It uses a parallel buffered radix matchfinder and some optimizations from Zstandard. A high compression derivative, called LZ4_HC, is available, trading customizable CPU time for compression ratio.įast LZMA2 v1.0.1 is a LZMA2 compression algorithm, 20% to 100% faster than normal LZMA2 at levels 5 and above, but with a slightly lower compression ratio. It features an extremely fast decoder, with speed in multiple GB/s per core (0.71 Bytes/cycle). LZ4 v1.9.3 is lossless compression algorithm, providing compression speed at 400 MB/s per core (0.16 Bytes/cycle). It offers a very wide range of compression / speed trade-off, while being backed by a very fast decoder. Zstandard v1.4.9 is a real-time compression algorithm, providing high compression ratios. In order to support multithreading for those addional codecs, this project depends on the Multithreading Library. This is the place for the active development of p7zip to include major modern codecs such as Brotli, Fast LZMA2, LZ4, LZ5, Lizard and Zstd. A new p7zip fork with additional codecs and improvements (forked from ).
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