Re: [RFC][PATCH 14/26] sched, numa: Numa balancer

Peter Zijlstra
2012-07-09T12:40:59Z

On Mon, 2012-07-09 at 14:23 +0200, Peter Zijlstra wrote:
> > It is not yet clear to me how and why your code converges.
>
> I don't think it does.. but since the scheduler interaction is fairly
> weak it doesn't matter too much from that pov.
>
That is,.. it slowly moves along with the cpu usage, only if there's a
lot of remote memory allocations (memory pressure) things get funny.

It'll try and rotate all tasks around a bit trying, but there's no good
solution for a memory hole on one node and a cpu hole on another, you're
going to have to take the remote hits.

Again.. what do we want it to do?