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- Path: sparky!uunet!spool.mu.edu!torn!watserv2.uwaterloo.ca!watmath!undergrad.math.waterloo.edu!djtooley
- From: djtooley@undergrad.math.waterloo.edu (Doug Tooley)
- Subject: PKZIP 2.04c vs. ARJ 2.39b (and LHA/ZOO) Compression Results ** UPDATED
- Message-ID: <C0KnA7.1sr@undergrad.math.waterloo.edu>
- Followup-To: comp.compression
- Summary: PKZIP is fast, but unreliable. I'm going with ARJ
- Keywords: archive compress ARJ PKZIP LHA ZOO
- Organization: University of Waterloo
- Date: Sat, 9 Jan 1993 05:30:07 GMT
- Lines: 129
-
- *** (Updated to include ARJ v2.39b - Please see notes) ***
-
- Results of Compression Testing: PKZIP v2.04c. Jan 08/92
-
- Data: Contents of ARJ230.EXE and PKZ204C.EXE
- (with duplicate filenames renamed/included)
- Total Size: 720937 bytes
- Archivers: PKZIP204c PKZIP110 PKZIP193a ARJ230 ARJ239b LHA213 ZOO210
- Machine: 386/33, 10M RAM \w 128k BIOS Shadow RAM (\w QEMM)
- Drive: Seagate ST296N (84M) SCSI controller (no s/w cache)
- Timing: Norton Utilities' TM.EXE v4.50
- Execution: MSDOS BATch file
-
- Results:
-
- TIME FILENAME SIZE COMMAND
-
- Sorted by Size
-
- 27 secs ZIP204X ZIP 358090 pkzip -ex
- 35 secs ARJ239JM ARJ 359598 arj a -jm
- 55 secs ARJ230JM ARJ 359725 arj a -jm
- 33 secs ARJ239 ARJ 359734 arj a
- 36 secs ARJ239M1 ARJ 359736 arj a -m1
- 23 secs ZIP204 ZIP 360153 pkzip
- 21 secs ZIP204N ZIP 360153 pkzip -en
- 47 secs ARJ230 ARJ 360228 arj a
- 48 secs ARJ230M1 ARJ 360230 arj a -m1
- 32 secs ARJ239M2 ARJ 361577 arj a -m2
- 22 secs ZIP193 ZIP 362995 pkzip
- 44 secs ARJ230M2 ARJ 363519 arj a -m2
- 48 secs LHA213 LZH 368780 lha a
- 19 secs ZIP204F ZIP 369940 pkzip -ef
- 94 secs ZOO210H ZOO 370481 zoo ah
- 29 secs ARJ239M3 ARJ 370557 arj a -m3
- 35 secs ARJ230M3 ARJ 371169 arj a -m3
- 26 secs ZIP110 ZIP 381182 pkzip
- 15 secs ZIP204S ZIP 393321 pkzip -es
- 27 secs ARJ239M4 ARJ 400019 arj a -m4
- 69 secs ZOO210 ZOO 459204 zoo a
- 24 secs ARJ230M0 ARJ 723239 arj a -m0
- 18 secs ARJ239M0 ARJ 723239 arj a -m0
- 14 secs ZIP2040 ZIP 724559 pkzip -e0
-
- Sorted by Time
-
- 14 secs ZIP2040 ZIP 724559 pkzip -e0
- 15 secs ZIP204S ZIP 393321 pkzip -es
- 18 secs ARJ239M0 ARJ 723239 arj a -m0
- 19 secs ZIP204F ZIP 369940 pkzip -ef
- 21 secs ZIP204N ZIP 360153 pkzip -en
- 22 secs ZIP193 ZIP 362995 pkzip
- 23 secs ZIP204 ZIP 360153 pkzip
- 24 secs ARJ230M0 ARJ 723239 arj a -m0
- 26 secs ZIP110 ZIP 381182 pkzip
- 27 secs ARJ239M4 ARJ 400019 arj a -m4
- 27 secs ZIP204X ZIP 358090 pkzip -ex
- 29 secs ARJ239M3 ARJ 370557 arj a -m3
- 32 secs ARJ239M2 ARJ 361577 arj a -m2
- 33 secs ARJ239 ARJ 359734 arj a
- 35 secs ARJ230M3 ARJ 371169 arj a -m3
- 35 secs ARJ239JM ARJ 359598 arj a -jm
- 36 secs ARJ239M1 ARJ 359736 arj a -m1
