Archive Comparison Test - by Jeff Gilchrist
October 7, 2002 Macintosh Edition


Canterbury Corpus Compression Test

The specifications and configuration of the test computer can be found here.

The Canterbury Corpus file test includes 11 files. The links to download these test files can be found here.

Legend
+ - New program tested
B - Best compression (smallest compressed file)
F - Fastest compression time
Q - Quickest extraction time
O - Best overall (smallest overall score - calculated by adding compress time, extract time, and time it would take to transfer the compressed file over a 28,800bps network)
+HQX - means that the test files were compressed and then BASE-64 encoded.
+TAR - means that the test files were stored together in one TAR file first and then compressed.
+UU - means that the test files were compressed and then UU encoded.

  ACT 2.0 Canterbury Corpus Test              
  Total Files Size (bytes): 2,816,188            
  Name Switches

Compress
Time

Extract
Time

Compressed
Size

Overall
Score

Compress
Ratio

Bits per
Byte

     

(seconds)

(seconds)

(bytes)

(seconds)

(%)

(b/B)

+B Stuffit Deluxe 7.0 -> SITX (Max)

7.99

7.69

517,419

159.41

81.63

1.4698

O Stuffit Deluxe 6.5 -> SIT (Max)

6.95

4.58

521,252

156.32

81.49

1.4807

+ Stuffit Deluxe 7.0 -> SITX (Med)

6.47

5.19

532,944

159.70

81.08

1.5139

+ Stuffit Deluxe 7.0 -> BZIP+TAR (Max)

6.80

2.57

562,863

165.72

80.01

1.5989

  BZIP2 0.0b2+TAR 400k

7.33

4.04

565,776

168.53

79.91

1.6072

+ Stuffit Deluxe 7.0 -> BZIP+TAR (Fast)

6.45

2.28

567,318

166.32

79.86

1.6116

  Stuffit Deluxe 6.5 -> BZIP+TAR (Max)

7.30

3.94

569,032

169.30

79.79

1.6165

  BZIP2 0.0b2+TAR 900k

7.39

3.88

572,225

170.22

79.68

1.6255

  Stuffit Deluxe 6.5 -> BZIP+TAR (Fast)

7.88

4.05

584,018

174.16

79.26

1.6590

  MacRAR 2.5b5 -m4 -mm -md1024 -s

68.48

1.99

602,260

237.76

78.61

1.7109

Q MacRAR 2.5b5 -mm -md1024

35.49

1.49

607,210

205.65

78.44

1.7249

  MacRAR 2.5b5 -m4 -mm -md1024

43.24

1.70

608,071

213.85

78.41

1.7274

+ Stuffit Deluxe 7.0 -> GZIP+TAR (Max)

10.43

1.83

677,425

200.43

75.95

1.9244

+ Stuffit Deluxe 7.0 -> ZIP (Max)

9.01

1.76

677,878

199.07

75.93

1.9257

+ Stuffit Deluxe 7.0 -> SIT+HQX (Max)

9.06

8.70

703,580

213.20

75.02

1.9987

  Stuffit Deluxe 6.5 -> SIT+HQX (Max)

8.07

5.32

708,516

210.20

74.84

2.0127

  Stuffit Deluxe 6.5 -> ZIP (Max)

11.10

3.51

721,815

215.11

74.37

2.0505

  PKZIP 2.03 (Max)

14.85

2.58

723,250

218.33

74.32

2.0546

  SmartZip 1.0.1 (none)

19.01

4.48

727,188

225.49

74.18

2.0657

  Stuffit Deluxe 6.5 -> GZIP+TAR (Max)

13.33

3.96

727,990

219.51

74.15

2.0680

  MacGZIP 1.1 + TAR (Level 9)

17.69

2.36

732,275

223.46

74.00

2.0802

  ZIPIT 2.1 (Level 9)

18.69

3.41

732,871

225.68

73.98

2.0819

  MacGZIP 1.1 + TAR (Level 6)

4.02

2.41

734,716

210.52

73.91

2.0871

  PKZIP 2.03 (Normal)

6.53

2.53

738,630

214.24

73.77

2.0982

  ZIPIT 2.1 (Level 5)

3.77

3.62

747,791

215.11

73.45

2.1243

  Stuffit Deluxe 6.5 -> SIT (Fast)

3.76

2.28

768,502

219.51

72.71

2.1831

  PKZIP 2.03 (Fast)

4.16

2.73

768,514

220.37

72.71

2.1831

  Stuffit Deluxe 6.5 -> LHA (Max)

7.07

1.89

773,347

223.78

72.54

2.1969

+ Stuffit Deluxe 7.0 -> SITX (Fast)

6.66

2.28

793,743

229.42

71.81

2.2548

+ Stuffit Deluxe 7.0 -> ZIP (Fast)

3.16

1.91

794,910

225.88

71.77

2.2581

+ Stuffit Deluxe 7.0 -> GZIP+TAR (Fast)

4.38

1.73

796,242

227.29

71.73

2.2619

  Stuffit Deluxe 6.5 -> LHA (Fast)

7.51

2.56

810,632

235.25

71.22

2.3028

F Stuffit Deluxe 6.5 -> ZIP (Fast)

2.39

3.62

819,105

233.54

70.91

2.3268

  Stuffit Deluxe 6.5 -> GZIP+TAR (Fast)

5.45

3.96

863,297

249.21

69.35

2.4524

  MacGZIP 1.1 + TAR (Level 1)

2.43

2.69

866,888

245.92

69.22

2.4626

  ZIPIT 2.1 (Level 1)

3.01

3.59

868,339

247.81

69.17

2.4667

+ Stuffit Deluxe 7.0 -> ZIP+UU (Max)

9.92

2.86

934,006

272.23

66.83

2.6532

  Stuffit Deluxe 6.5 -> ZIP+UU (Max)

12.14

4.77

994,540

293.17

64.68

2.8252

  MacTAR 4.2.1 (none)

0.88

1.12

2,795,520

778.53

0.73

7.9413

+ Stuffit Deluxe 7.0 -> TAR (none)

1.63

1.64

2,799,104

780.80

0.61

7.9515

  Stuffit Deluxe 6.5 -> TAR (none)

3.48

2.54

2,799,616

783.69

0.59

7.9529

                 
  Best Compression: Stuffit Deluxe 7.0 -> SITX            
  Fastest Compression: Stuffit Deluxe 6.5 -> ZIP            
  Quickest Extraction: MacRAR 2.5b5            
  Best Overall: Stuffit Deluxe 6.5 -> SIT            

 

Legend
+ - New program tested
B - Best compression (smallest compressed file)
F - Fastest compression time
Q - Quickest extraction time
O - Best overall (smallest overall score - calculated by adding compress time, extract time, and time it would take to transfer the compressed file over a 28,800bps network)
+HQX - means that the test files were compressed and then BASE-64 encoded.
+TAR - means that the test files were stored together in one TAR file first and then compressed.
+UU - means that the test files were compressed and then UU encoded.

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