[Box Backup] compression

Ben Summers boxbackup at fluffy.co.uk
Thu Jul 8 08:02:01 BST 2004


On 8 Jul 2004, at 06:49, Andreas Schrafl wrote:

> What kind of compression does boxbackup use?
> Just because I got 2139used - 1349 old - 140 deleted files, makes 650 
> actives and the files I backup take up 1833mb of space on the disk. Is 
> quite a good compression :)

It uses zlib, which is used by just about everything. The thing which 
reduces the efficiency is that it can't compress the entire file in one 
go as it needs to store the file as many independent blocks. However, 
it seems to work nicely in practice.

Ben




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