Re: [BENCHMARKS] 2.6.4 vs 2.6.4-mm1

Nick Piggin
2004-03-21T08:09:14Z

Ingo Molnar wrote:

>your patch looks interesting.
>
>

I'll see if I can get some numbers for it soon.

>wrt. making a fully scalable MM read side:
>
>perphaps RCU could be used to make lookup access to the vma tree and
>lookup of the pagetables lockless. This would make futexes (and
>pagefaults) fundamentally scalable.
>
>another option would be to introduce a rwsem which is read-scalable, but
>this would pessimise writes quite as bad as brlocks did. I'm not sure
>how acceptable that is.
>
>

It is a pretty silly benchmark. But I guess one day someone
is going to complain about mm scalability.