Excerpts from Gao Xiang's message of July 1, 2020 11:50 am: > Anyway, I think LZMA (xz) is still useful and which is more > friendly to fixed-sized output compression than Zstd yet (But > yeah, I'm not familar with all ZSTD internals. I will dig > into that if I've more extra time). Yes, I agree. If you look at the graphs, LZMA2 (xz/7zip) still produces smaller results, even compared to zstd maximum settings, so definitely LZMA2 should be kept, at least for now. I am only suggesting removing LZMA, since it has no benefits over xz and zstd combination (bigger than xz, slower than zstd). >> - modern compressors (xz, lz4, zstd) decompress about as fast for each >> compression level, only requiring more memory > > lz4 has fixed sliding window (dictionary, 64k), so it won't > require more memory among different compression level when > decompressing. Yes, this is true. I tried to simplify among all compressors, but I think I simplified too much. Thanks for clarifying. Cheers, Alex.
