A survey on shared disk I/O management in virtualized environments under real time constraints

Author:

Sañudo Ignacio1,Cavicchioli Roberto1,Capodieci Nicola1,Valente Paolo1,Bertogna Marko1

Affiliation:

1. University of Modena and Reggio Emilia

Abstract

In the embedded systems domain, hypervisors are increasingly being adopted to guarantee timing isolation and appropriate hardware resource sharing among different software components. However, managing concurrent and parallel requests to shared hardware resources in a predictable way still represents an open issue. We argue that hypervisors can be an effective means to achieve an efficient and predictable arbitration of competing requests to shared devices in order to satisfy real-time requirements. As a representative example, we consider the case for mass storage (I/O) devices like Hard Disk Drives (HDD) and Solid State Disks (SSD), whose access times are orders of magnitude higher than those of central memory and CPU caches, therefore having a greater impact on overall task delays. We provide a comprehensive and up-to-date survey of the literature on I/O management within virtualized environments, focusing on software solutions proposed in the open source community, and discussing their main limitations in terms of realtime performance. Then, we discuss how the research in this subject may evolve in the future, highlighting the importance of techniques that are focused on scheduling not uniquely the processing bandwidth, but also the access to other important shared resources, like I/O devices.

Publisher

Association for Computing Machinery (ACM)

Subject

Engineering (miscellaneous),Computer Science (miscellaneous)

Cited by 4 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Investigating Machine Learning Algorithms for Modeling SSD I/O Performance for Container-Based Virtualization;IEEE Transactions on Cloud Computing;2021-07-01

2. Latency Analysis of I/O Virtualization Techniques in Hypervisor-Based Real-Time Systems;2021 IEEE 27th Real-Time and Embedded Technology and Applications Symposium (RTAS);2021-05

3. A Thread Level SLO-Aware I/O Framework for Embedded Virtualization;IEEE Transactions on Parallel and Distributed Systems;2021-03-01

4. The Key Role of Memory in Next-Generation Embedded Systems for Military Applications;Advances in Intelligent Systems and Computing;2019-03-19

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