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A lightweight virtualization model to enable edge computing in deeply embedded systems
Software: Practice and Experience ( IF 3.5 ) Pub Date : 2021-03-18 , DOI: 10.1002/spe.2968
Ramão T. Tiburski 1, 2 , Carlos R. Moratelli 3 , Sérgio F. Johann 1 , Everton Matos 4 , Fabiano Hessel 1
Affiliation  

Edge computing paradigm enables moving Internet of Things (IoT) applications from the Cloud to the edge of the network. Modern software engineering approaches are adhering to microservices to enable the deployment of such applications on edge devices. Microservices consist of the disaggregation of an application into smaller pieces that operate independently. Recent works have explored microservices packaged into containers and advocate that containers result in a reduced footprint and avoid the unwanted overhead caused by traditional virtualization. However, containers cannot be used in many deeply embedded systems (DES) due to an underlying operating system's (OSs) requirement. DES are edge devices with minimal resources regarding storage, memory, and processing power. Thus, they cannot afford large and sophisticated OSs. This article presents the Hellfire hypervisor, a lightweight virtualization implementation that enables separation and improves security in IoT applications on DES. Our proposal simplifies the traditional hypervisor approach and reaches devices where the existing techniques fail. The results show that the proposed model has a small footprint of 23 KB while keeping a low average virtualization overhead of 0.62% for multiple virtual machines execution.

中文翻译:

一种轻量级虚拟化模型,可在深度嵌入式系统中实现边缘计算

边缘计算范式支持将物联网 (IoT) 应用程序从云迁移到网络边缘。现代软件工程方法坚持使用微服务,以在边缘设备上部署此类应用程序。微服务包括将应用程序分解为独立运行的较小部分。最近的工作探索了封装到容器中的微服务,并主张容器可以减少占用空间并避免传统虚拟化带来的不必要的开销。但是,由于底层操作系统 (OS) 的要求,容器无法在许多深度嵌入式系统 (DES) 中使用。DES 是具有最少存储、内存和处理能力资源的边缘设备。因此,他们负担不起大型和复杂的操作系统。本文介绍了 Hellfire 管理程序,这是一种轻量级虚拟化实现,可在 DES 上实现物联网应用的分离并提高安全性。我们的提议简化了传统的管理程序方法,并覆盖了现有技术失败的设备。结果表明,所提出的模型占用空间小,仅为 23 KB,同时为多个虚拟机执行保持 0.62% 的低平均虚拟化开销。
更新日期:2021-03-18
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