Evaluation of the overheads and latencies of a virtualized RTOS

Evaluation of the overheads and latencies of a virtualized RTOS
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评估虚拟化 RTOS 的开销和延迟

DOI:
10.1109/sies.2013.6601475
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发表时间:
2013
期刊:
2013 8th IEEE International Symposium on Industrial Embedded Systems (SIES)
影响因子:
--
通讯作者:
F. Nouvel
F. Nouvel
中科院分区:
--
文献类型:
--
作者:
Mehdi Aïchouch;Jean;F. Nouvel

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虚拟化技术已经成为实时嵌入式系统领域的一个流行趋势。例如,在汽车行业,从业者目前正在考虑使用这种技术同时运行AUTOSAR实时操作系统(RTOS)进行实时编程,以及Linux-GENIVI操作系统来支持同一电子控制单元上的车载信息娱乐应用程序。然而,在虚拟机而不是裸金属硬件内运行实时操作系统可能在时间和开销方面具有显著的成本。这就提出了一个问题,即与运行在真实的机器上的单个RTOS相比,虚拟化RTOS的开销和延迟的数量级。在本文中,提出了一个虚拟化的RTOS的延迟和开销的评估,以观察虚拟化如何影响这些时序特性。我们的实验表明,虚拟化RTOS的开销和延迟与在裸金属硬件上运行的相同RTOS中获得的那些竞争。
The virtualization technique has become a popular trend in the domain of real-time embedded systems. For example, in the automotive industry, practitioners are currently considering the idea of using such technique to run simultaneously the AUTOSAR real-time operating system (RTOS) for real-time programming, and the Linux-GENIVI operating system to support in-vehicle infotainment applications on the same Electronic Control Unit. However, running a real-time operating system inside a virtual machine instead of a bare metal hardware may have a significant cost in terms of latencies and overheads. This raises the question of the order-of-magnitude of a virtualized RTOS's overheads and latencies in comparison to a single RTOS running on a real machine. In this paper, an evaluation of a virtualized RTOS's latencies and overheads is proposed in order to observe how virtualization impacts these timing characteristics. Our experiments demonstrate that the overheads and latencies of a virtualized RTOS compete with those obtained in the same RTOS running on bare-metal hardware.
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