License: Creative Commons Attribution 3.0 Unported license (CC BY 3.0)
When quoting this document, please refer to the following
DOI: 10.4230/LIPIcs.ECRTS.2018.5
URN: urn:nbn:de:0030-drops-89999
URL: http://dagstuhl.sunsite.rwth-aachen.de/volltexte/2018/8999/
Agrawal, Kunal ;
Baruah, Sanjoy
A Measurement-Based Model for Parallel Real-Time Tasks
Abstract
Under the federated paradigm of multiprocessor scheduling, a set of processors is reserved for the exclusive use of each real-time task. If tasks are characterized very conservatively (as is typical in safety-critical systems), it is likely that most invocations of the task will have computational demand far below the worst-case characterization, and could have been scheduled correctly upon far fewer processors than were assigned to it assuming the worst-case characterization of its run-time behavior. Provided we could safely determine during run-time when all the processors are going to be needed, for the rest of the time the unneeded processors could be idled in low-energy "sleep" mode, or used for executing non-real time work in the background. In this paper we propose a model for representing parallelizable real-time tasks in a manner that permits us to do so. Our model does not require us to have fine-grained knowledge of the internal structure of the code represented by the task; rather, it characterizes each task by a few parameters that are obtained by repeatedly executing the code under different conditions and measuring the run-times.
BibTeX - Entry
@InProceedings{agrawal_et_al:LIPIcs:2018:8999,
author = {Kunal Agrawal and Sanjoy Baruah},
title = {{A Measurement-Based Model for Parallel Real-Time Tasks}},
booktitle = {30th Euromicro Conference on Real-Time Systems (ECRTS 2018)},
pages = {5:1--5:19},
series = {Leibniz International Proceedings in Informatics (LIPIcs)},
ISBN = {978-3-95977-075-0},
ISSN = {1868-8969},
year = {2018},
volume = {106},
editor = {Sebastian Altmeyer},
publisher = {Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik},
address = {Dagstuhl, Germany},
URL = {http://drops.dagstuhl.de/opus/volltexte/2018/8999},
URN = {urn:nbn:de:0030-drops-89999},
doi = {10.4230/LIPIcs.ECRTS.2018.5},
annote = {Keywords: multiprocessor federated scheduling, parallel tasks, work and span, mixed criticality}
}
Keywords: |
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multiprocessor federated scheduling, parallel tasks, work and span, mixed criticality |
Collection: |
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30th Euromicro Conference on Real-Time Systems (ECRTS 2018) |
Issue Date: |
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2018 |
Date of publication: |
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22.06.2018 |