Access frequency caching hardware structure
US11467960B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2021 |
| Grant date | Oct 11, 2022 |
| Priority date | — |
| Expiry date | Jul 16, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/682
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An access frequency caching hardware structure has entries each storing an access frequency counter indicative of a frequency of accesses to a corresponding page of a memory address space. Access frequency tracking circuitry is responsive to a given memory access request requesting access to a target page, to determine whether the access frequency caching hardware structure already includes a corresponding entry which is valid and corresponds to the target page. When the structure includes the corresponding entry, a corresponding access frequency counter specified by the corresponding entry is incremented. In response to a counter writeback event associated with a selected access frequency counter corresponding to a selected page, an update is made to a global access frequency counter corresponding to the selected page within a global access frequency tracking data structure stored in the memory system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.