Versions tested: 1.0.5
Optimal parameters: default
Authors: Julian Seward
Algorithms: RLE+BWT+MTF+HUF
Notable peformances: -


bzip2 compresses files using the Burrows-Wheeler block sorting text compression algorithm, and Huffman coding. Compression is generally considerably better than that achieved by more conventional LZ77/LZ78-based compressors, and approaches the performance of the PPM family of statistical compressors.
the program documentation


The compressor is featured in the BWT comparison and bzip2 benchmark.

Shelwien provided binaries with IPP: and i70a, i70s, i70i are from

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Qualified configurations
Ver Rating CPR DPR S.E. R.E. Ratio C. kB/s D. kB/s
1.0.5 16 20 4 83 0 2.932 6885 19294

Version info

1.0.5, tar: yes, mode: 64-bit, crc32: 908306ce, decoder: 41 kB, tested: 2010 Apr 14
compression: bzip2.exe -k <args> <src>
decompression: bzip2.exe -d -k <cfile>