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Night Owl 6
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Night Owl's Shareware - PDSI-006 - Night Owl Corp (1990).iso
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028a
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arc_comp.zip
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ARC_COMP
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Text File
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1991-11-10
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5KB
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111 lines
Relative comparison of compression size and times for several programs.
ARJ produced the smallest files and is used as the reference. (LHARC
was close and about 6% faster) Fastest compression was with ARCA.
The % difference for size is relative differences of the final
compressed files to each other. Check the listing from FV below for
relative differences to original files. All tests were run on 8 MHz 286
AT. Programs and all files were on a RAM drive.
Notes:
ARC 7.1 (System Enhancement Associates) offers menu or command
line operation.
LHA (LHARC) is free for commercial or private use.
Check programs for specific licence requirements.
***
Total file size before compression was 1032526.
***
Program SIZE % DIFF TIME (sec) %DIFF
------------------------------------------------------------------
ARCA 595733 35.8 91 -57.3
ARC 7.1 453630 3.4 307 44.1
ARJ 2.1 438600 0 213 0 (reference)
LHA 2.13 443682 1.2 200 -6.1
PKZIP 1.1 471251 7.4 176 -17.4
A listing from FV (File View) is given below. To save space, the date,
time, and CRC were removed from the FV listing.
The file types were by extension, .DOC - ASCII text; .PCX - graphics;
.T$0 - Timeline data; .EXE, .COM - executable; .OBJ - C compiler object file;
.WK1 - Lotus; .H - file with C compiler, .WP - word processor file with
graphics.
Archive: ARCTST.LZH
Name Length Method SF Size now
============ ======== ======== ==== ========
TESTFIL.DOC 247172 -lz5- 73 65829
TESTFIL.PCX 279430 -lz5- 66 92840
TESTFIL.T$0 48012 -lz5- 70 14061
TESTFIL.WK1 6731 -lz5- 64 2390
TESTFIL1.EXE 22860 -lz5- 41 13389
TESTFIL2.EXE 337162 -lz5- 38 208962
TESTFILE.COM 34557 -lz5- 33 23134
TESTFILE.H 15438 -lz5- 73 4022
TESTFILE.OBJ 10586 -lz5- 35 6847
TESTFILE.WP 30578 -lz5- 61 11824
============ ======== ======== ==== ========
*total 10 1032526 LHARC 57% 443682
Archive: ARCTST.ZIP
Name Length Method SF Size now
============ ======== ======== ==== ========
TESTFIL.DOC 247172 Imploded 73 66676
TESTFIL.PCX 279430 Imploded 61 106513
TESTFIL.T$0 48012 Imploded 68 15081
TESTFIL.WK1 6731 Imploded 62 2553
TESTFIL1.EXE 22860 Imploded 37 14218
TESTFIL2.EXE 337162 Imploded 35 217695
TESTFILE.COM 34557 Imploded 31 23690
TESTFILE.H 15438 Imploded 72 4200
TESTFILE.OBJ 10586 Imploded 30 7367
TESTFILE.WP 30578 Imploded 59 12250
============ ======== ======== ==== ========
*total 10 1032526 ZIP 1.0 54% 471251
Archive: ARCTST7.ARC
Name Length Method SF Size now
============ ======== ======== ==== ========
TESTFIL.DOC 247172 Crushed 72 68768
TESTFIL.PCX 279430 Crushed 66 93916
TESTFIL.T$0 48012 Crushed 70 14359
TESTFIL.WK1 6731 Crushed 64 2412
TESTFIL1.EXE 22860 Crushed 40 13506
TESTFIL2.EXE 337162 Crushed 36 213119
TESTFILE.COM 34557 Crushed 32 23462
TESTFILE.H 15438 Crushed 72 4237
TESTFILE.OBJ 10586 Crushed 34 6973
TESTFILE.WP 30578 Crushed 59 12528
============ ======== ======== ==== ========
*total 10 1032526 ARC 7.12 56% 453630
Archive: ARCTEST.ARC
Name Length Method SF Size now
============ ======== ======== ==== ========
TESTFIL.DOC 247172 Crunched 60 97963
TESTFIL.PCX 279430 Crunched 58 117231
TESTFIL.T$0 48012 Crunched 53 22144
TESTFIL.WK1 6731 Crunched 57 2855
TESTFIL1.EXE 22860 Crunched 22 17616
TESTFIL2.EXE 337162 Crunched 18 275158
TESTFILE.COM 34557 Crunched 14 29693
TESTFILE.H 15438 Crunched 56 6728
TESTFILE.OBJ 10586 Crunched 12 9232
TESTFILE.WP 30578 Crunched 44 16821
============ ======== ======== ==== ========
*total 10 1032526 ARC/ARCA 42% 595733
Archive: ARCTST.ARJ
Name Length Method SF Size now
============ ======== ======== ==== ========
TESTFIL.DOC 247172 Comp-1 74 62701
TESTFIL.PCX 279430 Comp-1 66 93113
TESTFIL.T$0 48012 Comp-1 70 14009
TESTFIL.WK1 6731 Comp-1 64 2396
TESTFIL1.EXE 22860 Comp-1 41 13380
TESTFIL2.EXE 337162 Comp-1 38 206910
TESTFILE.COM 34557 Comp-1 33 22890
TESTFILE.H 15438 Comp-1 74 3975
TESTFILE.OBJ 10586 Comp-1 35 6822
TESTFILE.WP 30578 Comp-1 61 11815
============ ======== ======== ==== ========
*total 10 1032526 ARJ 3 57% 438600