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Terminology used for abbreviated command names |
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System Configuration |
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| pc1-<algo> |
pcompress -D -c <algo> -l <Comp
level> -L -P -s 64m |
HP Pavilion dv6 |
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| pc2-<algo> |
pcompress -G -c <algo> -l <Comp
level> -L -P -s 64m |
8GB RAM |
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| gzip |
gzip -<Compression level> |
Core i5 M430, 2.27 GHz |
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| bzip2 |
bzip2 -k -<Compression level> |
500GB Hitachi Drive |
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| pxz |
pxz -z -<Compression level> -k |
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| 7za |
7za a -t7z -mx<Compression level> |
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| xz |
xz -z -<Compression level> -k |
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| xz-ex |
xz -z -<Compression level>e -k |
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| Centos 6.2 x64 VMDK |
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| |
Compression Level 6 |
Compression Level 9 |
Compression Level 14 |
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Size |
Seconds |
Size |
Seconds |
Size |
Seconds |
| Original |
2198056960 |
0 |
2198056960 |
0 |
2198056960 |
0 |
| gzip |
740567851 |
146.33 |
736382695 |
458.63 |
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| bzip2 |
659542606 |
403.51 |
652382215 |
434.6 |
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| pxz |
494948460 |
584.41 |
471228492 |
685.61 |
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| 7za |
483173306 |
718.86 |
467824005 |
970.43 |
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| xz |
487314780 |
1357.83 |
467767516 |
1603.55 |
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| xz-ex |
486732340 |
2059.65 |
467004620 |
2386.57 |
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| pc1-lz4 |
719174766 |
62.65 |
720931517 |
60.75 |
720931517 |
60.6 |
| pc2-lz4 |
692354801 |
64.04 |
694050897 |
59.14 |
694050897 |
60.05 |
| pc1-zlib |
638254609 |
70.19 |
636408489 |
157.87 |
636408489 |
157.2 |
| pc2-zlib |
615237222 |
66.36 |
613444850 |
149.13 |
613444850 |
152.46 |
| pc1-ppmd |
553882562 |
307.43 |
539496914 |
360.62 |
533161339 |
401.83 |
| pc2-ppmd |
533612383 |
296.92 |
519755469 |
347.47 |
513455594 |
383.81 |
| pc1-bzip2 |
597400087 |
139.07 |
596327824 |
142.68 |
596327824 |
143.6 |
| pc2-bzip2 |
575358465 |
137 |
574686705 |
140.78 |
574686705 |
140.51 |
| pc1-libbsc |
541166637 |
233.77 |
541268911 |
241.86 |
541268911 |
242.11 |
| pc2-libbsc |
520789925 |
231.09 |
520919477 |
233.02 |
520919477 |
235.71 |
| pc1-lzmaMt |
488907230 |
383.91 |
483758464 |
443.48 |
482913566 |
487.28 |
| pc2-lzmaMt |
471635354 |
372.66 |
466770709 |
425.89 |
465917079 |
473.8 |
| pc1-lzma |
488907230 |
417.41 |
483786653 |
487.19 |
482917112 |
533.96 |
| pc2-lzma |
471635354 |
399.86 |
466763566 |
467.44 |
465919771 |
520.17 |
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| Linux
3.6 RC2 source tarball |
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Compression Level 6 |
Compression Level 9 |
Compression Level 14 |
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Size |
Seconds |
Size |
Seconds |
Size |
Seconds |
| Original |
489093120 |
0 |
489093120 |
0 |
489093120 |
0 |
| gzip |
104810022 |
28.32 |
103886338 |
46.49 |
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| bzip2 |
84148788 |
83.8 |
82252157 |
90.27 |
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| pxz |
71749684 |
158.64 |
68940152 |
246.11 |
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| 7za |
71618355 |
239.38 |
68627039 |
345.61 |
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| xz |
71111492 |
391.98 |
68642948 |
514.08 |
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| xz-ex |
70683136 |
530.2 |
68134704 |
671.47 |
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| pc1-lz4 |
118560132 |
14.85 |
118594218 |
14.58 |
118594218 |
14.85 |
| pc2-lz4 |
118540102 |
15.99 |
118573945 |
15.81 |
118573945 |
16.08 |
| pc1-zlib |
100516639 |
14.72 |
99812105 |
21.83 |
99812105 |
21.7 |
| pc2-zlib |
100502750 |
16.09 |
99796948 |
21.66 |
99796948 |
21.77 |
| pc1-ppmd |
73286249 |
35.17 |
67755774 |
48.8 |
65500308 |
61.79 |
| pc2-ppmd |
73277859 |
36.11 |
67749329 |
49.66 |
65495538 |
62.8 |
| pc1-bzip2 |
81836925 |
34.17 |
80296748 |
37.59 |
80296748 |
37.45 |
| pc2-bzip2 |
81823372 |
35.53 |
80286786 |
38.65 |
80286786 |
38.87 |
| pc1-libbsc |
68663002 |
46.22 |
68670682 |
49.33 |
