From 64c286be5fc9b64e394b03a125532bce5cfae5a4 Mon Sep 17 00:00:00 2001 From: Tino Reichardt Date: Sun, 28 May 2017 13:48:16 +0200 Subject: [PATCH] Update README.md Add more info on the Lizard levels... --- README.md | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) diff --git a/README.md b/README.md index 4be6b4a2..8bec54ea 100644 --- a/README.md +++ b/README.md @@ -8,20 +8,23 @@ You can install it in two ways: 2. just the codec plugin, which goes to your existing 7-Zip installation ## Codec overview -1. [Zstandard] is a real-time compression algorithm, providing high compression ratios. It offers a very wide range of compression / speed trade-off, while being backed by a very fast decoder. +1. [Zstandard] v1.2.0 is a real-time compression algorithm, providing high compression ratios. It offers a very wide range of compression / speed trade-off, while being backed by a very fast decoder. - Levels: 1..22 -2. [Brotli] is a generic-purpose lossless compression algorithm that compresses data using a combination of a modern variant of the LZ77 algorithm, Huffman coding and 2nd order context modeling, with a compression ratio comparable to the best currently available general-purpose compression methods. It is similar in speed with deflate but offers more dense compression. +2. [Brotli] v.0.6.0 is a generic-purpose lossless compression algorithm that compresses data using a combination of a modern variant of the LZ77 algorithm, Huffman coding and 2nd order context modeling, with a compression ratio comparable to the best currently available general-purpose compression methods. It is similar in speed with deflate but offers more dense compression. - Levels: 0..11 -3. [LZ4] is lossless compression algorithm, providing compression speed at 400 MB/s per core (0.16 Bytes/cycle). It features an extremely fast decoder, with speed in multiple GB/s per core (0.71 Bytes/cycle). A high compression derivative, called LZ4_HC, is available, trading customizable CPU time for compression ratio. +3. [LZ4] v1.7.5 is lossless compression algorithm, providing compression speed at 400 MB/s per core (0.16 Bytes/cycle). It features an extremely fast decoder, with speed in multiple GB/s per core (0.71 Bytes/cycle). A high compression derivative, called LZ4_HC, is available, trading customizable CPU time for compression ratio. - Levels: 1..12 -4. [LZ5] is a modification of LZ4 which gives a better ratio at cost of slower compression and decompression. +4. [LZ5] v1.5 is a modification of LZ4 which gives a better ratio at cost of slower compression and decompression. - Levels: 1..15 -5. [Lizard] is an efficient compressor with very fast decompression. It achieves compression ratio that is comparable to zip/zlib and zstd/brotli (at low and medium compression levels) at decompression speed of 1000 MB/s and faster. - - Levels: 10..49 (10..19 for method1, 20..29 for method2, ...) +5. [Lizard] v1.0 is an efficient compressor with very fast decompression. It achieves compression ratio that is comparable to zip/zlib and zstd/brotli (at low and medium compression levels) at decompression speed of 1000 MB/s and faster. + - Levels 10..19 (fastLZ4) are designed to give about 10% better decompression speed than LZ4 + - Levels 20..29 LIZv1) are designed to give better ratio than LZ4 keeping 75% decompression speed + - Levels 30..39 (fastLZ4 + Huffman) adds Huffman coding to fastLZ4 + - Levels 40..49 (LIZv1 + Huffman) give the best ratio, comparable to zlib and low levels of zstd/brotli, but with a faster decompression speed ## 7-Zip ZStandard Edition (full setup, with GUI and Explorer integration) @@ -208,12 +211,12 @@ If you find this project useful, you can... - 7-Zip ZS Version 17.00 - [Brotli] Version 0.6.0 - - [Lizard] Version 2.0 + - [Lizard] Version 1.0 - [LZ4] Version 1.7.5 - [LZ5] Version 1.5 - [ZStandard] Version 1.2.0 -/TR 2017-05-25 +/TR 2017-05-28 [7-Zip]:http://www.7-zip.org/ [lzip]:http://www.nongnu.org/lzip/