Preferential selection of candidates for delta compression
US8918390B1 · kind B1 · utility
62Cited by
6References
14Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 13, 2012 |
| Grant date | Dec 23, 2014 |
| Priority date | — |
| Expiry date | Sep 25, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M7/3091
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A computer-implemented method and system for improving efficiency in a delta compression process in a data storage system selects a data chunk to delta compress and generates a sketch for the selected data chunk. The method and system search for a set of candidate data chunks with a matching sketch and rank the set of candidate data chunks by degree of sketch matching. The set of candidate data chunks are tie-braked using location status data for each candidate and the selected data chunk is delta compressed with a selected candidate data chunk. The delta compressed selected data chunk is then stored in a data storage system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.