Analysis of hierarchical EDF pre-emptive scheduling

Fengxiang Zhang, Alan Burns

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper focuses on scheduling different hard real-time applications on a uniprocessor when the earliest deadline first algorithm is used as the local scheduler and the global scheduler of the system could be fixed Priority (FP) or earliest deadline first (EDF). Each application task could be periodic or sporadic, bound or unbound, with arbitrary relative deadline which could be less than, equal to or greater than its period A number of different server types are considered This paper presents an exact and efficient schedulability test for the application tasks based on the capacity demand criterion when the global scheduler could be FP or EDF in some cases, it is necessary and sufficient. Schedulability tests which are necessary and sufficient for several types of dynamic servers are presented when the global scheduler is EDF.

Original languageEnglish
Title of host publicationRTSS 2007: 28TH IEEE INTERNATIONAL REAL-TIME SYSTEMS SYMPOSIUM, PROCEEDINGS
Place of PublicationLOS ALAMITOS
PublisherIEEE Computer Society
Pages423-434
Number of pages12
ISBN (Print)978-0-7695-3062-8
Publication statusPublished - 2007
EventRTSS 2007 - Tucson, Arizona, USA
Duration: 3 Dec 20076 Dec 2007

Conference

ConferenceRTSS 2007
CityTucson, Arizona, USA
Period3/12/076/12/07

Keywords

  • REAL-TIME TASKS
  • ONE PROCESSOR

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