Browse Prior Art Database

Avoiding XI in Mp Systems Using Software Locks

IP.com Disclosure Number: IPCOM000037333D
Original Publication Date: 1989-Dec-01
Included in the Prior Art Database: 2005-Jan-29

Publishing Venue

IBM

Related People

Authors:
Pomerene, JH Rechtschaffen, RN Sparacio, FJ Bennett, BT Emma, PG Knight, JW [+details]

Abstract

In multiprocessing systems the degradation due to cross interrogation on shared data can be avoided for a class of locked data. The nature of the management of the cache coherency in this case is detailed. In addition, the possible use of a particular strategy based on Delayed Invalidate (DI) and Cross-Cache-Update (XCU) in a two-level cache hierarchy is discussed.