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Pricing the spare bandwidth: towards maximizing data center’s profit

通过对剩余带宽计费, 最大化数据中心利润

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Abstract

To provide tenants with predictable network performance, tenants are allowed to purchase specified amount of data center network (DCN) resources (e.g., bandwidth). Then, data center will reserve the purchased resources for the corresponding tenants. Meanwhile, some DCNs are work conserving, which means that the spare bandwidth will be fairly shared by all active tenants. Even though the amount of the spare bandwidth is stochastic and uncertain, DCN providers are not likely to give away it for free. Thus, data center with work conserving may impose extra payment on tenants for using the spare bandwidth. In this paper, we propose a suitable tariff to charge for the usages of DCN resources, which includes a bill for the usage of the spare bandwidth. Through theoretical analysis and simulation, we demonstrate that our tariff can incentivize tenants to adjust their purchases of bandwidths, which can lead to the improvement of data center’s profit by 27.4% without impairing the social welfare.

摘要

创新点

  1. 1.

    提出了一种新型的数据中心网络用户效能建模方式。 这种建模方式不仅考虑到了用户数据发送速率, 也考虑到了用户带宽需求被完全满足的概率。

  2. 2.

    分析了在可获得的剩余带宽为随机变量的情况下, 数据中心网络用户最优的预留带宽购买量。 我们分别展示了数据中心网络用户最优的预留带宽购买量和效用因子, 可获得的剩余带宽量, 以及对带宽计费方式的关系。

  3. 3.

    通过理论分析和仿真测试, 我们证明我们提出的计费机制能够在不损失社会福利的前提下, 有效地提高数据中心网络的利润。

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Authors and Affiliations

  1. School of Communication & Information Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China

    Yong Zhan, Du Xu & Hongfang Yu

Authors
  1. Yong Zhan
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  2. Du Xu
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  3. Hongfang Yu
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Correspondence to Du Xu.

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Zhan, Y., Xu, D. & Yu, H. Pricing the spare bandwidth: towards maximizing data center’s profit. Sci. China Inf. Sci. 59, 102303 (2016). https://doi.org/10.1007/s11432-016-0355-0

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  • DOI: https://doi.org/10.1007/s11432-016-0355-0

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