Publication details

D. Casini, L. Abeni, A. Biondi, T. Cucinotta, G. Buttazzo. "Constant Bandwidth Servers with Constrained Deadlines," in Proceedings of the 25th International Conference on Real-Time Networks and Systems (RTNS 2017), October 4-6, 2017, Grenoble, France.

Abstract

The Hard Constant Bandwidth Server (H-CBS) is a reservation-based scheduling algorithm often used to mix hard and soft real-time tasks on the same system. A number of variants of the H-CBS algorithm have been proposed in the last years, but all of them have been conceived for implicit server deadlines (i.e., equal to the server period). However, recent promising results on semi-partitioned scheduling together with the demand for new functionality claimed by the Linux community, urge the need for a reservation algorithm that is able to work with constrained deadlines. This paper presents three novel H-CBS algorithms that support constrained deadlines. The three algorithms are formally analyzed, and their performance are compared through an extensive set of simulations.

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Last updated on
07 November 2024