Online Speed Scaling Based on Active Job Count to Minimize Flow Plus Energy
Online Speed Scaling Based on Active Job Count to Minimize Flow Plus Energy
复制标题
基于活动作业计数的在线速度扩展,以最大限度地减少流量和能源
DOI:
10.1007/s00453-012-9613-y
复制
发表时间:
2012
期刊:
影响因子:
1.1
通讯作者:
Lam T
中科院分区:
文献类型:
--
作者:
Lam T
This paper is concerned with online scheduling algorithms that aim at minimizing the total flow time plus energy usage. The results are divided into two parts. First, we consider the well-studied “simple” speed scaling model and show how to analyze a speed scaling algorithm (called AJC) that changes speed discretely. This is in contrast to the previous algorithms which change the speed continuously. More interestingly, AJC admits a better competitive ratio, and without using extra speed. In the second part, we extend the study to a more general speed scaling model where the processor can enter a sleep state to further save energy. A new sleep management algorithm called IdleLonger is presented. This algorithm, when coupled with AJC, gives the first competitive algorithm for minimizing total flow time plus energy in the general model.
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