摘要
为降低嵌入式设备的能量消耗,在对能量最优化设备调度策略(EODSA)及其改进策略IEODSA1不足进行分析的基础上,提出了一种基于子任务及其执行时间的设备调度策略——SEBDSP.该策略将任务分成多个子任务,基于子任务执行时间和设备收支平衡点的关系进行外部设备管理,从而拓展了EODSA和IEODSA1动态电源管理策略的适用范围.实验结果表明,SEBDSP比EODSA的平均功耗降低31.94%,比IEODSA1的平均功耗降低4.95%.
In order to reduce the energy consumption of embedded systems,a subtask and executing time-based device scheduling policy(SEBDSP) was proposed by analyzing the drawbacks of EODSA(the energy-optimal device-scheduling algorithm) and IEODSA1(the improved EODSA1).The SEBDSP divides tasks into several sub-tasks and manages I/O(input/output) devices in light of the executing time of the subtasks and the break-even points of the devices to extend the application area of the EODSA and the IEODSA1.The experimental results show that the average power consumption is respectively 31.94% and 4.95% lower with the proposed policy than with the EODSA and the IEODSA1.
出处
《西南交通大学学报》
EI
CSCD
北大核心
2010年第3期435-439,共5页
Journal of Southwest Jiaotong University
基金
上海市科委科研计划项目(052207046)
关键词
动态电源管理
子任务执行时间
SEBDSP
收支平衡点
dynamic power management
subtask executing time
SEBDSP(subtask and executing time-based device-scheduling policy)
break-even point