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Scheduling Soft Real-Time Jobs Over Dual Non-Real-Time Servers
January 1996 (vol. 7 no. 1)
pp. 56-68

Abstract—In this paper, we consider soft real-time systems with redundant off-the-shelf processing components (e.g., CPU, disk, network), and show how applications can exploit the redundancy to improve the system's ability of meeting response time goals (soft deadlines). We consider two scheduling policies, one that evenly distributes load (Balance), and one that partitions load according to job slackness (Chop). We evaluate the effectiveness of these policies through analysis and simulation. Our results show that by intelligently distributing jobs by their slackness amount the servers, Chop can significantly improve real-time performance.

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Index Terms:
Real-time systems, scheduling, dual servers, soft deadlines, distributed systems.
Citation:
Benjamin Kao, Hector Garcia-Molina, "Scheduling Soft Real-Time Jobs Over Dual Non-Real-Time Servers," IEEE Transactions on Parallel and Distributed Systems, vol. 7, no. 1, pp. 56-68, Jan. 1996, doi:10.1109/71.481598
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