Multi-Scheduling Technıque for Real-Time Systems on Embedded Multi-Core Processors

Abstract

This thesis introduces Multi-scheduling method for Multi-core hardware platforms without running heterogeneous operating systems concurrently. In this technique, there are two schedulers in single operating system. One of them is for real-time applications and the other is for general or non-real-time applications. In heterogeneous operating systems approach, a real time operating system services real-time functionality such as low interrupt latency while a versatile operating system processes IT applications.By modifying Symmetric-Multiprocessing (SMP) technique in Linux, two schedulers are enabled to run on same kernel and each of them runs on different CPU cores. Our proposed technique is tested by real-time de-facto test tools and programs accepted all over the world. The most important characteristic of a real-time application such as low interrupt latency and responsiveness were benchmarked. The results show that Multi-scheduling technique can be profitable and valuable.