Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/3810
Título: Implementing slot-based task-splitting multiprocessor scheduling
Autor: Sousa, Paulo Baltarejo
Andersson, Björn
Tovar, Eduardo
Palavras-chave: Multiprocessor scheduling
Semi-partitioned scheduling
Linux kernel
Data: 2011
Editora: IEEE
Relatório da Série N.º: Industrial Embedded Systems (SIES);
Resumo: Consider the problem of scheduling a set of sporadic tasks on a multiprocessor system to meet deadlines using a task-splitting scheduling algorithm. Task-splitting (also called semi-partitioning) scheduling algorithms assign most tasks to just one processor but a few tasks are assigned to two or more processors, and they are dispatched in a way that ensures that a task never executes on two or more processors simultaneously. A particular type of task-splitting algorithms, called slot-based task-splitting dispatching, is of particular interest because of its ability to schedule tasks with high processor utilizations. Unfortunately, no slot-based task-splitting algorithm has been implemented in a real operating system so far. In this paper we discuss and propose some modifications to the slot-based task-splitting algorithm driven by implementation concerns, and we report the first implementation of this family of algorithms in a real operating system running Linux kernel version 2.6.34. We have also conducted an extensive range of experiments on a 4-core multicore desktop PC running task-sets with utilizations of up to 88%. The results show that the behavior of our implementation is in line with the theoretical framework behind it.
Peer review: yes
URI: http://hdl.handle.net/10400.22/3810
ISBN: 978-1-61284-819-8
Versão do Editor: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5953669&tag=1
Aparece nas colecções:ISEP – CISTER – Comunicações em eventos científicos

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