Compression routines - please include 7-Zip

Andrew Berg bahamut at digital-signal.net
Mon Aug 20 22:20:24 CEST 2007


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Henry Hertz Hobbit wrote:
> It is so blisteringly fast that it is time to give credit where
> credit is due.  I had it updating our (my?) PAC filter.  Even with
> copying the executable for 7zip.exe on Windows it is so blisteringly
> fast I can't believe it.  I am used to the forty years that Microsoft
> takes.  When it is done almost instantaneously (the word comes from
> Latin to Français to Anglais) it shocked me!
You're referring to PPMd, right? LZMA is pretty slow (though the
compression it achieves is almost always worth it). Plus, PPMd is
much, much better than LZMA with text.
> It is only marginally better than
> BZIP2 but it is infinitely better than ZIP or RAR.
To be fair, RAR isn't that bad. I'm not suggesting Werner use it, but
it shouldn't be grouped with zip.


I'd like to see where this goes.

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