Methods of cache preloading on a partition or a context switch
US10268588B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2017 |
| Grant date | Apr 23, 2019 |
| Priority date | — |
| Expiry date | Oct 10, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/602
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A scheme referred to as a “Region-based cache restoration prefetcher” (RECAP) is employed for cache preloading on a partition or a context switch. The RECAP exploits spatial locality to provide a bandwidth-efficient prefetcher to reduce the “cold” cache effect caused by multiprogrammed virtualization. The RECAP groups cache blocks into coarse-grain regions of memory, and predicts which regions contain useful blocks that should be prefetched the next time the current virtual machine executes. Based on these predictions, and using a simple compression technique that also exploits spatial locality, the RECAP provides a robust prefetcher that improves performance without excessive bandwidth overhead or slowdown.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.