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Non-preemptive and SRP-based fullypreemptive scheduling of real-time Software Transactional Memory
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Orientador(es)
Resumo(s)
Recent embedded processor architectures containing multiple heterogeneous cores and non-coherent
caches renewed attention to the use of Software Transactional Memory (STM) as a building block for
developing parallel applications. STM promises to ease concurrent and parallel software development,
but relies on the possibility of abort conflicting transactions to maintain data consistency, which in turns
affects the execution time of tasks carrying transactions. Because of this fact the timing behaviour of the
task set may not be predictable, thus it is crucial to limit the execution time overheads resulting from
aborts. In this paper we formalise a FIFO-based algorithm to order the sequence of commits of concurrent
transactions. Then, we propose and evaluate two non-preemptive and one SRP-based fully-preemptive
scheduling strategies, in order to avoid transaction starvation.
Descrição
Palavras-chave
Real-time systems Synchronization mechanisms Software Transactional Memory Non-preemptive scheduling Stack Resource Protocol Cache non-coherency Multi-core platforms Contention management
Contexto Educativo
Citação
Editora
Elsevier