Merge pull request #74 from Cyan4973/fastMode

Fast mode

1 files changed, 50 insertions, 42 deletions

diff --git a/README.md b/README.md
index f960e7d..453bb01 100644
--- a/README.md
+++ b/README.md
@@ -1,60 +1,68 @@
 LZ4 - Extremely fast compression
 ================================
 
-LZ4 is lossless compression algorithm, providing compression speed at 400 MB/s per core, scalable with multi-cores CPU. It also features an extremely fast decoder, with speed in multiple GB/s per core, typically reaching RAM speed limits on multi-core systems.
-A high compression derivative, called LZ4_HC, is also provided. It trades CPU time for compression ratio.
+LZ4 is lossless compression algorithm, 
+providing compression speed at 400 MB/s per core, 
+scalable with multi-cores CPU. 
+It also features an extremely fast decoder, 
+with speed in multiple GB/s per core, 
+typically reaching RAM speed limits on multi-core systems.
+
+A high compression derivative, called LZ4_HC, is also provided. 
+It trades CPU time for compression ratio.
 
 |Branch      |Status   |
 |------------|---------|
 |master      | [![Build Status](https://travis-ci.org/Cyan4973/lz4.svg?branch=master)](https://travis-ci.org/Cyan4973/lz4) |
 |dev         | [![Build Status](https://travis-ci.org/Cyan4973/lz4.svg?branch=dev)](https://travis-ci.org/Cyan4973/lz4) |
+|visual      | [![Build status](https://ci.appveyor.com/api/projects/status/v6kxv9si529477cq?svg=true)](https://ci.appveyor.com/project/YannCollet/lz4) |
+
 
 
 > **Branch Policy:**
 
 > - The "master" branch is considered stable, at all times.
-> - The "dev" branch is the one where all contributions must be merged before being promoted to master.
->  - If you plan to propose a patch, please commit into the "dev" branch. Direct commit to "master" are not permitted.
-> - Feature branches can also exist, for dedicated testing of larger modifications before merge into "dev" branch.
+> - The "dev" branch is the one where all contributions must be merged 
+    before being promoted to master.
+>   + If you plan to propose a patch, please commit into the "dev" branch. 
+      Direct commit to "master" are not permitted.
+> - Feature branches can also exist,
+    for dedicated tests of larger modifications before merge into "dev" branch.
 
 Benchmarks
 -------------------------
 
-The benchmark uses the [Open-Source Benchmark program by m^2 (v0.14.2)](http://encode.ru/threads/1371-Filesystem-benchmark?p=33548&viewfull=1#post33548) compiled with GCC v4.6.1 on Linux Ubuntu 64-bits v11.10,
-The reference system uses a Core i5-3340M @2.7GHz.
-Benchmark evaluates the compression of reference [Silesia Corpus](http://sun.aei.polsl.pl/~sdeor/index.php?page=silesia) in single-thread mode.
-
-<table>
-  <tr>
-    <th>Compressor</th><th>Ratio</th><th>Compression</th><th>Decompression</th>
-  </tr>
-  <tr>
-    <th>LZ4 (r101)</th><th>2.084</th><th>422 MB/s</th><th>1820 MB/s</th>
-  </tr>
-  <tr>
-    <th>LZO 2.06</th><th>2.106</th><th>414 MB/s</th><th>600 MB/s</th>
-  </tr>
-  <tr>
-    <th>QuickLZ 1.5.1b6</th><th>2.237</th><th>373 MB/s</th><th>420 MB/s</th>
-  </tr>
-  <tr>
-    <th>Snappy 1.1.0</th><th>2.091</th><th>323 MB/s</th><th>1070 MB/s</th>
-  </tr>
-  <tr>
-    <th>LZF</th><th>2.077</th><th>270 MB/s</th><th>570 MB/s</th>
-  </tr>
-  <tr>
-    <th>zlib 1.2.8 -1</th><th>2.730</th><th>65 MB/s</th><th>280 MB/s</th>
-  </tr>
-  <tr>
-    <th>LZ4 HC (r101)</th><th>2.720</th><th>25 MB/s</th><th>2080 MB/s</th>
-  </tr>
-  <tr>
-    <th>zlib 1.2.8 -6</th><th>3.099</th><th>21 MB/s</th><th>300 MB/s</th>
-  </tr>
-</table>
-
-The LZ4 block compression format is detailed within [lz4_block_format.txt](lz4_block_format.txt).
-
-For streaming unknown amount of data and compress files of any size, a frame format has been published, and can be consulted within the file LZ4_Frame_Format.html .
+The benchmark uses the [Open-Source Benchmark program by m^2 (v0.14.3)]
+compiled with GCC v4.8.2 on Linux Mint 64-bits v17.
+The reference system uses a Core i5-4300U @1.9GHz.
+Benchmark evaluates the compression of reference [Silesia Corpus]
+in single-thread mode.
+
+|  Compressor       | Ratio   | Compression | Decompression |
+|  ----------       | -----   | ----------- | ------------- |
+|  memcpy           |  1.000  | 4200 MB/s   |   4200 MB/s   |
+|  RLE64 v3.0       |  1.029  | 2800 MB/s   |   2800 MB/s   |
+|  density -c1      |  1.592  |  700 MB/s   |    920 MB/s   |
+|**LZ4 fast (r129)**|  1.607  |**680 MB/s** | **2220 MB/s** |
+|**LZ4 (r129)**     |**2.101**|**385 MB/s** | **1850 MB/s** |
+|  density -c2      |  2.083  |  370 MB/s   |    505 MB/s   |
+|  LZO 2.06         |  2.108  |  350 MB/s   |    510 MB/s   |
+|  QuickLZ 1.5.1.b6 |  2.238  |  320 MB/s   |    380 MB/s   |
+|  Snappy 1.1.0     |  2.091  |  250 MB/s   |    960 MB/s   |
+|  density -c3      |  2.370  |  190 MB/s   |    185 MB/s   |
+|  zlib 1.2.8 -1    |  2.730  |   59 MB/s   |    250 MB/s   |
+|**LZ4 HC (r129)**  |**2.720**|   22 MB/s   | **1830 MB/s** |
+|  zlib 1.2.8 -6    |  3.099  |   18 MB/s   |    270 MB/s   |
+
+The LZ4 block compression format is detailed within [lz4_Block_format].
+
+Block format doesn't deal with header information, 
+nor how to handle arbitrarily long files or data streams.
+This is the purpose of the Frame format.
+Interoperable versions of LZ4 should use the same frame format, 
+defined into [lz4_Frame_format].
 
+[Open-Source Benchmark program by m^2 (v0.14.3)]: http://encode.ru/threads/1371-Filesystem-benchmark?p=34029&viewfull=1#post34029
+[Silesia Corpus]: http://sun.aei.polsl.pl/~sdeor/index.php?page=silesia
+[lz4_Block_format]: lz4_Block_format.md
+[lz4_Frame_format]: lz4_Frame_format.md