Schedulability Analysis of Real-time Systems under Dual-priority Scheduling

This paper presents schedulability analysis which has been developed in order to precisely estimate task response times, taking into account kernel execution effects. The analysis takes into consideration specific features of the HARTEX hard real-time kernel, and in particular: asynchronous event-driven operation; integrated scheduling of hard and soft real-time tasks (as well as tasks and resources) and advanced task management, whereby kernel operations are executed in constant time, independent of the number of tasks involved. The developed test has been incorporated into a system specification and analysis tool supporting HARTEX-based real-time applications.