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- Xref: sparky comp.sys.atari.st:13038 comp.sys.atari.st.tech:4639
- Path: sparky!uunet!usc!wupost!waikato.ac.nz!comp.vuw.ac.nz!actrix!Steven.Wells
- Newsgroups: comp.sys.atari.st,comp.sys.atari.st.tech
- Subject: ZOO/ZIP/ARC/LZH
- Message-ID: <1992Sep1.014304.22255@actrix.gen.nz>
- From: Steven.Wells@bbs.actrix.gen.nz
- Date: Tue, 1 Sep 1992 01:43:04 GMT
- Sender: Steven.Wells@actrix.gen.nz (Steven Wells)
- Organization: Actrix Information Exchange
- Keywords: Archivers, ZIP, ZOO, ARC, LHarc, Speed, Compression.
- Summary: ZIP wins! See for yourself!
- Lines: 92
-
-
- Here is a comparison of the four most used Archiving utilities on the
- Atari ST (And indeed - most 16 & 32 bit machines)
-
- It was performed on an Atari 520STFM with 1meg of RAM. Using a 300k
- FAST-RAMdisk for all file operations. Write verify was turned off.
- No TSR's or ACCessories were loaded.
-
- Results may differ very slightly on some machines. (Speed will
- obviously increase when being used on accelerated machines)
-
- Comparisons of, ZOO, ZIP, ARC and LHarc are described below. This is
- using versions, that to my knowledge are the latest versions available
- to the general public. It is not definitive, but it gives a good idea
- of which techniques are best to use when you want quick & effective
- compression - (or slow and in-effective). The results are quite
- surprising with the popular LHarc coming after both ARC and ZIP in
- the overall ratings, and being beaten by the default compression
- mode of ZOO!!
-
- De-compression has not been tested - as times are usually pretty
- similar in rating.
-
-
- Text: (181246 bytes)
-
- Time taken:
-
- ZOO (Default) 44 secs
- ZIP (Default) 45 secs
- ARC 46 secs
- ZIP (Deflate) 51 secs
- LHarc 74 secs
- ZOO (Slow mode) 100 secs
-
-
- Compression: (% of original size)
-
- ZIP (Deflate) 33.5
- LHarc 35
- ZOO (Slow mode) 35 (61 bytes bigger than LHarc)
- ZIP (Default) 36
- ZOO (Default) 41
- ARC 41 (739 bytes bigger than Default ZOO)
-
-
-
- Binary: (155722 bytes)
-
- Time taken:
-
- ZIP (Default) 36 secs
- ZOO (Default) 45 secs
- ARC 50 secs
- ZIP (Deflate) 61 secs
- LHarc 62 secs
- ZOO (Slow mode) 90 secs
-
-
- Compression (% of original size)
-
- ZIP (Deflate) 37
- LHarc 38
- ZOO (Slow mode) 38 (10 bytes bigger than LHarc)
- ZIP (Default) 41
- ZOO (Default) 56
- ARC 58
-
-
- The overall ratings - taking into consideration, the time taken,
- and the relative compression gained within that time (the total
- averages), are as follows:
-
- Speed Compression
-
- The winner: ZIP (Default) 1st 3rd
- #2 : ZIP (Deflate) 4th 1st
- #3 : ZOO (Default) 3rd 4th
- #4 : ARC 2nd 5th
- #5 : LHarc 5th 2nd=
- Last : ZOO (High compression method) 6th 2nd=
-
-
- Versions used:
-
- ST-ZIP v2
- LHarc v2.01L
- ARC v6.02
- ZOO v2.14
- --
- Wells_S@Kosmos.WCC.Govt.NZ / Steven.Wells@BBS.Actrix.Gen.NZ
- $$$$$$$$ Nil Mortifi Sine Lucre $$$$$$$$
-