Please use this identifier to cite or link to this item: http://hdl.handle.net/2381/4324
Title: Improving the performance of time-triggered embedded systems by means of a scheduler agent.
Authors: Gendy, Ayman K.
Dong, Lei
Pont, Michael J.
First Published: Sep-2007
Publisher: Dept. of Engineering, University of Leicester.
Citation: Proceedings of the ASME 2007 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference (IDETC/CIE 2007).
Abstract: Knowledge of task execution time is a key requirement when determining the most appropriate scheduler algorithm (and scheduler parameters) for use with embedded systems. Unfortunately, determining task execution times (ETs) can be a challenging process. This paper introduces a novel system architecture which is based on two components (i) the main processor (MP) platform, containing the time-triggered (cooperative) scheduler and task code, and (ii) a second processor, executing a “scheduler agent” (SA). In the experiments described in this paper, the MP contains an instrumented scheduler and, during a “tuning” phase, the SA measures – on line – the ET of each task as it runs. The measured values are then used to fine tune the task schedule in an attempt to ensure that (i) all task constraints - such as deadline and jitter - are met (ii) power consumption is reduced. After the tuning phase is completed the SA continues to monitor the MP and can take appropriate action in case of errors. In the paper, the effectiveness of the proposed architecture is demonstrated empirically by applying it to a set of tasks that represent a typical embedded control system.
Series/Report no.: DETC2007-35369
Links: http://www.asmeconferences.org/IDETC07/ConfSpecInfo.cfm
http://hdl.handle.net/2381/4324
Type: Conference paper
Description: This paper was delivered at the Proceedings of the ASME 2007 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference (IDETC/CIE 2007), September 4-7, 2007.
Appears in Collections:Conference Papers & Presentations, Dept. of Engineering

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