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On Benchmarking the Predictability of Real-Time Mechanisms in User and Kernel Spaces for Real-Time Embedded Linux

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Computer Applications for Security, Control and System Engineering

Part of the book series: Communications in Computer and Information Science ((CCIS,volume 339))

Abstract

Benchmarking the response time of real-time mechanisms is a good measure for predicting the performance of real-time systems. We report on analysis results obtained by comparing the response characteristics of real-time mechanisms in the kernel space to those in the user space for real-time embedded Linux: RTAI and Xenomai. Evaluations were performed on a semaphore, real-time FIFO, and Mailbox and Message queue. The periodicity of tasks was relatively consistent in the kernel space and Xenomai performed better than RTAI in the user space. For real-time mechanisms, the response times in the kernel space were better at low latencies. In Xenomai, the semaphore showed a good response time in both the kernel and user space, but real-time FIFO in RTAI showed a faster response. These results are promising for the estimation of deterministic real-time task execution to implement real-time systems using real-time embedded Linux.

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Author information

Authors and Affiliations

  1. Dept. of Electrical and Information Engineering, Seoul National University of Science and Technology, Seoul, South Korea

    Jae Hwan Koh & Byoung Wook Choi

Authors
  1. Jae Hwan Koh
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  2. Byoung Wook Choi
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Editor information

Editors and Affiliations

  1. GVSA and University of Tasmania, 20 Virginia Court, Hobart, TAS, Australia

    Tai-hoon Kim

  2. Jet Propulsion Laboratory/Caltech, NASA, 4800 Oak Grove Drive, 91109, Pasadena, CA, USA

    Adrian Stoica

  3. National Chiao Tung University, Hsinchu, Taiwan, R.O.C.

    Wai-chi Fang

  4. University of Western Macedonia, Kozani, Greece

    Thanos Vasilakos

  5. Universidad Complutense de Madrid, 28040, Madrid, Spain

    Javier García Villalba

  6. Mississippi State University, Mississippi State, MS, USA

    Kirk P. Arnett

  7. King Saud University, Riyadh, Kingdom of Saudi Arabia

    Muhammad Khurram Khan

  8. School of Computing and Information System, University of Tasmania, Churchill Avenue, Sandy Bay, Hobart, TAS, Australia

    Byeong-Ho Kang

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© 2012 Springer-Verlag Berlin Heidelberg

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Koh, J.H., Choi, B.W. (2012). On Benchmarking the Predictability of Real-Time Mechanisms in User and Kernel Spaces for Real-Time Embedded Linux. In: Kim, Th., et al. Computer Applications for Security, Control and System Engineering. Communications in Computer and Information Science, vol 339. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-35264-5_29

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  • DOI: https://doi.org/10.1007/978-3-642-35264-5_29

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-35263-8

  • Online ISBN: 978-3-642-35264-5

  • eBook Packages: Computer ScienceComputer Science (R0)

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