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Schedulability and Timing Analysis of Mixed Preemptive-Cooperative Tasks on a Partitioned Multi-Core System

Posted: Fri Jul 01, 2016
by Sophie Quinton
Title: Schedulability and Timing Analysis of Mixed Preemptive-Cooperative Tasks on a Partitioned Multi-Core System

Authors:
Ignacio SaƱudo, Paolo Burgio and Marko Bertogna (Universita di Modena, Italy)

Abstract:
This paper proposes a solution for the FMTV verification challenge related to the timing and schedulability analysis of an engine management system to be executed on a shared-memory multi-core platform. The application consists of statically partitioned tasks, each one composed of multiple runnables that are executed according to a read-compute-write policy, where the memory labels required by a runnable are loaded from memory before starting its execution, and they are all stored after the runnable completes its execution. Tasks may be either fully preemptive or only partially at runnable boundaries. The contribution of the paper is threefold. First, we present a tight schedulability analysis for this mixed-preemption setting, neglecting memory accesses (Challenge I). Then, memory access times and arbitration delays are included to the schedulability analysis, addressing Challenge II. Finally, Challenge III is tackled proposing different approaches to map the labels to local/global memories so as to minimize the end-to-end latency of selected
event chains.

Attached document:
FMTV_2016_mixed_preemptive.pdf
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