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Design and Evaluation of a Real-Time Task Scheduler using Tabu Search
University of Skövde, Department of Computer Science.
1997 (English)Independent thesis Basic level (degree of Bachelor)Student thesis
Abstract [en]

Real-time task scheduling problems are generally considered to be NP-hard problems. Therefore it is necessary to apply a heuristic search strategy on these problems. This project focuses on the development of a real-time scheduling algorithm using tabu search.

A dynamic real-time task scheduling problem is defined for a single processor. The tasks in the system are sporadic, mutually independent, non-preemptable with firm, arbitrary deadlines. This problem is represented with tabu search. For performance measurements a simulator has been designed and implemented. Simulations have been conducted comparing scheduler based on tabu search to two well known scheduling algorithms, namely: earliest deadline first and highest value first. It was expected that the scheduler based on tabu search would outperform highest-value first and it would miss fewer deadlines than earliest deadline, as soon as earliest deadline starts to miss deadlines. The results of the simulations conducted did not show this results. Nevertheless did the simulation results indicate that tabu search could be a suitable heuristic search strategy for real-time task scheduling problems. This project provides a starting point on which it is possible to continue work on enhancing the tabu search scheduler.

Place, publisher, year, edition, pages
Skövde: Institutionen för datavetenskap , 1997. , 70 p.
National Category
Information Science
Identifiers
URN: urn:nbn:se:his:diva-240OAI: oai:DiVA.org:his-240DiVA: diva2:2596
Presentation
(English)
Uppsok
samhälle/juridik
Supervisors
Available from: 2007-11-07 Created: 2007-11-07 Last updated: 2009-06-22

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf