期刊
IEEE TRANSACTIONS ON COMPUTERS
卷 64, 期 7, 页码 2049-2059出版社
IEEE COMPUTER SOC
DOI: 10.1109/TC.2014.2349510
关键词
Data center; cost minimization; request mapping; dynamic voltage frequency scaling
资金
- Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) [CUG140615]
- NSERC Discovery grant (Canada)
- Serbian Ministry of Science and Education [TR32016]
- Singidunum University, Serbia
With the rising demands on cloud services, the electricity consumption has been increasing drastically as the main operational expenditure (OPEX) to data center providers. The geographical heterogeneity of electricity prices motivates us to study the task placement problem over geo-distributed data centers. We exploit the dynamic frequency scaling technique and formulate an optimization problem that minimizes OPEX while guaranteeing the quality-of-service, i.e., the expected response time of tasks. Furthermore, an optimal solution is discovered for this formulated problem. The experimental results show that our proposal achieves much higher cost-efficiency than the traditional resizing scheme, i.e., by activating/deactivating certain servers in data centers.
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