(m,k)-WFQ, intégration des contraintes temporelles (m,k)-firm dans les réseaux à débit garanti
Identifieur interne : 000440 ( PascalFrancis/Checkpoint ); précédent : 000439; suivant : 000441(m,k)-WFQ, intégration des contraintes temporelles (m,k)-firm dans les réseaux à débit garanti
Auteurs : Anis Koubaa [France] ; Ye-Qiong Song [France] ; Jean-Pierre Thomesse [France]Source :
- TSI. Technique et science informatiques [ 0752-4072 ] ; 2005.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Entreprise.
English descriptors
- KwdEn :
Abstract
Guaranteed-Rate (GR) servers, such as Weighted Fair Queueing (WFQ) and its variants, have been widely used to give mainly bandwidth guarantees and consequently delay guarantees for real-time flows provided that their arrivals are upper-bounded. Problems may arise if a bursty traffic with a small service share needs a specific short delay. In fact, the higher the service share is, the lower the delay the flow gets. However, WFQ and its variants are share-driven servers and no temporal constraint is considered in the scheduling process. Therefore, having in mind that many real-time applications could tolerate some deadline misses according to their (m,k)-firm constraints, we propose a new scheduling technique called (m,k)-WFQ which extends WFQ to also consider (m,k)-firm temporal requirement. Analytic expressions using Network Calculus theory are derived to give deterministic upper bound on delay provided by the (m,k)- WFQ scheduler.
Affiliations:
- France
- Grand Est, Lorraine (région)
- Nancy, Villers-lès-Nancy
- Centre national de la recherche scientifique, Institut national de recherche en informatique et en automatique, Laboratoire lorrain de recherche en informatique et ses applications, Université de Lorraine
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Pascal:06-0149163Le document en format XML
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