GoKawiilBZip3 compressor beats BZip2 and rivals xz on Perl source archive test
BZip3, an open-source successor to BZip2, combines a Burrows-Wheeler transform with suffix arrays, an LZ77/PPM-style matching pass, and an order-0 context-mixing entropy coder to boost both compression ratio and speed. In a benchmark compressing every historical Perl 5 release bundled into one tar file, BZip3 with a large block size produced a much smaller output than bzip2, xz, and zstd, while also decompressing faster than the other tools tested.
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Compression tools are judged on a trade-off between ratio, speed, and memory use, and BZip3's results suggest it can beat established tools like xz and zstd on real-world source code archives without sacrificing decompression speed. Because it's installable via standard package managers and build tools, developers working with large text or code repositories could adopt it as a drop-in replacement for smaller, faster archives.
- BZip3 achieved roughly half the compressed size of xz and a third of bzip2 on a large Perl source archive test.
- It uses a mix of Burrows-Wheeler transform, suffix arrays, LZ77-style matching, and PPM-style context modeling for better compression.
- Despite higher memory use at large block sizes, BZip3 decompressed faster than bzip2, xz, and comparably to zstd.
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