文章基本信息

标题：An Energy-efficient Task Scheduler in Virtualized Cloud Platforms
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作者：Dongbo Liu ; Ning Han
期刊名称：International Journal of Grid and Distributed Computing
印刷版ISSN：2005-4262
出版年度：2014
卷号：7
期号：3
页码：123-134
DOI：10.14257/ijgdc.2014.7.3.12
出版社：SERSC
摘要：In cloud platforms, virtualization technology has been widely applied for deploying large- scale IT-infrastructures due to its flexibility and extendibility. However, the extra software layer introduced by virtualization technology also raises many performance issues. One of them is the energy-efficiency losses when massive I/O-intensive tasks are running on virtualized servers. In this paper, we present a novel virtual machine scheduling approach, which the scheduler allows virtual machines to obtain extra CPU shares if they were frequently blocked by I/O interrupted recently. In this way, I/O-intensive tasks will have more chances of being scheduled so as to compensate their performance losses caused by I/O operations. Extensive experiments are conducted by using various benchmarks, and the results show that the proposed policy outperforms existing scheduling algorithm in the term of energy-efficiency especially when the virtualized system is in presence of intensive mixed- workloads.
关键词：Cloud Computing; Resource Virtualization; Task Scheduling; Virtual Machine