Analyzing GEDF Scheduling for Parallel Real-Time Tasks with Arbitrary Deadlines

Xu Jiang, Nan Guan, Di Liu, Weichen Liu

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

3 Citations (Scopus)

Abstract

Real-time and embedded systems are shifting from single-core to multi-core processors, on which software must be parallelized to fully utilize the computation capacity of hardware. Recently much work has been done on real-time scheduling of parallel tasks modeled as directed acyclic graphs (DAG). However, most of these studies assume tasks to have implicit or constrained deadlines. Much less work considered the general case of arbitrary deadlines (i.e., the relative deadline is allowed to be larger than the period), which is more difficult to analyze due to intra-task interference among jobs. In this paper, we study the analysis of Global Earliest Deadline First (GEDF) scheduling for DAG parallel tasks with arbitrary deadlines. We develop new analysis techniques for GEDF scheduling of a single DAG task, which not only outperform the state-of-the-art in general evidenced by empirical evaluation, but also guarantee a better capacity augmentation bound 2.41 (the best known result is 2.5). The proposed analysis techniques are also extended to and evaluated with the case of multiple DAG tasks using the federated scheduling approach.

Original languageEnglish
Title of host publicationProceedings of the 2019 Design, Automation and Test in Europe Conference and Exhibition, DATE 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1537-1542
Number of pages6
ISBN (Electronic)9783981926323
DOIs
Publication statusPublished - 14 May 2019
Event22nd Design, Automation and Test in Europe Conference and Exhibition, DATE 2019 - Florence, Italy
Duration: 25 Mar 201929 Mar 2019

Publication series

NameProceedings of the 2019 Design, Automation and Test in Europe Conference and Exhibition, DATE 2019

Conference

Conference22nd Design, Automation and Test in Europe Conference and Exhibition, DATE 2019
Country/TerritoryItaly
CityFlorence
Period25/03/1929/03/19

ASJC Scopus subject areas

  • Hardware and Architecture
  • Electrical and Electronic Engineering
  • Safety, Risk, Reliability and Quality
  • Control and Optimization

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