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The concurrent consideration of uncertainty in WCETs and processor speeds in mixed-criticality systems

Authors:

Sanjoy BaruahAuthors Info & Claims

RTNS '15: Proceedings of the 23rd International Conference on Real Time and Networks Systems

Pages 247 - 256

https://doi.org/10.1145/2834848.2834852

Published: 04 November 2015 Publication History

Abstract

Most prior work on mixed-criticality (MC) scheduling has focused on a model in which multiple WCET parameters are specified for each job, the interpretation being that the larger values represent "safer" estimates of the job's true WCET. More recently, a different MC model has been studied in which it is assumed that the precise speed of the processor upon which the system is implemented varies in an a priori unknown manner during runtime, and estimates must be made about how low the actual speed may fall.

The research reported in this paper seeks to integrate the varying-speed MC model and the multi-WCET one into a unified framework. A general model is proposed in which each job may have multiple WCETs specified, and the precise speed of the processor upon which the system is implemented may vary during run-time. We reinterpreted the key idea behind the table-driven MC scheduling scheme proposed in one of our recent work, and provide a more efficient algorithm named LE-EDF. This algorithm strictly generalizes algorithms that were previously separately proposed for MC scheduling of systems with multiple WCETs as well as for MC scheduling on variable-speed processors. It is shown that LE-EDF outperforms (via simulation) and/or dominates existing algorithms (under theoretical proof). LE-EDF is also compared with optimal clairvoyant algorithm using the metric of speedup factor.

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Cited By

She TGuo ZYang K(2022)Scheduling Constrained-Deadline Tasks in Precise Mixed-Criticality Systems on a Varying-Speed ProcessorProceedings of the 30th International Conference on Real-Time Networks and Systems10.1145/3534879.3534897(94-102)Online publication date: 7-Jun-2022
https://dl.acm.org/doi/10.1145/3534879.3534897
She TVaidhun SGu QDas SGuo ZYang K(2021)Precise Scheduling of Mixed-Criticality Tasks on Varying-Speed MultiprocessorsProceedings of the 29th International Conference on Real-Time Networks and Systems10.1145/3453417.3453428(134-143)Online publication date: 7-Apr-2021
https://dl.acm.org/doi/10.1145/3453417.3453428
Choi HKim HZhu Q(2021)Toward Practical Weakly Hard Real-Time Systems: A Job-Class-Level Scheduling ApproachIEEE Internet of Things Journal10.1109/JIOT.2021.30582158:8(6692-6708)Online publication date: 15-Apr-2021
https://doi.org/10.1109/JIOT.2021.3058215
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The concurrent consideration of uncertainty in WCETs and processor speeds in mixed-criticality systems
1. Computer systems organization
  1. Embedded and cyber-physical systems

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cover image ACM Other conferences

RTNS '15: Proceedings of the 23rd International Conference on Real Time and Networks Systems

November 2015

320 pages

ISBN:9781450335911

DOI:10.1145/2834848

General Chair:
Julien Forget
Université de Lille, France

Copyright © 2015 ACM.

Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Publication History

Published: 04 November 2015

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RTNS '15

RTNS '15: 23rd International Conference on Real-Time Networks and Systems

November 4 - 6, 2015

Lille, France

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Cited By

She TGuo ZYang K(2022)Scheduling Constrained-Deadline Tasks in Precise Mixed-Criticality Systems on a Varying-Speed ProcessorProceedings of the 30th International Conference on Real-Time Networks and Systems10.1145/3534879.3534897(94-102)Online publication date: 7-Jun-2022
https://dl.acm.org/doi/10.1145/3534879.3534897
She TVaidhun SGu QDas SGuo ZYang K(2021)Precise Scheduling of Mixed-Criticality Tasks on Varying-Speed MultiprocessorsProceedings of the 29th International Conference on Real-Time Networks and Systems10.1145/3453417.3453428(134-143)Online publication date: 7-Apr-2021
https://dl.acm.org/doi/10.1145/3453417.3453428
Choi HKim HZhu Q(2021)Toward Practical Weakly Hard Real-Time Systems: A Job-Class-Level Scheduling ApproachIEEE Internet of Things Journal10.1109/JIOT.2021.30582158:8(6692-6708)Online publication date: 15-Apr-2021
https://doi.org/10.1109/JIOT.2021.3058215
Yang KBhuiyan AGuo ZXie Y(2020)F2VDProceedings of the 39th International Conference on Computer-Aided Design10.1145/3400302.3415716(1-9)Online publication date: 2-Nov-2020
https://dl.acm.org/doi/10.1145/3400302.3415716
Bhuiyan ALiu DKhan ASaifullah AGuan NGuo Z(2020)Energy-Efficient Parallel Real-Time Scheduling on Clustered Multi-CoreIEEE Transactions on Parallel and Distributed Systems10.1109/TPDS.2020.298570131:9(2097-2111)Online publication date: 1-Sep-2020
https://doi.org/10.1109/TPDS.2020.2985701
Bhuiyan ASruti SGuo ZYang KErmont JSong YGill C(2019)Precise scheduling of mixed-criticality tasks by varying processor speedProceedings of the 27th International Conference on Real-Time Networks and Systems10.1145/3356401.3356410(123-132)Online publication date: 6-Nov-2019
https://dl.acm.org/doi/10.1145/3356401.3356410
Choi HKim HZhu Q(2019)Job-Class-Level Fixed Priority Scheduling of Weakly-Hard Real-Time Systems2019 IEEE Real-Time and Embedded Technology and Applications Symposium (RTAS)10.1109/RTAS.2019.00028(241-253)Online publication date: Apr-2019
https://doi.org/10.1109/RTAS.2019.00028
Guo ZBhuiyan ALiu DKhan ASaifullah AGuan N(2019)Energy-Efficient Real-Time Scheduling of DAGs on Clustered Multi-Core Platforms2019 IEEE Real-Time and Embedded Technology and Applications Symposium (RTAS)10.1109/RTAS.2019.00021(156-168)Online publication date: Apr-2019
https://doi.org/10.1109/RTAS.2019.00021
Guo ZYang KVaidhun SArefin SDas SXiong H(2018)Uniprocessor Mixed-Criticality Scheduling with Graceful Degradation by Completion Rate2018 IEEE Real-Time Systems Symposium (RTSS)10.1109/RTSS.2018.00052(373-383)Online publication date: Dec-2018
https://doi.org/10.1109/RTSS.2018.00052
Santinelli LGuo Z(2018)A Sensitivity Analysis for Mixed Criticality: Trading Criticality with Computational Resource2018 IEEE 23rd International Conference on Emerging Technologies and Factory Automation (ETFA)10.1109/ETFA.2018.8502493(313-320)Online publication date: Sep-2018
https://doi.org/10.1109/ETFA.2018.8502493
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