论文标题
云计算中的延迟和价格差异：服务模型，支持体系结构和性能
Delay and Price Differentiation in Cloud Computing: A Service Model, Supporting Architectures, and Performance
论文作者
论文摘要
许多云服务提供商（CSP）以较小的延迟提供按需服务。我们提出了一个QoS分化的模型，其中多个SLA为关键潜伏用户提供按需服务，以及以较低价格的延迟耐受性用户的延迟服务。两种体系结构被认为可以实现SLA。第一个基于优先级队列。第二个简单地将服务器分为多个模块，每个模块一个SLA。作为一个生态系统，我们表明所提出的框架是兼容的激励措施。尽管第一个体系结构在文献中似乎更为普遍，但我们证明了第二架体系结构的优越性，在该文献中，我们进一步利用排队理论来确定最佳的SLA延迟和价格。最后，通过与按需服务的数值比较来验证拟议框架的可行性，并将收入的提高超过200％。我们的结果可以帮助CSP设计最佳的延迟分化服务，并选择适当的服务体系结构。
Many cloud service providers (CSPs) provide on-demand service at a price with a small delay. We propose a QoS-differentiated model where multiple SLAs deliver both on-demand service for latency-critical users and delayed services for delay-tolerant users at lower prices. Two architectures are considered to fulfill SLAs. The first is based on priority queues. The second simply separates servers into multiple modules, each for one SLA. As an ecosystem, we show that the proposed framework is dominant-strategy incentive compatible. Although the first architecture appears more prevalent in the literature, we prove the superiority of the second architecture, under which we further leverage queueing theory to determine the optimal SLA delays and prices. Finally, the viability of the proposed framework is validated through numerical comparison with the on-demand service and it exhibits a revenue improvement in excess of 200%. Our results can help CSPs design optimal delay-differentiated services and choose appropriate serving architectures.
