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Resource Sharing among Real-Time Components under Multiprocessor Clustered Scheduling

Fulltext:


Authors:

Farhang Nemati, Thomas Nolte

Research group:

Complex Real-Time Embedded Systems

Publication Type:

Report

Publisher:

MRTC

Abstract

In this paper we generalize our recently presented synchronization protocol (MSOS) for resource sharing among independently-developed real-time systems (real-time components) on multi-core platforms. Each component is statically allocated on a dedicated subset of processors (cluster) whose tasks are scheduled by its own scheduler. In this paper we focus on multiprocessor global fixed priority preemptive scheduling algorithms to be used to schedule the tasks of each component on its cluster. Sharing the local resources (only shared by tasks within a component) is handled by the Priority Inheritance Protocol (PIP). For sharing the global resources (shared across components) we have studied the usage of FIFO and Round-Robin queues for access across the components and the usage of FIFO and prioritized queues within components for handling sharing of these resources. We have derived schedulability analysis for the different alternatives and compared their performance by means of experimental evaluations. Finally, we have formulated the integration phase in the form of a nonlinear integer programming problem whose techniques can be used to minimize the total number of required processors by all components.

Bibtex

@techreport{Nemati2112,
author = {Farhang Nemati and Thomas Nolte},
title = {Resource Sharing among Real-Time Components under Multiprocessor Clustered Scheduling},
month = {May},
year = {2011},
publisher = {MRTC},
url = {http://www.es.mdu.se/publications/2112-}
}