Datacenters have become a significant source of traffic, much of which is carried over private networks. The operators of those networks commonly have access to detailed traffic profiles and performance goals, which they seek to meet as efficiently as possible. Of interest are solutions for offering latency guarantees while minimizing the required network bandwidth. Of particular interest is the extent to which traffic (re)shaping can be of benefit. The paper focuses on the most basic network configuration, namely, a single node, single link network, with extensions to more general, multi-node networks discussed in a companion paper. The main results are in the form of optimal solutions for different types of schedulers of varying complexity, and therefore cost. The results demonstrate how judicious traffic shaping can help lower complexity schedulers reduce the bandwidth they require, often performing as well as more complex ones.

翻译：数据中心已成为交通的一个重要来源,其中大多通过私人网络传送,这些网络的运营商通常能够获得详细的交通概况和业绩目标,他们力求尽可能有效地满足这些目标。感兴趣的是提供长期保障,同时尽量减少所需的网络带宽的解决方案。特别令人感兴趣的是,通信(再)分层能在多大程度上产生效益。本文侧重于最基本的网络配置,即单一节点、单一连接网络,扩展至在配套文件中讨论的更一般的多节点网络。主要结果表现为对不同类型复杂程度不同的调度员提供最佳解决方案,因此成本很高。结果显示,明智的交通定型能够帮助降低复杂程度的调度员减少所需的带宽,而且往往同时减少更复杂的带宽。