Versions tested: 0.9, 1.0, 1.3
Optimal parameters: -c2t4
Links: http://fastcompressi...
lz4-1.3.zip
lz4-1.0.zip
lz4-0.9.zip
Authors: Yann Collet
Algorithms: LZ
Notable peformances: Application3, Image1, Qualifying1

lz4

Version 0.9 was submitted on February 27, 2011. Multi-threading optimizations. (-t defines number of threads.)

v1.0 was submitted on September 18, 2011.

v1.3 was submitted on October 17, 2011. Changes include: "-c1 mode can now be multithreaded, -c2 mode is slightly faster, new dynamic memory allocation strategy should use less memory (especially for decoding)".

(Have info that should be added here? E-mail.)


Note that we use identical -t switch for decompression.

Qualified configurations
Ver Rating CPR DPR S.E. R.E. Ratio C. kB/s D. kB/s
-c0t1 (-t1)
0.9 1 1 0 404 0 1.962 232785 487694
1.0 1 +22% 1.975 +0.7% 275396 +18% 557557 +14%
-c0t4 (-t4)
0.9 1 3 0 632 0 1.962 500883 485344
1.0 2 + +15% 1.975 +0.7% 545847 +9.0% 550133 +13%
-c1t1
1.0 2 2 2 167 0 2.226 35746 560564
-c2t4
1.0 5 5 3 306 0 2.278 61131 551640
-t2
0.9 1 2 0 566 0 1.962 400582 491188
Disqualified (why) configurations (with qualification ratings)
Ver Rating CPR DPR S.E. R.E. Ratio C. kB/s D. kB/s
-c0t1 (-t1)
1.3 crash while decompressing (app1)
-c0t2
1.3 crash while decompressing (app1)
-c0t3
1.3 crash while decompressing (app1)
-c0t4 (-t4)
1.3 crash while decompressing (app1)
-c1t4
1.3 crash while decompressing (app1)
-c2t4
1.3 crash while decompressing (app1)

Version info

1.3, tar: yes, mode: 32-bit, crc32: cf133875, decoder: 43 kB, tested: 2011 Oct 18
compression: lz4.exe <args>s <src> <cfile>
decompression: lz4.exe -dt1s <cfile> <src>
0.9, tar: yes, mode: 32-bit, crc32: ee8d3c2e, decoder: 37 kB, tested: 2011 Oct 07
compression: lz4.exe -c <args> <src> <cfile>
decompression: lz4.exe -u -t1 <cfile> <src>
1.0, tar: yes, mode: 32-bit, crc32: a4050f9d, decoder: 42 kB, tested: 2011 Oct 07
compression: lz4.exe <args> <src> <cfile>
decompression: lz4.exe -dt1 <cfile> <src>