General Functionality

There really are not any quantitative measurements that could be done to evaluate the general functionality and correctness of a system. However, normal usage, comprehensive testing, and latency measurements already gave a good estimate of the overall system functionality. An incorrectly working system would have caused noticeable problems, such as wrong calculation results or kernel panic messages. The system functionality was constantly observed during the testing and development, which proved the general system to be working very reliably. But other, more thorough experiments were not executed to evaluate the system functionality.

Throughout all latency measurements, the system was completely stable and usable without any signs of problems. The kernel did not show any instability even when different areas were loaded heavily. During all the testing no system misbehavior was observed, which gives good confidence that the PREEMPT_RT patched Linux was not experiencing any severe problems on RISC-V architecture.