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:
Jul. 26, 2016
Filed:
Dec. 19, 2013
International Business Machines Corporation, Armonk, NY (US);
Jenifer Hopper, Austin, TX (US);
Mark A. Peloquin, Austin, TX (US);
Steven L. Pratt, Leander, TX (US);
Karl M. Rister, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Embodiments of the invention relate to mitigating page eviction from cache memory. Pages of data in the cache are compressed, and are periodically swapped to a physical storage device to create space in the cache for additional pages. To avoid the impact of eviction latencies, an asynchronous thread scanning process scans the cache for any pages that are not committed to the storage device, decompresses a selected one of the pages, and asynchronously writes the decompressed page copy to the physical storage device. The compressed copy of the selected page remains in the cache during the asynchronous write with an indicator for the page set to convey that a replica of the page has been written to physical storage, allowing for efficient eviction from the in-memory pool at a later time.