- 44 secs ARJ230M2 ARJ 363519 arj a -m2
- 47 secs ARJ230 ARJ 360228 arj a
- 48 secs ARJ230M1 ARJ 360230 arj a -m1
- 48 secs LHA213 LZH 368780 lha a
- 55 secs ARJ230JM ARJ 359725 arj a -jm
- 69 secs ZOO210 ZOO 459204 zoo a
- 94 secs ZOO210H ZOO 370481 zoo ah
-
- Sorted by Name (for the scroll-back impaired)
-
- 47 secs ARJ230 ARJ 360228 arj a
- 55 secs ARJ230JM ARJ 359725 arj a -jm
- 24 secs ARJ230M0 ARJ 723239 arj a -m0
- 48 secs ARJ230M1 ARJ 360230 arj a -m1
- 44 secs ARJ230M2 ARJ 363519 arj a -m2
- 35 secs ARJ230M3 ARJ 371169 arj a -m3
- 33 secs ARJ239 ARJ 359734 arj a
- 35 secs ARJ239JM ARJ 359598 arj a -jm
- 18 secs ARJ239M0 ARJ 723239 arj a -m0
- 36 secs ARJ239M1 ARJ 359736 arj a -m1
- 32 secs ARJ239M2 ARJ 361577 arj a -m2
- 29 secs ARJ239M3 ARJ 370557 arj a -m3
- 27 secs ARJ239M4 ARJ 400019 arj a -m4
- 48 secs LHA213 LZH 368780 lha a
- 26 secs ZIP110 ZIP 381182 pkzip
- 22 secs ZIP193 ZIP 362995 pkzip
- 23 secs ZIP204 ZIP 360153 pkzip
- 14 secs ZIP2040 ZIP 724559 pkzip -e0
- 19 secs ZIP204F ZIP 369940 pkzip -ef
- 21 secs ZIP204N ZIP 360153 pkzip -en
- 15 secs ZIP204S ZIP 393321 pkzip -es
- 27 secs ZIP204X ZIP 358090 pkzip -ex
- 69 secs ZOO210 ZOO 459204 zoo a
- 94 secs ZOO210H ZOO 370481 zoo ah
-
-
- My comments:
-
- ** WARNING **
- PKZIP 2.04c is apparently far from bug free. Some of these include:
- The possibility of data-loss, especially wrt multiple volumes.
- Problems with volume label storage, and their "more advanced PC" handing
- is reported to have errors. Also, CRC checking has been failing
- in some cases where it shouldn't have. "From what I have read on the net."
-
- I congratulate PKWARE on the speed and compression of their program, but
- the best way to damage consumer confidence is to release a long-awaited
- product and have it "full of bugs". It leads one to ask: "Testing?!?"
-
- I also congratulate Robert K. Jung on his Beta version of ARJ. I was
- quite impressed by the improved speed (especially at the maximum (-jm)
- compression level, which is what I use normally.) I much prefer ARJ's
- handing of volume splitting over that of the new PKZIP. ARJ has proven
- itself to have the options, ease of use, reliability and now
- speed for me to use it as my #1 compression/archiving program.
- (I sound like a commercial. :)
-
- My previous comments heralded PKZIP as #1, but with their bug reports
- and ARJ's improved speed I have decided to wait the extra 7 seconds
- for a more little reliability. I'm going to continue to use ARJ.
-
- --- Doug
-
- ...."I haven't lost my mind, I know exactly where I left it."................
- Doug Tooley 3B Co-Op CS student at U of Waterloo, Ontario, Canada
- djtooley@{descartes|napier|cayley}.uwaterloo.ca
-