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Achieving Exclusivity

The PROMOTE technique ensures that only one cache claims ownership of a page on its way to the client. On subsequent accesses to the page, the page can either stay in the same cache or be promoted upwards. As in DEMOTE, only when a page is accessed via different paths in a multi-path hierarchy can a page appear in multiple locations (which is better than enforcing absolute exclusivity).



root 2008-01-08