Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/3712
Título: Enhancing the real-time capabilities of the Linux Kernel
Autor: Sousa, Paulo Baltarejo
Pereira, Nuno
Tovar, Eduardo
Data: 2012
Editora: ACM
Relatório da Série N.º: Real-Time Systems (ECRTS); Vol. 9, Issue 4
Resumo: The mainline Linux Kernel is not designed forhard real-time systems; it only fits the requirements of soft realtimesystems. In recent years, a kernel developer communityhas been working on the PREEMPT-RT patch. This patch(that aims to get a fully preemptible kernel) adds some realtimecapabilities to the Linux kernel. However, in terms ofscheduling policies, the real-time scheduling class of Linux islimited to the First-In-First-Out (SCHED_FIFO) and Round-Robin (SCHED_RR) scheduling policies. These scheduling policiesare however quite limited in terms of realtime performance.Therefore, in this paper, we report one importantcontribution for adding more advanced real-time capabilitiesto the Linux Kernel. Specifically, we describe modificationsto the (PREEMPT-RT patched) Linux kernel to supportreal-time slot-based task-splitting scheduling algorithms. Ourpreliminary evaluation shows that our implementation exhibitsa real-time performance that is superior to the schedulingpolicies provided by the current version of PREMPT-RT. Thisis a significant add-on to a widely adopted operating system.
Peer review: yes
URI: http://hdl.handle.net/10400.22/3712
Versão do Editor: http://dl.acm.org/citation.cfm?doid=2452537.2452546
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