Re: [RFC][PATCH 00/26] sched/numa

Andrea Arcangeli
2012-03-19T14:20:19Z

On Mon, Mar 19, 2012 at 02:29:36PM +0100, Peter Zijlstra wrote:
> On Mon, 2012-03-19 at 14:04 +0100, Andrea Arcangeli wrote:
> > For the niche there's the
> > numactl, cpusets, and all sort of bindings already. No need of more
> > niche, that is pure kernel API pollution in my view, the niche has all
> > its hard tools it needs already.
>
> Not quite, I've heard that some HPC people would very much like to relax
> some of that hard binding because its just as big a pain for them as it
> is for kvm.

Then I guess if they call hard bindings a big pain, they won't be
excited by the pain you offer them through your new soft binding
syscalls.

It's totally ok for qemu, which will just run 2 syscalls per
vnode.

But with your solution some apps will suffer from the same massive
pain that they're currently suffering. This is why is still niche to me.