ipfs/kubo
GitHub で見るenhancement: tarsnap chunker / importer (Content defined, polynomial, fast converging chunking)
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#3,603 opened on 2017年1月17日
help wantedkind/enhancement
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説明
Version information:
go-ipfs version: 0.4.4
Type: Feature, Enhancement
Priority: P4
Area: Tools, Importer
Description:
Better suited for maximizing deduplication ratio then current Rabin chunker.
Using smaller chunks with faster convergence yields greater space savings, and the benefit depending on dataset can be great in comparison to Rabin.
The mean chunk size used by tarsnap is 64k.
Source: https://github.com/Tarsnap/tarsnap/blob/master/tar/multitape/chunkify.h https://github.com/Tarsnap/tarsnap/blob/master/tar/multitape/chunkify.c
Related: https://moinakg.wordpress.com/2012/11/11/inside-content-defined-chunking-in-pcompress/ https://moinakg.wordpress.com/2012/11/15/inside-content-defined-chunking-in-pcompress-part-2/