[Xen-devel] [PATCH 0 of 2] credit2: Reduce excessive cpu migration

[George Dunlap <george.dunlap@xxxxxxxxxxxxx>]

More recent processors have one L2 per core.  My plan for the credit2
scheduler invovled having several cores sharing the same runqueue.

I've measured the cost of excessive cross-L2 intra-L3 migrations, and while
they're not excessive, they are measurable.  This patch series introduces
some simple heuristics to reduce unnecessary migration.

As in all the Credit2 work, this is a first cut, and I'm sure there are
further improvments.

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