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- W3008082241 abstract "Shared caches in multicore processors introduce serious difficulties in providing guarantees on the real-time properties of embedded software due to the interaction and the resulting contention in the shared caches. To address this problem, we develop a new schedulability analysis for real-time multicore systems with shared caches, globally scheduled by Earliest Deadline First (EDF) and Fixed Priority (FP) algorithms. We construct an integer programming formulation, which can be transformed to an integer linear programming formulation, to calculate an upper bound on cache interference exhibited by a task within a given execution window. Using the integer programming formulation, an iterative algorithm is presented to obtain the upper bound on cache interference a task may exhibit during one job execution. The upper bound on cache interference is subsequently integrated into the schedulability analysis to derive a new schedulability condition. A range of experiments is performed to investigate how the schedulability is degraded by shared cache interference. We also evaluate the schedulability performance of EDF against FP scheduling over randomly generated tasksets. Our empirical evaluations show that EDF is better than FP scheduling in terms of the number of task sets deemed schedulable." @default.
- W3008082241 created "2020-03-06" @default.
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- W3008082241 date "2020-10-01" @default.
- W3008082241 modified "2023-10-02" @default.
- W3008082241 title "Schedulability Analysis of Global Scheduling for Multicore Systems With Shared Caches" @default.
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- W3008082241 doi "https://doi.org/10.1109/tc.2020.2974224" @default.
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