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On Adaptive Hierarchical Scheduling of Real-time Systems Using a Feedback Controller
Mälardalens högskola, Akademin för innovation, design och teknik.ORCID iD: 0000-0003-2670-3022
Mälardalens högskola, Akademin för innovation, design och teknik.ORCID iD: 0000-0002-1687-930X
Mälardalens högskola, Akademin för innovation, design och teknik.ORCID iD: 0000-0001-6132-7945
Mälardalens högskola, Akademin för innovation, design och teknik.ORCID iD: 0000-0001-6157-5199
2011 (English)In: 3rd Workshop on Adaptive and Reconfigurable Embedded Systems (APRES'11), 2011Conference paper, Published paper (Refereed)
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Text
Abstract [en]

Hierarchical scheduling provides predictable timing and temporal isolation; two properties desirable in real-time embedded systems. In hierarchically scheduled systems, subsystems should receive a sufficient amount of CPU resources in order to be able to guarantee timing constraints of its internal parts (tasks). In static systems, an exact amount of CPU resource can be allocated to a subsystem. However, in dynamic systems, where execution times of tasks vary considerably during runtime, it is desirable to give a dynamic portion of the CPU given the current load situation. In this paper we present a feedback control approach for adapting the amount of CPU resource that is allocated to subsystems during run-time such that each subsystem receives sufficient resources while keeping the number of deadline violations to a minimum. We also show an example simulation where the controller adapts the budget of a subsystem.

Place, publisher, year, edition, pages
2011.
National Category
Computer Systems
Identifiers
URN: urn:nbn:se:kth:diva-179017OAI: oai:DiVA.org:kth-179017DiVA: diva2:878748
Conference
APRES 2011, 3rd Workshop on Adaptive and Reconfigurable Embedded Systems (APRES 2011), Integrated in the CPSWEEK 2011, Chicago, Illinois, April 11, 2011.
Note

NV 20151210

Available from: 2011-12-15 Created: 2015-12-09 Last updated: 2015-12-10Bibliographically approved

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Moghaddami Khalilzad, NimaBehnam, MorisNolte, ThomasÅsberg, Mikael

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CiteExportLink to record
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Citation style
  • apa
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Output format
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