>real-time makes a system slower. linux-rt's PREEMPT_RT has a negligible impact. It is there, but it is negligible. It does, however, enable a lot of use cases

>real-time makes a system slower. linux-rt's PREEMPT_RT has a negligible impact. It is there, but it is negligible. It does, however, enable a lot of use cases where Linux fails otherwise, such as pro audio. In modern usage, it even helps reduce input jitter with videogames and enable lower latency videoconference. I am hopeful most distributions will turn it on by default, as it benefits most users, and causes negligible impact on throughput-centric workloads.