The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 11, 1985
Filed:
Mar. 03, 1982
Lawrence D Sasscer, Santa Clara, CA (US);
Sperry Corporation, New York, NY (US);
Abstract
In a system having a cache memory and a bulk memory, and wherein a command queue is maintained for storing commands waiting to be executed, each command is assigned a priority level for execution vis-a-vis other commands in the queue. Commands are generated for transferring from the cache memory to the bulk memory segments of data which have been written to while resident in the cache memory. Each generated command may be assigned a generated priority level which is dependent upon the number of segments in the cache memory which have been written to but not yet copied into the bulk memory. A second priority level may be generated which is dependent on the time which has elapsed since the first write into any of the cache memory segments, and the priority level assigned to any given generated command is the higher of the two generated priority levels.