Scheduling Aperiodic Requests under the Rate-Based Execution Model

  • Authors:

  • Steve Goddard;Xin Liu

  • Affiliations:

  • -;-

  • Venue:
  • RTSS '02 Proceedings of the 23rd IEEE Real-Time Systems Symposium
  • Year:
  • 2002

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Abstract

Aperiodic requests with unknown execution times and unknown arrival patterns are dynamically mapped to rate-based execution (RBE) tasks with variable rates and scheduled such that the real-time tasks are guaranteed to meet their deadlines. The aperiodic requests dynamically share the available processor capacity without reserving a fixed processor capacity for any one aperiodic request (or class of requests). This approach was selected over the traditional approach of using a static set of server tasks to process aperiodic requests so that the available processor capacity could be proportionally shared between active aperiodic requests.