Hong Jin Park, Kyung Ah Chun, Chang Min Kim

The Transactions of the Korea Information Processing Society (1994 ~ 2000), Vol. 6, No. 12, pp. 3652-3661, Dec. 1999
10.3745/KIPSTE.1999.6.12.3652,   PDF Download:

Abstract

To support multimedia application such as a multimedia communication systems and multimedia broadcasting, an operating system need to predict their timing-constraints. So, In this real_time systems, we must solve the priority inversion problem that may make the behavior of unpredictable systems and need a real-time server model that provides a better preemptability and minimizes a system overhead. In current real-time systems, the single thread server model, the worker model and the dynamic server model are being used for synchronization but they cannot propose an effective structure for managing shared resources. In this paper, the priority inheritance protocol is used to solve the priority inversion problem and the hybrid prioritized worker model is proposed, which can provide a more effective structure and a faster response time minimizing a system overhead. The hybrid prioritized worker model is to combine the static and the dynamic prioritizes worker model, and have a better performance than other models in response time which is an important factor in a real-time system.

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