Operating system structure model for real-time systems

For real time computing, an operating system is one of the most important components to realize the required computing functions with time critical conditions. OS Route MIX is proposed for evaluating OS performance. By applying this performance measure, the practical OS designs are shown. To improve OS performance, the "three layers structure model" is defined, to add an OS process as one of OS function implementation, i.e. a way of simplifying OS design and improving performance. The practical results and data are shown.