属性,但在实际应用中任务抵达处理器后才可获取任务属性,导致当前方法应用性较低。为此,提出一种新的嵌入式设备中差异化多任务节能优化调度方法,对嵌入式设备中处理器模型、任务模型和功耗模型进行描述。通过引入速度调节因子,依据松弛时间,结合功耗管理技术,降低嵌入式设备中差异化任务执行速度,达到合理调度与节省能耗之间的合理折中,给出嵌入式设备中差异化多任务节能优化调度的实现过程。实验结果表明,所提方法节能效果好,调度性能优。

The current task energy-efficient scheduling method usually need to have prior differentiation in the embedded devices multitasking attributes, but in practice after arriving at the processor task to get the task properties, leading to a lower current method applied. For this, a new differentiation multitasking energy-saving optimization scheduling method in embedded devices, processor model was put forward, task model in the embedded devices and power consumption model is described. By introducing speed regulation factor, based on the relaxation time,combined with the power management technology, differential task execution speed was reduced in embedded devices, to achieve a reasonable compromise between reasonable scheduling and save energy consumption. Differentiation of multitasking in embedded devices is presented and the implementation process of energy saving optimization scheduling. The experimental results show that the proposed method is good at saving energy optimal scheduling performance.