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Risk-aware limited lookahead control for dynamic resource provisioning in enterprise computing systems

机译:用于企业计算系统中的动态资源供应的风险感知的有限超前控制

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摘要

Utility or on-demand computing, a provisioning model where a service provider makes computing infrastructure available to customers as needed, is becoming increasingly common in enterprise computing systems. Realizing this model requires making dynamic, and sometimes risky, resource provisioning and allocation decisions in an uncertain operating environment to maximize revenue while reducing operating cost. This paper develops an optimization framework wherein the resource provisioning problem is posed as one of sequential decision making under uncertainty and solved using a limited lookahead control scheme. The proposed approach accounts for the switching costs incurred during resource provisioning and explicitly encodes risk in the optimization problem. Simulations using workload traces from the Soccer World Cup 1998 web site show that a computing system managed by our controller generates up to 20% more profit than a system without dynamic control while incurring low control overhead.
机译:效用或按需计算是一种配置模型,服务提供商在该模型中根据需要将计算基础结构提供给客户,在企业计算系统中正变得越来越普遍。要实现此模型,需要在不确定的运营环境中做出动态的,有时有风险的资源供应和分配决策,以在降低运营成本的同时最大化收入。本文开发了一种优化框架,其中资源供应问题被视为不确定性下的顺序决策之一,并使用有限的超前控制方案加以解决。所提出的方法解决了资源供应期间发生的转换成本,并在优化问题中明确地编码了风险。使用来自1998年世界杯足球赛网站的工作负载跟踪进行的模拟显示,与没有动态控制的系统相比,由我们的控制器管理的计算系统产生的利润最多可提高20%,而控制开销却很小。

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