A carregar...
Publicação
Enhancing the real-time capabilities of the Linux Kernel
| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| 601.18 KB | Adobe PDF |
Orientador(es)
Resumo(s)
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.
Descrição
Palavras-chave
Contexto Educativo
Citação
Editora
ACM