Re: git-fetching from a big repository is slow

[Shawn Pearce <spearce@spearce.org>]

"Horst H. von Brand" <vonbrand@inf.utfsm.cl> wrote:
> Shawn Pearce <spearce@spearce.org> wrote:
> 
> [...]
> 
> > And yet I get good delta compression on a number of ZIP formatted
> > files which don't get good additional zlib compression (<3%).
> 
> .zip is something like a tar of the compressed files, if the files inside
> the archive don't change, the deltas will be small.

Yes, especially when the new zip is made using the exact same
software with the same parameters, so the resulting compressed file
stream is identical for files whose content has not changed.  :-)

Since this is actually a JAR full of Java classes which have
been recompiled, its even more interesting that javac produced an
identical class file given the same input.  I've seen times where
it doesn't thanks to the automatic serialVersionUID field being
somewhat randomly generated.

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