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Re: Binary Efficiency

From: Michael Wood <mwood_at_its.uct.ac.za>
Date: 2003-06-27 10:34:18 CEST

On Thu, Jun 26, 2003 at 01:12:06PM -0400, Clint Chapman wrote:
> Not Exactly, I did 5 more commits on the 10MB CAD file and the db
> directory would grow by about 25 megs every time while the strings
> file was growing by about 3 MB every time. It makes me wonder how
> well the binary diffing is working since the 10MB CAD file compresses
> to 2.3 MB in zip format and I understand the repository is bzipped.

I assume you mean that Subversion compresses the repository using the
same algorithm as bzip2?

As far as I understand it, some nodes in the repository are stored as
deltas against other nodes, while some are stored undeltified. This is
to balance size against speed. There might be some compression other
than the deltification, but it's not bzip2 AFAIK.

Michael Wood <mwood@its.uct.ac.za>
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Received on Fri Jun 27 10:35:51 2003

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