| Versions tested: | 0.2a |
| Optimal parameters: | lzma:32m:ht4:mc16 |
| Links: | http://freearc.org |
| Authors: | Bulat Ziganshin |
| Algorithms: | LZ+HUF, LZ+ARI, BWT/ST+MTF/WFC |
| Notable peformances: | Application1, Application4, Game1, Game2, OS1, Pitches1, Text2 |
A parallel driver for the compression library used in freearc. The quote below is from the program version history that mentiones some of the features:
0.2a 4x4-history.txt0.1 Multithreaded compression
Overlapped I/O
Tornado and LZMA:ht4 are used
Blockwise compression0.2 Fast compression modes made even faster
* direct i/o to compression buffers
* larger blocks to avoid disk trashing
* MM tables disabled in -2/-3 modes
Multi-threaded decompression, also with direct i/o
Fast text compression modes 1t..4t using grzip
* now 4x4 is 10x faster than lzturbo on ENWIK9!
Win32 & Linux versions0.2a Fixed bug in Tornado
(Have info that should be added here? E-mail.)
0.2a freezes decompressing Audio1. Compressing with some of the presets (6 and upwards) fail possibly due to out of memory.
| Ver | Rating | CPR | DPR | S.E. | R.E. | Ratio | C. kB/s | D. kB/s | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | ||||||||||||
| 0.2a | 0 | 0 | 0 | 253 | 0 | 1.805 | 310201 | 334859 | ||||
| 2 | ||||||||||||
| 0.2a | 24 | 41 | 4 | 902 | 0 | 2.383 | 246439 | 279141 | ||||
| 3 | ||||||||||||
| 0.2a | 65 | 106 | 11 | 1182 | 0 | 2.556 | 220626 | 289757 | ||||
| 4t | ||||||||||||
| 0.2a | 104 | 171 | 18 | 209 | 2 | 3.273 | 15323 | 19786 | ||||
| lzma:32m:ht4:mc16 | ||||||||||||
| 0.2a | 455 | 449 | 543 | 281 | 56 | 3.848 | 7538 | 107764 | ||||
| Ver | Rating | CPR | DPR | S.E. | R.E. | Ratio | C. kB/s | D. kB/s | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 4 | ||||||||||||
| 0.2a | crash while decompressing (aud1) | |||||||||||
| 5 | ||||||||||||
| 0.2a | crash while decompressing (aud1) | |||||||||||