Messages in this thread | | | From | Erich Focht <> | Subject | Re: [Lse-tech] Node affine NUMA scheduler extension | Date | Tue, 27 May 2003 13:50:16 +0200 |
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On Tuesday 27 May 2003 13:40, Andi Kleen wrote: > > 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)
Oh, that's fine, then. It's better than just on exec().
> > 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.
Ah, you're right :-)
Erich
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