Re: [PATCH] change global zonelist order on NUMA v2

KAMEZAWA Hiroyuki
2007-04-27T00:27:36Z

On Thu, 26 Apr 2007 08:48:19 -0700 (PDT)
Christoph Lameter <clameter@sgi.com> wrote:

> On Thu, 26 Apr 2007, KAMEZAWA Hiroyuki wrote:
>
> > (1)Use new zonelist ordering always and move init_task's tied cpu to a
> > cpu on the best node.
> > Child processes will start in good nodes even if Node 0 has small memory.
>
> How about renumbering the nodes? Node 0 is the one with no DMA memory and
> node 1 may be the one with the DMA? That would take care of things even
> without core modifications. We can start on node 0 (which hardware 1) and
> consume the required memory for boot there not impacting the node with the
> DMA memory.
>
It seems a bit complicated. If we do so, following can occur,

Node1: cpu0,1,2,3
Node0: cpu4,5,6,7

the system layout will be not imaginable look, maybe.

-Kame