Andrea Arcangeli <[EMAIL PROTECTED]> wrote: > > if you're scared that there are too many cond_resched (I'm not scared > and people should enable them anyways if they make a difference, they > still should be less than the number of spin_unlocks with preempt > enabled), then you should add a cond_resched_costly and add a config > option that turns it off.
None of these approaches improves worst-case latency at all on SMP. If we're not going to address the SMP problem we could just make it UP-only, in which case increased locking costs are a non-issue. I'd prefer that we find a solution for SMP too though.
