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SubjectRe: Off topic: Numactl "distance" wrong
> That's not enough. You would need to redo all the zone fallback tables
> in the VM that are initialized based on topology, do new scheduler
> topologies and all kind of other stuff.

I think this is very good viewpoint.

The rebuilding zone fallback table and scheduler topologies need to add
new lock.

Oh well, who need memory and scheduler performance regression?
Then, its /sys interface isn't so useful.

I don't think the manual setting of node distance improve
opteron's (or another small machine) performance.

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