Re: Delta compression not so effective

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On Wed, Mar 1, 2017 at 1:30 PM, Linus Torvalds
<torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
> For example, the sorting code thinks that objects with the same name
> across the history are good sources of deltas.

Marius has indicated he is working with jar files. IME jar and war
files, which are zipfiles containing Java bytecode, range from not
delta-ing in a useful fashion, to pretty good deltas.

Depending on the build process (hi Maven!) there can be enough
variance in the build metadata to throw all the compression machinery
off.

On a simple Maven-driven project I have at hand, two .war files
compiled from the same codebase compressed really well in git. I've
also seen projects where storage space is ~101% of the "uncompressed"
size.

my 2c,



m
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 - ask interesting questions  ~  http://linkedin.com/in/martinlanghoff
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