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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Yifan Wu Bertogna, M. |
| Copyright Year | 2009 |
| Description | Author affiliation: Scuola Superiore S.Anna, Pisa, Italy (Yifan Wu; Bertogna, M.) |
| Abstract | The optimality of preemptive EDF scheduling with relation to the achievable system utilization is a clear advantage of this scheduling policy for single processor real-time systems. However, recent works suggested that the run-time behavior of EDF might be improved by limiting the preemption support only to particular time instants, dividing each task into a sequence of non-preemptive chunks of execution, without affecting the schedulability of the system. In this paper, we will take a closer look to limited preemption EDF scheduling (LP-EDF), evaluating the potential advantages offered by this policy in terms of response-time reduction and improved control performances. In particular, we will show how to increase the responsiveness of a control application by placing non-preemptive regions of maximal length at the end of the code of selected tasks. The effectiveness of the proposed method will be proved both analytically and by extensive simulations. |
| Starting Page | 1 |
| Ending Page | 8 |
| File Size | 399501 |
| Page Count | 8 |
| File Format | |
| ISBN | 9781424427277 |
| ISSN | 19460759 |
| DOI | 10.1109/ETFA.2009.5347049 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2009-09-22 |
| Publisher Place | Spain |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Delay Processor scheduling Scheduling algorithm Algorithm design and analysis Control systems Timing Concrete Runtime Performance evaluation Analytical models |
| Content Type | Text |
| Resource Type | Article |
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