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Apportionment methods and the Liu–Layland problem
Authors:Joanna Józefowska  Łukasz Józefowski  Wiesław Kubiak
Institution:1. Institute of Computing Science, Poznań University of Technology, Piotrowo 2, 60-965 Poznań, Poland;2. Faculty of Business Administration, Memorial University, St. John’s, Canada
Abstract:The Liu–Layland periodic scheduling problem can be solved by the house monotone quota methods of apportionment. This paper shows that staying within the quota is necessary for any apportionment divisor method to solve this problem. As a consequence no divisor method, or equivalently no population monotone method, solves the Liu–Layland problem.
Keywords:Scheduling  Just-in-time scheduling  Apportionment theory  Divisor methods  Hard real-time systems
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