Abstract

Although in the last years many scheduling algorithms has been proposed, just few of them has been truly implemented in real RTOS. In most cases, the availability of RTOS source code or the complexity and risks involved in introducing new politics in kernel, causes that major part of nowadays RTOS only implements fixed priorities politics. To solve this, M. González (Universidad de Cantabria) is proposing a new POSIX standard called application-defined scheduling, that allows to introduce new scheduling politics without having to modify O.S. kernel's. This paper describes our experiences in the implementation of application-defined scheduling in RTLINUX. With this feature, several application-defined schedulers, implemented as special threads, can coexist in the system in a predictable way.

(Paper not available)

 
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