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7z Compression Sizes

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2003-09-18
2003-09-19
  • Nobody/Anonymous

    all,

    I am new to this so please bear with me.
    1. Is there another place to get more examples of the -m switch parameters?  I keep wondering which of the various methods and parameter mixes is better and what the compression speed might be for a standard file(exe, txt, ...), and then how to accurately specify the parms.

    2. I have 9.1 mb, all text file which compresses to 1,418,257 bytes using the panels with these options: "maximum compression, DO NOT  create solid, create SFX, format 7z".  When I use the following command in a batch file the final file is 1,502,777.  The command is:
    7z a -sfx -wc:\temp AllSeqsSFX\asm.exe "mystf\allmfseqfiles\asmsrce.asm" -mx=7 -ms=off.

    i expected the same or close results.  the first result is the desired one since the file will go onto a 3.5 diskette.

    3. Is there a way to make the file smaller without using the Ultra method which was extremely slow?

    Thanks, Larry

     
    • Igor Pavlov

      Igor Pavlov - 2003-09-18

      2) command line version uses other sfx module.
      That sfx modle is not compressed with UPX.
      You can compress sfx with UPX yourself.
      Or you can specify other sfx module.
      3) try -m0=ppmd:o16:mem64m. But maybe it will not help.

       
    • Nobody/Anonymous

      thank you, your suggestion made the difference i needed.

       

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