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A survey of scheduling metrics and an improved ordering policy for list schedulers operating on workloads with dependencies and a wide variation in execution times
University of York.
University of York.ORCID iD: 0000-0003-2415-8219
University of York.
2012 (English)In: Future Generation Computer Systems, ISSN 0167-739X, Vol. 29, no 8, p. 2009-2025Article in journal (Refereed) Published
Abstract [en]

This paper considers the dynamic scheduling of parallel, dependent tasks onto a static, distributed computing platform, with the intention of delivering fairness and quality of service (QoS) to users. The key QoS requirement is that responsiveness is maintained for workloads with a wide range of execution times (minutes to months) even under transient periods of overload. A survey of schedule QoS metrics is presented, classified into those dealing with responsiveness, fairness and utilisation. These metrics are evaluated as to their ability to detect undesirable features of schedules. The Schedule Length Ratio (SLR) metric is shown to be the most helpful for measuring responsiveness in the presence of dependencies. A novel list scheduling policy called Projected-SLR is presented that delivers good responsiveness and fairness by using the SLR metric in its scheduling decisions. Projected-SLR is found to perform equally as well in responsiveness, fairness and utilisation as the best of the other scheduling policies evaluated (Shortest Remaining Time First/SRTF), using synthetic workloads and an industrial trace. However, Projected-SLR does this with a guarantee of starvation-free behaviour, unlike SRTF.

Place, publisher, year, edition, pages
North-Holland , 2012. Vol. 29, no 8, p. 2009-2025
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:mdh:diva-23841DOI: 10.1016/j.future.2012.12.005ISI: 000326613400013Scopus ID: 2-s2.0-84885953554OAI: oai:DiVA.org:mdh-23841DiVA, id: diva2:682348
Available from: 2013-12-27 Created: 2013-12-19 Last updated: 2014-06-18Bibliographically approved

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Bate, Iain

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Citation style
  • apa
  • 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