plzip_modded - parallel 64bit lzma (de)compressor and a direct 4x4:lzma replacement

[elit]

Originally Posted by panker1992

7zip 18.03 that was released, now supports parallel decompression on lzma2/xz
and also it supports up to 40% more speed on single thread

except that how plzip fares on ratio ?

Really? I have to check, if true its a progress finally, although still surely lack bad entropy skipping techniques like 4x4 have. Anyway when I tested against FA 4x4:xlzma It did compress a tiny bit better(~0.5%), probably because of missing entropy skipping. When binded to 4x4 as 4x minilzip it was almost same speed with again tiny better ratio. Like maybe 6s slower(of 1:40min) and 20-60mb less compressed size vs xlzma(of 2-3gb original). Btw without 4x4's cool entropy skipping compression time was 4-5min vs 1:40min, in line with xz and 7z vs 4x4 and 2-3x slower just like them. So you see the difference, now imagine compressing 50gb+ data...

In nutshell they are all pretty much same lzma's to me, its the smart techniques that make differences.