Tuesday, January 02, 2007

7zip is amazing

7zip just blew my pants off. Back in the day I though I was edgy when I used bzip2 instead of gzip, but this is just amazing.

I downloaded the full edit history of the Hungarian Wikipedia to run some analysis on it and 7z compressed it to 1/87th of its original size.

barcika:~/wp/huwiki$ du -k *
11502112 huwiki-20061205-pages-meta-history.xml
131808 huwiki-20061205-pages-meta-history.xml.7z
Of course this was superverbose XML, but the compression rate is still very impressive. The same original compressed with bz2 is almost 4 times as big. 7zip gonna be my first choice for archiving large log files.

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