Data caching method

US8751749B2 · kind B2 · utility

Assignee

• International Business Machines Corporation · US

Inventors

• Christian Habermann · Stuttgart, DE
• Martin Recktenwald · Eppelheim, DE
• Hans-Werner Tast · Holzgerlingen, DE
• Ralf Winkelmann · Eppelheim, DE

Key dates

• Filing date: Jun 14, 2011
• Grant date: Jun 10, 2014
• Expiry date: Apr 26, 2032

Classification

• Technology area (CPC —): General

Abstract

Data caching for use in a computer system including a lower cache memory and a higher cache memory. The higher cache memory receives a fetch request. It is then determined by the higher cache memory the state of the entry to be replaced next. If the state of the entry to be replaced next indicates that the entry is exclusively owned or modified, the state of the entry to be replaced next is changed such that a following cache access is processed at a higher speed compared to an access processed if the state would stay unchanged.