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Adjusting Priority Of Memory Operations

IP.com Disclosure Number: IPCOM000067383D
Original Publication Date: 1979-Jul-01
Included in the Prior Art Database: 2005-Feb-20

Publishing Venue

IBM

Related People

Authors:
Roberts, JG Sands, RL Souers, EW Tennison, RD [+details]

Abstract

A data base-type memory, having an upper memory level for exchanging data signals and data requests with a plurality of hosts and a lower data memory level for storing large amounts of data is controlled and sequenced by data base memory control. The data base memory control is a program digital processor having a control memory and access to various memory levels for fetching control programs. Included in the data base memory control is a priority select program which assigns priorities to queue control blocks (QCBs) which control operations of the data base memory, for example, control of staging operations (the transfer of data from the lower memory level to the upper memory level) and destaging operations (the transfer of data signals from the upper memory level to the lower memory level).