| Versions tested: | 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 1.00 |
| Rating: | unrated |
| Performance C/D: | unrated |
| Optimal parameters: | cmid.cfg |
| Links: | http://www.cs.fit.ed... |
| Authors: | Matt Mahoney |
| Algorithms: | CM, X86, LZP |
| Notable peformances: | - |
ZPAQ is a proposed open standard for highly compressed data, currently under development. When completed, all versions will remain compatible, even as new compression algorithms are developed. ZPAQ compressed files and archives contain a description of the compression algorithm, allowing older programs to extract files produced by newer programs.the program website 2009, March 11
(Have info that should be added here? E-mail.)
The program does not store directory tree, therefore TAR is used.
| Ver | Rating | CPR | DPR | S.E. | R.E. | Ratio | C. kB/s | D. kB/s | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CompressionRatings.Com | ||||||||||||
| cmax.cfg | ||||||||||||
| 0.01 | 147 | 141 | 153 | 17 | 71 | 3.661 | 52 | 51 | ||||
| 0.02 | 147 | 0% | -0.7% | 0% | 0% | 0% | 3.661 | 0% | 51 | -1.9% | 52 | +2.0% |
| 0.03 | 153 | +4.1% | +4.3% | +5.2% | 0% | +8.5% | 3.675 | +0.4% | 52 | +2.0% | 52 | 0% |
| 0.04 | 153 | 0% | 0% | -0.6% | -5.9% | +5.2% | 3.698 | +0.6% | 49 | -5.8% | 49 | -5.8% |
| 0.05 | 145 | -5.2% | -5.5% | -4.4% | -12% | +6.2% | 3.751 | +1.4% | 41 | -16% | 42 | -14% |
| 0.06 | 143 | -1.4% | -0.7% | -2.0% | -1.2% | 3.752 | +0% | 41 | 0% | 41 | -2.4% | |
| 0.07 | 137 | -4.2% | -5.1% | -4.0% | - | -2.4% | 3.758 | +0.2% | 38 | -7.3% | 39 | -4.9% |
| 0.08 | 151 | +10% | +10% | +9.7% | +15% | +9.6% | 3.758 | 0% | 42 | +11% | 43 | +10% |
| 0.09 | 157 | +4.0% | +4.9% | +3.2% | 0% | +3.3% | 3.757 | -0% | 44 | +4.8% | 44 | +2.3% |
| 1.00 | 157 | 0% | 0% | 0% | 0% | 0% | 3.757 | 0% | 44 | 0% | 44 | 0% |
| cmid.cfg | ||||||||||||
| 0.08 | 211 | 202 | 219 | 34 | 63 | 3.464 | 120 | 119 | ||||
| 0.09 | 222 | +5.2% | +5.0% | +5.5% | +5.9% | +4.8% | 3.464 | 0% | 126 | +5.0% | 126 | +5.9% |
| 1.00 | 221 | -0.5% | -0.5% | 0% | 0% | 0% | 3.465 | +0% | 125 | -0.8% | 125 | -0.8% |
| cmin.cfg | ||||||||||||
| 0.01 | 4 | 4 | 4 | 43 | 0 | 2.096 | 906 | 871 | ||||
| 0.02 | 4 | 0% | 2.096 | 0% | 902 | -0.4% | 863 | -0.9% | ||||
| 0.03 | 4 | 0% | 2.093 | -0.1% | 883 | -2.1% | 872 | +1.0% | ||||
| 0.04 | 11 | +175% | +150% | +175% | +37% | 2.231 | +6.6% | 924 | +4.6% | 906 | +3.9% | |
| 0.05 | 11 | 0% | 2.229 | -0% | 951 | +2.9% | 904 | -0.2% | ||||
| 0.06 | 10 | - | -1.7% | 2.229 | 0% | 926 | -2.6% | 884 | -2.2% | |||
| 0.07 | 10 | - | -1.7% | 2.229 | 0% | 913 | -1.4% | 866 | -2.0% | |||
| 0.08 | 32 | +220% | +250% | +200% | +42% | 2.419 | +8.5% | 1036 | +13% | 812 | -6.2% | |
| 0.09 | 32 | 0% | 0% | 0% | 0% | 2.419 | 0% | 1024 | -1.2% | 808 | -0.5% | |
| 1.00 | 32 | 0% | 0% | 0% | 0% | 2.419 | 0% | 1037 | +1.3% | 804 | -0.5% | |