International Business Machines Corporation

John F Kearns

Steven G Ludwig

Gregory F Grohoski

A reduction in the number of cycles required to obtain data from main storage when a 'miss' occurs in a cache for a desired line of data but a match to another line from the same page of data in main storage as the desired line is present in the cache. In accordance with the present invention if a match to another line from the same page is present, the real address for the other line from the same page is used to fetch the desired line of data directly from the main storage without an address translation. This technique works for a virtually addressed cache whose directory contains both a virtual and a real address for every line of data stored in the cache.

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Rhinebeck, NY, United States of America

John F Kearns