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. 11, 2023
Filed:
Jun. 14, 2022
Dell Products L.p., Hopkinton, MA (US);
John Creed, Innishannon, IE;
Owen Martin, Hopedale, MA (US);
Dell Products L.P., Hopkinton, MA (US);
Abstract
A data storage system with interconnected compute nodes includes a shared memory with volatile and non-volatile portions. Data tracks evicted from the volatile portion are moved to the non-volatile portion based on a cache-miss interarrival rate threshold that is calculated based on capacity and fall-through time of the non-volatile portion of the shared memory. Data extents on non-volatile drives are characterized based on dominant modes of extent-level cache-miss interarrival histograms generated using countdown timers of most recent backend accesses of sub-extents. The dominant mode of the extent in which a backend track evicted from the volatile portion of the shared memory resides is compared with the threshold in order to determine whether to move the backend track to the non-volatile portion of the shared memory.