Greetings earthlings

I just found out that Matt Mahoney's ZPAQ is available as a Debian package
for my system. Didn't even make the connection before between his two hats!

I took a database dump of agi.blue (4.1 MB a text file) and ran it through
various compressors:










*ls -lSrhtotal 9,8M-rw-rw-r-- 1 stefan stefan  580K Jul 29 02:20
concepts.structure.zpaq-rw-rw-r-- 1 stefan stefan  712K Jul 29 02:01
concepts.structure.7z-rw-rw-r-- 1 stefan stefan  731K Jul 29 02:08
concepts.structure.lrz-rw-rw-r-- 1 stefan stefan  817K Jul 29 02:08
concepts.structure.rz-rw-rw-r-- 1 stefan stefan  996K Jul 29 02:22
concepts.structure.gz9-rw-rw-r-- 1 stefan stefan  996K Jul 29 02:22
concepts.structure.zip-rw-r--r-- 1 stefan stefan 1002K Jul 29 02:00
concepts.structure.gz-rw-rw-r-- 1 stefan stefan  4,1M Jul 29 02:08
concepts.structure*

As you can see, ZPAQ wins *by far*. Compressing the file with it took a
handful of seconds.

It seems the king of compression is among us :-)

@Matt: Is there any simple way to get even better compression than with
ZPAQ 1.0/1.10 (those are the two versions I have) with default options?
Also, have there been any attempts to run ZPAQ on a GPU? Would it help?

Stefan

--
Stefan Reich
BotCompany.de // Java-based operating systems

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