Date: Wed, 01 Nov 2000 08:46:25 -0600 From: Dave Glowacki <dglo@ssec.wisc.edu> To: kientzle@acm.org Cc: "Daniel C. Sobral" <dcs@newsguy.com>, Patrick Bihan-Faou <patrick@rageagainst.com>, libh@FreeBSD.ORG Subject: Re: BOF at BSDCon: FreeBSD Installer, Packages System Message-ID: <200011011446.IAA07292@hyde.ssec.wisc.edu> In-Reply-To: Your message of "Wed, 01 Nov 2000 00:09:12 PST." <39FFCFA8.BCF5425@acm.org>
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Tim Kientzle wrote:
> "Daniel C. Sobral" wrote:
> > It would surprise me. I think you are grossly overestimating tar.gz
> > advantage. Anyway, the ports tree is very different from the source tree
> > or the ports sources.
>
> My earlier numbers used default compression for all tests.
> Using maximum compression for both ZIP and GZip gives different
> numbers, but the same conclusion:
>
> /usr/ports
> tar.gz size: 7,454,638
> ZIP size: 14,947,231
>
> If you don't trust my numbers, feel free to try it yourself:
>
> cd <target dir> && zip -r9 - . | wc
> cd <target dir> && tar -cf - . | gzip -9 | wc
One point I haven't seen anyone else make is that any
compression method wins with more raw data.
If your <target dir> above is /usr/ports, you're unfairly
biasing things in favor of tar.gz. Individual packages
are *much* smaller than /usr/ports and thus won't get the
same compression rate. The tar.gz versions will be smaller
because they're compressing the entire package rather than
compressing individual files, but I don't think the savings
will be quite as dramatic, except possibly for mega-packages
like emacs or X11.
> I have written a set of tools to automate the maintenance of link
> directories. They're really very simple. Would you like to see them?
Your earlier description sounds a lot like the GNU 'stow' system.
You might want to look at that:
http://www.gnu.org/software/stow/manual.html
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