解构Amazon EC2现货实例定价

2011 IEEE Third International Conference on Cloud Computing Technology and Science Pub Date : 2011-11-29 DOI:10.1145/2509413.2509416

Orna Agmon Ben-Yehuda, Muli Ben-Yehuda, A. Schuster, Dan Tsafrir

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引用次数: 436

摘要

拥有大量备用容量的云提供商必须要么激励客户购买，要么遭受损失。亚马逊是第一家解决这一挑战的云提供商，它允许客户对闲置容量进行投标，并在出价超过定期变化的现货价格时将资源授予投标人。亚马逊公布了现货价格，但没有透露是如何确定的。通过分析亚马逊EC2云的现货价格历史，我们对价格是如何设定的进行了逆向工程，并构建了一个模型，该模型生成的价格与现有的价格轨迹一致。我们发现，价格通常不像以前认为的那样是由市场驱动的。相反，它们通常是通过动态隐藏储备价格在一个狭窄的价格区间内随机产生的。我们的模型可以帮助客户做出明智的出价，云提供商设计有利可图的系统，研究人员设计定价算法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Deconstructing Amazon EC2 Spot Instance Pricing

Cloud providers possessing large quantities of spare capacity must either incentivize clients to purchase it or suffer losses. Amazon is the first cloud provider to address this challenge, by allowing clients to bid on spare capacity and by granting resources to bidders while their bids exceed a periodically changing spot price. Amazon publicizes the spot price but does not disclose how it is determined. By analyzing the spot price histories of Amazon's EC2 cloud, we reverse engineer how prices are set and construct a model that generates prices consistent with existing price traces. We find that prices are usually not market-driven as sometimes previously assumed. Rather, they are typically generated at random from within a tight price interval via a dynamic hidden reserve price. Our model could help clients make informed bids, cloud providers design profitable systems, and researchers design pricing algorithms.

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2011 IEEE Third International Conference on Cloud Computing Technology and Science

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