Re: [QUESTION] Are these issues PREEMPT_RT-specific?

[Ran Hongyun]

Florian,

Thank you for your reply.

Now I understand that the issues are particularly critical on PREEMPT_RT. 
However, I’m still not entirely clear about the "performance or throughput
drop" you mentioned for !RT systems. Since !RT kernels are
non-preemptible, unbounded priority inversion and stalls should not occur.
Are there any other factors that could still cause such a performance or
throughput drop?

In other words, if I am running a !RT system, what benefit can I actually
expect from switching from rwlock to spinlock?

I`d appreciate any further insights.

Thanks,
Ran Hongyun