Автор: Bulat_Ziganshin
Дата сообщения: 03.11.2009 00:05
new version:
* disabled caching on decompression (added at Oct20)
* new *experimental* multithreading compression modes -mex1 .. -mex4
* compression meta-algorithm 4x4. for example, 4x4:t4:i2:tor:3:1m means "run 4 threads compressing using tor:3:1m with 2 more threads doing I/O"
New modes -mex1 .. -mex4 are not yet optimized for text compression. But binary files compression is amazing:
Код: -mex1
Compressed 1 file, 690.514.620 => 273.913.476 bytes. Ratio 39.6%
Compression time: cpu 15.18 secs, real 4.36 secs. Speed 158.302 kB/s
Testing time: cpu 9.86 secs, real 2.79 secs. Speed 247.585 kB/s
-mex2
Compressed 1 file, 690.514.620 => 224.948.347 bytes. Ratio 32.5%
Compression time: cpu 41.82 secs, real 11.58 secs. Speed 59.645 kB/s
Testing time: cpu 11.73 secs, real 3.40 secs. Speed 202.973 kB/s
-mex3
Compressed 1 file, 690.514.620 => 204.953.651 bytes. Ratio 29.6%
Compression time: cpu 71.81 secs, real 19.28 secs. Speed 35.808 kB/s
Testing time: cpu 19.31 secs, real 5.30 secs. Speed 130.212 kB/s
-mex4
Compressed 1 file, 690.514.620 => 186.885.523 bytes. Ratio 27.0%
Compression time: cpu 214.63 secs, real 55.79 secs. Speed 12.378 kB/s
Testing time: real 5.19 secs. Speed 132.945 kB/s