• German
German

Main Navigation

Brueggen/etal/2016a: Exact Speedup Factors for Linear-Time Schedulability Tests for Fixed-Priority Preemptive and Non-preemptive Scheduling

Bibtype Article
Bibkey Brueggen/etal/2016a
Author von der Brüggen, Georg and Chen, Jian-Jia and Davis, Robert I. and Huang, Wen-Hung Kevin
Title Exact Speedup Factors for Linear-Time Schedulability Tests for Fixed-Priority Preemptive and Non-preemptive Scheduling
Journal Information Processing Letters (IPL)
Volume 117
Pages 1-5
Abstract In this paper, we investigate the quality of several linear-time schedulability tests for preemptive and non-preemptive fixed-priority scheduling of uniprocessor systems. The metric used to assess the quality of these tests is the resource augmentation bound commonly known as the processor speedup factor. The speedup factor of a schedulability test corresponds to the smallest factor by which the processing speed of a uniprocessor needs to be increased such that any task set that is feasible under an optimal preemptive (non-preemptive) work-conserving scheduling algorithm is guaranteed to be schedulable with preemptive (non-preemptive) fixed priority scheduling if this scheduling test is used, assuming an appropriate priority assignment. We show the surprising result that the exact speedup factors for Deadline Monotonic (DM) priority assignment combined with sufficient linear-time schedulability tests for implicit-, constrained-, and arbitrary-deadline task sets are the same as those obtained for optimal priority assignment policies combined with exact schedulability tests. Thus in terms of the speedup-factors required, there is no penalty in using DM priority assignment and simple linear schedulability tests.
Month Jan
Year 2017
Projekt SFB876-B2
Url http://ls12-www.cs.tu-dortmund.de/daes/media/documents/publications/downloads/2016-IPL-speedup.pdf
 
Bibtex Here you can get this literature entry as BibTeX format.