Versions tested: 0.95, 1.0
Optimal parameters: -43
Links: lzturbo-1.0.zip
lzturbo.zip
lzturbo094b.zip
lzturbo095.zip
lzturbo-0.94b-unlzturbo5.zip
Authors: Hamid Buzidi
Algorithms: LZ+HUF, LZ+ARI
Notable peformances: Application1, Application3, Application4, Database1, Game1, Game2, Image1, Medical1, Medical2, OS1, PGN1, Pitches1, Qualifying1, Qualifying2, Source1, Text1, Text2

lzturbo

Lzturbo is a high performance lz77 based compressor featuring parallel compression/decompression and overlapping i/o. Lzturbo is specially designed for modern processors and multicore systems.

Features:

the program documentation

 

The author submitted the following configurations in April 11, 2009:

- Benchmark fast compression time: -10, -11, -21, -31, -41
- Benchmark fast decompression: -19, -29, -39
- Benchmark efficiency: -43, -44
- Benchmark highest compression: -59

The author suggested to run -x9 configurations with -p0 and confirmed the program is unstable. (April 22. 2010)

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


0.94 disqualified: the program crashes at startup when compressing (displays help screen when launched without parameters).

0.94 April 13, 2009 version is listed as 0.94a. -19, -29, -39 crash in Application1.

0.94 April 15, 2009 version is listed as 0.94b with only -19, -29, -39, -59 tested as the author requested. For -59 decoding we use the lzturbo-0.94b-unlzturbo5.zip program with -d -p0.

Qualified configurations
Ver Rating CPR DPR S.E. R.E. Ratio C. kB/s D. kB/s
-10
0.95 4 8 0 617 0 2.128 301129 321786
-41
0.95 112 194 18 1059 0 2.732 159760 182052
-43
0.95 113 126 52 524 0 2.957 37311 184017
-44
0.95 87 92 53 428 0 2.938 29788 201847
-p0 -19
0.95 3 2 76 16 0 2.926 999 306951
-p0 -29
0.95 7 6 168 20 0 3.119 1017 309754
-p0 -39
0.95 13 12 294 24 0 3.303 1000 280991
-p0 -59
0.95 29 27 391 25 2 3.670 737 123074
Disqualified (why) configurations (with qualification ratings)
Ver Rating CPR DPR S.E. R.E. Ratio C. kB/s D. kB/s
-10
1.0 crash while decompressing (txt2)
-10 -b1
1.0 crash while decompressing (txt2)
-10 -b64k
1.0 verify error (txt2)
-11
0.95 crash while compressing (q1)
1.0 crash while decompressing (txt2)
-12
1.0 crash while decompressing (txt2)
-19 -b10
0.95 crash while compressing (src1)
-20
1.0 crash while decompressing (txt2)
-20 -b1
1.0 crash while decompressing (txt2)
-20 -b64k
1.0 crash while decompressing (txt2)
-21
0.95 crash while compressing (q1)
1.0 crash while decompressing (txt2)
-22
1.0 crash while decompressing (txt2)
-30
1.0 crash while decompressing (txt2)
-31
0.95 crash while compressing (q1)
1.0 crash while decompressing (txt2)
-32
1.0 crash while decompressing (txt2)
-39 -b10
0.95 crash while compressing (src1)
-42 -D19 -b64
0.95 crash while compressing (app1)

Version info

1.0, tar: yes, mode: 64-bit, crc32: f15839e8, decoder: 45 kB, tested: 2012 Mar 17
compression: lzturbo.exe -p4 <args> <src> .
decompression: lzturbo.exe -d -p4 <cfile> .
0.95, tar: yes, mode: 32-bit, crc32: 80ea9ac4, decoder: 98 kB, tested: 2010 Apr 17
compression: lzturbo.exe -p4 <args> <src> .
decompression: lzturbo.exe -d -p4 <cfile> .