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From: macman@wpi.wpi.edu (Chris Silverberg)
Newsgroups: comp.sys.mac.apps,comp.sys.mac.misc
Subject: Re: Compression Test Results
Message-ID: <14556@wpi.wpi.edu>
Date: 20 Aug 90 04:31:05 GMT
References: <90231.2126503XMQGAA@CMUVM.BITNET>
Reply-To: macman@wpi.wpi.edu (Chris Silverberg)
Organization: Worcester Polytechnic Institute, Worcester ,MA
Lines: 62

In article <90231.2126503XMQGAA@CMUVM.BITNET> 3XMQGAA@CMUVM.BITNET (Sari Khoury) writes:
>I did a test of the 3 major compressors and here are the results I got:
>
>
>File                  |   STD    | Diamond 5.1 | Compactor 1.2
>                      |  Better  |   Compact   |
>--------------------------------------------------------------
>Microsoft Word   669K |  447K    |    467K     |      458K
>Systems Tools(1) 481K |  309K    |    318K     |      308K
>SoundEdit File   50K  |  42K(2)  |     45K     |       44K
>--------------------------------------------------------------
>Total           1200K |  798K    |    830K     |      810K


There are a couple problems with this test. First, DiskDoubler, one of the
hotest sellers at Boston MacWorld wasn't tested. Secondly, there are no
timings... this might be a key issue... so, I'll just whip up the test I
did myself.


============================================================================
Files used: Zterm package:
                            Application   = 144K
                            Doc (write)   =  54K
                            Doc (write)   =   4K
                            Zterm doc     =   1K
                            Text doc      =   4K
                            Text doc      =   3K
                            Text doc      =   3K

                          Total           = 213K
----------------------------------------------------------------------------

             App &  |          |          |          |          |          |
            method  |   STD    |   STD    | Compactor| DskDoublr| DskDoublr|
 Test               |   Fast   |  Better  |          | method A | method B |
=============================================================================
TEST: UNCOMPRESSION |                     |          |                     |
 of files in        |        1:03         |   0:41   |        0:56         |
 Stuffit 1.5.1      |                     |          |                     |
-----------------------------------------------------------------------------
TEST: COMPRESS      |   1:25   |   6:36   |   1:57   |   0:56   |   1:38   |
                    |   140K   |   110K   |   109K   |   146K   |   125K   |
-----------------------------------------------------------------------------
TEST: UNCOMPRESSION |   1:15   |   1:53   |   1:08   |   0:39   |   1:51   |
 of files in their  |   1:15   |   1:53   |   1:08   |   0:39   |   1:51   |
 own format         |          |          |          |          |          |
=============================================================================

I hope this makes sense. The two uncompression tests are time tests, while
the compression test is both time and size. This test is far from complete.
I want to test Diamond, and test more files, sound files, graphic files.
I also want to do a report on the ups and downs of the feature selection,
user interface, and price, all of which are important as the numbers.

- Chris
 
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   Chris Silverberg                     AOL:   Silverberg
   Worcester Polytechnic Institute      GEnie: C.Silverberg
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