A Survey of Real-Time Operating Systems -- Preliminary Draft

This paper describes current research in real time operating systems. Due to its importance to real-time systems, we begin this survey with a brief summary of relevant results in real-time scheduling and synchronization. Real-time operating systems are described in terms of the primitives and constructs offered to application programs. In addition, the effects of underlying computer architectures on real-time operating systems are discussed, followed by a description of benchmarks and evaluation methods for real-time systems