Re: [Lse-tech] Node affine NUMA scheduler extension

[Andi Kleen <ak@suse.de>]

> I left the loadbalancer to decide on where the homenode should be. And
> the decision wasn't good enough (it lead to unbalanced nodes, that's
> certainly not the case on Opteron :-). So it made sense to have a
> specialized homenode chooser which considered the node loads instead
> of changing the normal load balancer.

I have that, but only on exec (similar to what 2.5 mainline does with the
NUMA scheduler)

> BTW: do you assign the homenode at first load balancing or at first
> cross-node balancing?

It's the same on Opteron: each CPU is an own node. The lazy homenode for
fork/clone is chosen on the first load balance of the new thread.


-Andi