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arXiv 2109.09415cs.DCcs.NI
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边缘计算中分布式计算卸载的架构与性能评估

Architecture and Performance Evaluation of Distributed Computation Offloading in Edge Computing

Claudio Cicconetti, Marco Conti, Andrea Passarella

摘要:

边缘计算是一种新兴的范例,可以实现低延迟应用程序,如移动增强现实,因为它在更接近用户的处理设备上进行计算。另一方面,云系统对无状态任务的高度可扩展执行的需求正在推动基于无服务器计算的新技术的定义。在本文中,我们提出了一种新的架构,其中两个收敛,使低延迟的应用程序:这是通过卸载短期无状态任务从用户终端到边缘节点。此外,我们设计了一个分布式算法,解决了选择最佳执行器的研究挑战,基于实时测量和简单,但有效的预测算法。最后,我们描述了一个新的性能评估框架,专门设计用于精确评估边缘计算环境中的算法和协议,其中节点可能具有非常异构的网络和处理能力。所提出的框架依赖于使用真实的组件与模拟计算混合的轻量级虚拟化,非常适合于几个应用程序和网络环境的分析。使用我们的框架,我们在小型和大型边缘计算场景中评估了我们提出的架构和算法,表明我们的解决方案实现了与集中式解决方案相似或更好的延迟性能,网络利用率要低得多。

英文摘要:

Edge computing is an emerging paradigm to enable low-latency applications, like mobile augmented reality, because it takes the computation on processing devices that are closer to the users. On the other hand, the need for highly scalable execution of stateless tasks for cloud systems is driving the definition of new technologies based on serverless computing. In this paper, we propose a novel architecture where the two converge to enable low-latency applications: this is achieved by offloading short-lived stateless tasks from the user terminals to edge nodes. Furthermore, we design a distributed algorithm that tackles the research challenge of selecting the best executor, based on real-time measurements and simple, yet effective, prediction algorithms. Finally, we describe a new performance evaluation framework specifically designed for an accurate assessment of algorithms and protocols in edge computing environments, where the nodes may have very heterogeneous networking and processing capabilities. The proposed framework relies on the use of real components on lightweight virtualization mixed with simulated computation and is well-suited to the analysis of several applications and network environments. Using our framework, we evaluate our proposed architecture and algorithms in small- and large-scale edge computing scenarios, showing that our solution achieves similar or better delay performance than a centralized solution, with far less network utilization.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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