What is the real-time model for IRIX?
From the Real-time in IRIX 6.5 Technical Report: With IRIX 6.5, there are two models for achieving real-time determinism: the processor isolation model and the kernel preemption model. Briefly, here are the definitions for these two models: Kernel preemption model. This model achieves determinism by executing real-time processes at high priority and relying upon preemption, including preemption of kernel processes and interrupts, to ensure that the highest priority runable process always is executing. Processor isolation model. This model is a superset of the kernel preemption model. In addition to relying upon process priority for preemption, interrupt response time can be decreased by isolating real-time processes and interrupts to certain CPUs of a multiprocessor system.
