System and method for dynamically controlling cache management
June 4, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod and apparatus for discarding data from a buffer after reading such data Automatic adjustment of the quantity of prefetch data in a disk cache operation Multi-user read-ahead memory Peripheral data storage having access controls with error recovery Digital computer with cache capable of concurrently handling multiple accesses from parallel processors Prefetching system for a cache having a second directory for sequentially accessed blocks I/O interface system using plural buffers sized smaller than non-overlapping contiguous computer memory portions dedicated to each buffer Bus expander with logic for virtualizing single cache control into dual channels with separate directories and prefetch for different processors Quadword boundary cache system Method and apparatus for addressing a cache memory InventorsAssigneeApplicationNo. 893509 filed on 06/04/1992US Classes:711/133, Entry replacement strategy711/129Partitioned cacheExaminersPrimary: Dixon, Joseph L.Assistant: Kim, Matthew Attorney, Agent or FirmInternational ClassG06F 012/08AbstractA cache management system and method monitors and controls the contents of cache memory coupled to at least one host and at least one data storage device. A cache indexer maintains a current index of data elements which are stored in cache memory. A sequential data access indicator, responsive to the cache index and to a user selectable sequential data access threshold, determines that a sequential data access is in progress for a given process and provides an indication of the same. The system and method allocate a micro-cache memory to any process performing a sequential data access. In response to the indication of a sequential data access in progress and to a user selectable maximum number of data elements to be prefetched, a data retrieval requestor requests retrieval of up to the selected maximum number of data elements from a data storage device. A user selectable number of sequential data elements determines when previously used micro-cache memory locations will be overwritten. A method of dynamically monitoring and adjusting cache management parameters is also presented. | |
