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PeaZip
Benchmark
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| Firefox
2.0.0.12 (184 files) 20051736 Byte |
Google
Earth 4.2BZXV (927 files) 32676271 Byte |
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| size
(B) |
% |
time
(msec) |
size
(B) |
% |
time (msec) | |
low compression group |
||||||
| TAR.BZ2,
normal, PeaZip |
7454467 | 37.18% | 2859 | 10870027 | 33.27% | 4515 |
| ZIP,
normal, PeaZip |
7951171 |
39.65% |
2188 |
11496978 |
35.18% |
3110 |
| ZIP,
"Legacy" *, WinZip |
8154417 |
40.67% |
3320 |
11809430 |
36.14% |
5002 |
medium compression group |
||||||
| RAR,
normal, WinRar |
6937450 |
34.60% |
4132 |
9469733 |
28.98% |
6033 |
| RAR, best, WinRar | 6729919 | 33.56% | 5070 | 9178018 |
28.09% |
6510 |
| TAR.QUAD, normal, PeaZip | 6873975 |
34.28% |
4047 |
9423296 |
28.84% |
5032 |
| ZIP,
"Optimize" **, WinZip |
6999043 |
34.90% |
7095 |
10258099 |
31.39% |
10143 |
| ZIP, PPMd, WinZip | 6736456 |
33.60% |
7028 |
10284840 |
31.47% |
10528 |
high compression group |
||||||
| 7Z, normal, PeaZip | 6011247 | 29.98% | 6235 | 7658621 | 23.44% | 7984 |
| 7Z, ultra, PeaZip | 5839731 | 29.12% | 6781 | 7270500 | 22.25% | 10282 |
| ARC ***, normal, PeaZip | 5962883 | 29.74% | 6859 | 7195896 | 22.02% | 9234 |
| ARC
***,
level 9, PeaZip |
5914970 |
29.50% |
7907 |
7022334 |
21.49% |
12984 |
| TAR.LPAQ5,
standard, PeaZip |
5399372 |
26.93% |
34781 |
7044017 |
21.56% |
53593 |
* WinZip's default
compression settings "Legacy compression (Zip 2.0
compatible)
** WinZip using "Optimize for maximum compression (Use best method for each file type)" switch
*** by PeaZip's default, ARC includes recovery records
** WinZip using "Optimize for maximum compression (Use best method for each file type)" switch
*** by PeaZip's default, ARC includes recovery records
Results: speed and compression ratio 
Results can be grouped in
three categories featuring similar compression ratio, lower % means
better
compression.
Each of the two filesets (Firefox and Google Earth) contains mixed data types, like text, executables and multimedia data (graphics, audio, animations), so the compression ratio reported refers to a generic usage scenario and does not aim to reflect fitness of a given compression algorithm on a specifical data structure.
Since a dual core CPU is used, algorithm's parallelism is taken in account as key factor in performance, see Single core vs dual core benchmark for comparison of speed results using one and two cores.
First group contains results for archive types using algorithms oriented to light and fast compression.
Compression ratio ranges from 40 to 33%; on dual core CPU the fastest compressor is PeaZip using ZIP, while WinZip's legacy ZIP compression is faster on a single core.
Second group balances speed and good compression ratio (34 to 28%), with RAR and QUAD compression generally performing better and faster than WinZip's optimzed and PPMd compression.
Third group is oriented to achieve maximum compression, with results ranging from 29 to 21%; 7Z and ARC shows good efficiency, expecially on multicore environments where they may become a viable alternative to compressors of the second group.
Each of the two filesets (Firefox and Google Earth) contains mixed data types, like text, executables and multimedia data (graphics, audio, animations), so the compression ratio reported refers to a generic usage scenario and does not aim to reflect fitness of a given compression algorithm on a specifical data structure.
Since a dual core CPU is used, algorithm's parallelism is taken in account as key factor in performance, see Single core vs dual core benchmark for comparison of speed results using one and two cores.
First group contains results for archive types using algorithms oriented to light and fast compression.
Compression ratio ranges from 40 to 33%; on dual core CPU the fastest compressor is PeaZip using ZIP, while WinZip's legacy ZIP compression is faster on a single core.
Second group balances speed and good compression ratio (34 to 28%), with RAR and QUAD compression generally performing better and faster than WinZip's optimzed and PPMd compression.
Third group is oriented to achieve maximum compression, with results ranging from 29 to 21%; 7Z and ARC shows good efficiency, expecially on multicore environments where they may become a viable alternative to compressors of the second group.
Method
This benchmark compares compression ratio and speed archiving files of multiple types, using WinZip
(with ZIP format), WinRar (with RAR format) and PeaZip (with
multiple archive formats).7-Zip
is not included in this benchmark
since 7Z, BZ and ZIP
compression
in PeaZip is based on standard, proven and reliable 7-Zip componets, so
benchmark results for those formats would be closely equivalent in
PeaZip and 7-Zip.Programs, unless differently specified, were tested using default, out-of-the-box compression settings for the selected format.
"Speed and compression ratio benchmark" table contains results of tests performed on a dual core CPU (which allows multithreaded applications to take speed advantages over single threaded ones) grouped by compression ratio.
"Single core vs dual core benchmark" table compares speed results of same tests (grouped as in the first table) using one and two cores, and showing the % of time spent to perform the same task with multithreading (lower, more efficient multithreading).
Settings
Hardware
The
benchmark
was
conduced on a machine with following configuration: Intel Core 2 Duo
6600 @2400 MHz (dual core); 2GB RAM 800 MHz; 7200 RPM disk 16MB cache;
up to date XP SP2 operating system, NTFS filesystem.
In "Single core vs dual core benchmark" table, single core times were tested setting applications' affinity to let them use a single core only.
In "Single core vs dual core benchmark" table, single core times were tested setting applications' affinity to let them use a single core only.
Software
PeaZip
1.11; WinRar
3.71 ; WinZip 11.1 (Build 7466) .
Other benchmarks
- Maximum
Compression - Comprehensive benchmarks on maximum compression
ratio, efficience and speed compressing variuos data type (text,
graphics, executables, mixed data types).
- Large Text
Compression Benchmark - Authoritative test of best compression
results on large portions of Wikipedia's XML text dump.
PeaZip
project is hosted on:
© 2006 Giorgio Tani
