Advertisement

Fault-Tolerant Scheduling Based on Periodic Tasks for Heterogeneous Systems

  • Wei Luo
  • Fumin Yang
  • Liping Pang
  • Xiao Qin
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4158)

Abstract

Most existing real-time fault-tolerant scheduling algorithms for heterogeneous distributed systems can achieve high reliability for non-preemptive and aperiodic tasks. However, the existing scheduling algorithms assume that status of each backup copy is either active or passive. To remedy this deficiency, we propose a novel reliability model tailored for preemptive periodic tasks. Next, we develop two real-time fault-tolerant algorithms (NRFTAHS and RDFTAHS) for heterogeneous distributed systems. NRFTAHS manages to assign tasks in a way to improve system schedulabilties, whereas RDFTAHS aims at boosting system reliability without adding extra hardware. Unlike the existing scheduling schemes, our algorithms consider backup copies in both active and passive forms. Therefore, our approaches are more flexible than the alternative ones. Finally, we quantitatively compare our schemes with two existing algorithms in terms of performability measured as a function of schedulability and reliability. Experiments results show that RDFTAHS substantially improves the overall performance over NRFTAH.

Keywords

Schedule Algorithm Heterogeneous System Primary Copy Periodic Task Aperiodic Task 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Ranaweera, S., Agrawal, D.P.: Scheduling of Periodic Time Critical Applications for Pipelined Execution on Heterogeneous Systems. In: Proceeding of the 2001 International Conference on Parallel Processing, Spain (2001)Google Scholar
  2. 2.
    Srinivasan, S., Jha, N.K.: Safety and Reliability Driven Tasks Allocation in distributed Systems. IEEE Trans. Parallel and distributed systems 10, 238–251 (1999)CrossRefGoogle Scholar
  3. 3.
    Dogan, A., Ozguner, F.: Reliable matching and scheduling of precedence-constrained tasks in heterogeneous distributed computing. In: Proceeding of 29th International Conference on Parallel Processing, Spain (2001)Google Scholar
  4. 4.
    Yang, C.H., Deconinck, G., Gui, W.H.: Fault-tolerant scheduling for real-time embedded control systems. Journal of Computer Science and Technology 19, 191–202 (2004)CrossRefMathSciNetGoogle Scholar
  5. 5.
    Liu, H., Fei, S.M.: A Fault-Tolerant Scheduling Algorithm Based on EDF for Distributed Control Systems. Chinese Journal of Computers 14, 1371–1378 (2003)MATHGoogle Scholar
  6. 6.
    Omari, R.A.l., Somani, A.K., Manimaran, G.: An adaptive scheme for fault-tolerant scheduling of soft real-time tasks in multiprocessor systems. Journal of Parallel and Distributed Computing 65, 595–608 (2005)MATHCrossRefGoogle Scholar
  7. 7.
    Bertossi, A.A., Mancini, L.V., Rossini, F.: Fault-tolerant rate-monotonic first-fit scheduling in hard-real-time systems. IEEE Trans. Parallel and Distributed Systems 10, 934–945 (1999)CrossRefGoogle Scholar
  8. 8.
    Qin, X., Han, Z.F., Pang, L.P.: Towards Real-time Scheduling with Fault-tolerance in Heterogeneous Distributed Systems. Chinese Journal of Computers 25, 121–124 (2002)MathSciNetGoogle Scholar
  9. 9.
    Qin, X., Hong, J.: Dynamic, Reliability-driven Scheduling of Parallel Real-time Jobs in Heterogeneous Systems. In: Proceeding of the 2001 International Conference on Parallel Processing, Spain (2001)Google Scholar
  10. 10.
    Qin, X., Hong, J., David, R.S.: An Efficient Fault-tolerant Scheduling Algorithm for Real-time Tasks with Precedence Constraints in Heterogeneous Systems. In: Proceeding of the 31st International Conference on Parallel Processing (ICPP), Canada (2002)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Wei Luo
    • 1
  • Fumin Yang
    • 1
  • Liping Pang
    • 1
  • Xiao Qin
    • 2
  1. 1.School of Computer ScienceHuaZhong University of Science and TechnologyWuhanP.R. China
  2. 2.Department of Computer ScienceNew Mexico Institute of Mining and TechnologySocorroUSA

Personalised recommendations