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Attached Processors Data Copies Disclosure Number: IPCOM000053094D
Original Publication Date: 1981-Aug-01
Included in the Prior Art Database: 2005-Feb-12

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Related People

Dutton, PF Sitler, WR [+details]


In an attached processor system that utilizes two independent storage controllers, contention will exist for common data located in the caches. To reduce this contention, which reduces inpaging and outpaging of the data, copy bits are provided for each page in the cache. This bit, when on, indicates that the data could reside in each storage controller's cache.