68670682 |
49.29 |
| pc2-libbsc |
68655855 |
47.99 |
68663763 |
50.41 |
68663763 |
50.51 |
| pc1-lzmaMt |
71563939 |
130.69 |
69528726 |
160.76 |
69196399 |
172.07 |
| pc2-lzmaMt |
71561169 |
131.46 |
69522944 |
161.4 |
69188542 |
173.51 |
| pc1-lzma |
71563939 |
131.79 |
69529920 |
167.65 |
69196691 |
181.75 |
| pc2-lzma |
71561169 |
131.39 |
69526616 |
168.71 |
69188834 |
181.04 |
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| Silesia
tarball, 2 concatenated copies (100% duplicate) |
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Compression Level 6 |
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Compression Level 9 |
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Compression Level 14 |
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Size |
Seconds |
Size |
Seconds |
Size |
Seconds |
| Original |
413224960 |
0 |
413224960 |
0 |
413224960 |
0 |
| gzip |
135093484 |
27.49 |
133976400 |
63.83 |
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| bzip2 |
109808383 |
85.31 |
108313628 |
91.05 |
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| pxz |
98180180 |
160.11 |
96618484 |
228.61 |
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| 7za |
98523419 |
213.7 |
96514320 |
269.95 |
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| xz |
97506004 |
381.67 |
96548648 |
426.54 |
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| xz-ex |
96974012 |
507.13 |
95894688 |
560.07 |
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| pc1-lz4 |
152476062 |
18.02 |
152498854 |
17.61 |
152498854 |
17.65 |
| pc2-lz4 |
76468562 |
11.7 |
76485884 |
12.19 |
76485884 |
12.22 |
| pc1-zlib |
133217883 |
19.28 |
132214411 |
29.94 |
132214411 |
32.07 |
| pc2-zlib |
66834782 |
11.7 |
66336934 |
19.2 |
66336934 |
19.19 |
| pc1-ppmd |
96629239 |
59.13 |
95488432 |
75.93 |
95029354 |
88.29 |
| pc2-ppmd |
48517203 |
35.75 |
47986866 |
43.81 |
47755478 |
48.99 |
| pc1-bzip2 |
108691733 |
41.5 |
107275558 |
42.97 |
107275558 |
44.13 |
| pc2-bzip2 |
54583321 |
23.31 |
53862691 |
24.78 |
53862691 |
27.44 |
| pc1-libbsc |
94267066 |
55.3 |
94279512 |
58.66 |
94279512 |
58.23 |
| pc2-libbsc |
47393009 |
33.31 |
47397499 |
32.82 |
47397499 |
33.84 |
| pc1-lzmaMt |
100566149 |
131.42 |
98822426 |
154.39 |
98361044 |
169.22 |
| pc2-lzmaMt |
50433093 |
77.22 |
49559485 |
92.15 |
49325341 |
100.91 |
| pc1-lzma |
100566155 |
140.83 |
98832015 |
166.14 |
98361044 |
183.82 |
| pc2-lzma |
50433093 |
84.51 |
49557291 |
101.77 |
49325341 |
108.75 |
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| Program
Files (32Bit Tarball) |
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Compression Level 6 |
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Compression Level 9 |
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Compression Level 14 |
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Size |
Seconds |
Size |
Seconds |
Size |
Seconds |
| Original |
1635530240 |
0 |
1635530240 |
0 |
1635530240 |
0 |
| gzip |
685296551 |
123.42 |
683291050 |
250.71 |
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| bzip2 |
675075536 |
389.83 |
673394199 |
414.83 |
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| pxz |
482715488 |
422.55 |
453443100 |
501.81 |
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| 7za |
466028194 |
557.14 |
448783001 |
750.33 |
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| xz |
473537300 |
1034.43 |
448804992 |
1266.8 |
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| xz-ex |
473137464 |
1389.16 |
448279284 |
1665.99 |
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| pc1-lz4 |
742462944 |
51.87 |
744851626 |
49.4 |
744851626 |
50.05 |
| pc2-lz4 |
721653476 |
54.35 |
723964985 |
53.48 |
723964985 |
51.51 |
| pc1-zlib |
614964582 |
64.22 |
615668349 |
94 |
615668349 |
94.87 |
| pc2-zlib |
596598065 |
64.13 |
597237076 |
93.67 |
597237076 |
95.44 |
| pc1-ppmd |
570230336 |
317.59 |
549581381 |
354.27 |
540817452 |
386.47 |
| pc2-ppmd |
551840596 |
309.48 |
531472490 |
344.53 |
522764924 |
369.63 |
| pc1-bzip2 |
614446415 |
130.32 |
617640207 |
131.24 |
617640207 |
130.98 |
| pc2-bzip2 |
595619423 |
128.86 |
598522263 |
131.14 |
598522263 |
128.41 |
| pc1-libbsc |
543395619 |
222.56 |
543561569 |
227.81 |
543561569 |
225.71 |
| pc2-libbsc |
525116367 |
220.07 |
525226821 |
222.77 |
525226821 |
224.26 |
| pc1-lzmaMt |
472317074 |
314.63 |
466999705 |
355.6 |
466473664 |
376.48 |
| pc2-lzmaMt |
457051451 |
311.34 |
452121585 |
348.59 |
451648428 |
369 |
| pc1-lzma |
472317074 |
329.11 |
466987805 |
381.53 |
466474376 |
400.07 |
| pc2-lzma |
457051451 |
325.62 |
452113362 |
375.57 |
451651535 |
393.39 |
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