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From Chí-Thanh Christopher Nguyễn <>
Subject [DISCUSS] Providing smaller compressed source tarballs
Date Thu, 10 May 2012 15:50:08 GMT

Currently, the 3.4.0 source tar.bz2 is around 240 MiB. Providing an xz
compressed tarball instead would reduce download size for users who
build AOO from source.

Informal comparison between different compressors:
1697468416 aoo-3.4.0-incubating-src.tar
 251417600 aoo-3.4.0-incubating-src.tar.bz2
 207922176 aoo-3.4.0-incubating-src.tar.xz-6e
 199165952 aoo-3.4.0-incubating-src.tar.xz-7e
 190512128 aoo-3.4.0-incubating-src.tar.xz-8e
 187145216 aoo-3.4.0-incubating-src.tar.xz-9e
 168845312 aoo-3.4.0-incubating-src.tar.zpaq-m3-b256
 168816640 aoo-3.4.0-incubating-src.tar.zpaq-m3
 159088640 aoo-3.4.0-incubating-src.tar.zpaq-m4-b256

ZPAQ compresses even better, but compression/decompression is very slow.
It seems that xz -8e would be a good compromise between CPU/memory usage
and compression ratio. It results in a 24% smaller size compared to
bzip2 -9.

Do you agree or have suggestions/concerns?

Best regards,
Chí-Thanh Christopher Nguyễn

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