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    PA 21.00.18 Action / Test behaves oddly for me on .PA files
    Brian GregoryB

    PA 21.00.18 running on Windows 7 64 bit.
    I made a big .PA file and thought I’d check it was made correctly with Menu / Actions / Test.
    Discovered:
    a) PA always issues a UAC prompt to do this!
    b) PA always says there are many errors in PA files.

    Tech Support
    Convert archive is incorrect for some WinRAR 5 archives
    W

    WinRAR 5 has a rather useful option in some cases, which is to be able to create an archive by replacing identical files with a reference to the first occurrence (hardlink) within the archive.
    In case you choose to convert the file with PowerArchiver to another format, however, the resulting archive does not have all the files. It does not consider those that were present as hardlinks.
    If you do a normal extraction of the RAR archive instead, even with PowerArchivier, all the files are extracted correctly.

    Tech Support

    How can they compress this strong?

    Tech Support
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    • manuangiM
      manuangi
      last edited by

      as an example, download this file:
      http://www.colorpilot.com/chm2pdfstore/Chm2PdfPilot.exe

      then extract it where you like.
      then compress it to ANY archive type PowerArchiver offers the opportunity to, at the strongest ratio.

      the compressed file will always be bigger than the original exe.

      how can that be? I might think they’re using an even stronger compression tool!
      what do you think?

      1 Reply Last reply Reply Quote 0
      • ivanI
        ivan conexware
        last edited by

        Can you tried 7-ZIP format and Ultra compression with Solid option?

        manuangiM 1 Reply Last reply Reply Quote 0
        • manuangiM
          manuangi @ivan
          last edited by

          @ivan:

          Can you tried 7-ZIP format and Ultra compression with Solid option?

          yes, I did…that’s why I posted…

          the exe file you download is 1.881KB, if you decompress it then 7-zip it (with the options you said…which, anyway, are my standard), you get a 2.068KB-big archive…

          :confused:

          S 1 Reply Last reply Reply Quote 0
          • S
            Serhiy @manuangi
            last edited by

            [old image removed] (to save space)

            manuangiM 2 Replies Last reply Reply Quote 0
            • manuangiM
              manuangi @Serhiy
              last edited by

              btw…compressing to a CAB does slightly better…but always 2.037KB vs 1.881KB only

              1 Reply Last reply Reply Quote 0
              • manuangiM
                manuangi @Serhiy
                last edited by

                @NTFS:

                I can confirm this!

                See attached image…

                confirmed…as your image lets see, the exe is an SFX 7-Zip archive…

                they used 7-Zip…so, how come we can’t compress as strongly using 7Z within PA?

                B 1 Reply Last reply Reply Quote 0
                • B
                  By-Tor @manuangi
                  last edited by

                  Confirmed here as well. They must have tweaked the compression options for 7-zip.

                  spwolfS 1 Reply Last reply Reply Quote 0
                  • spwolfS
                    spwolf conexware @By-Tor
                    last edited by

                    @By-Tor:

                    Confirmed here as well. They must have tweaked the compression options for 7-zip.

                    Yes, you can use “stronger” 7zip compression which uses larger dictionary, however in most of the cases it will not lower the compression. PowerArchiver uses 32 MB dictionary with Ultra settings which will take up 400 MB of your RAM, 7zip allows the use of up to 192 MB of memory, taking up to 1.9 GB of RAM…

                    I personally tested it with quite few things and never noticed anything but small difference with larger dictionaries than 32 MB…

                    B manuangiM 2 Replies Last reply Reply Quote 0
                    • B
                      By-Tor @spwolf
                      last edited by

                      @spwolf:

                      I personally tested it with quite few things and never noticed anything but small difference with larger dictionaries than 32 MB…

                      This must be one of those cases where the dictionary size does make a difference. That’s why I put the request for more 7-Zip options in the wishlist. :)

                      1 Reply Last reply Reply Quote 0
                      • manuangiM
                        manuangi @spwolf
                        last edited by

                        @spwolf:

                        Yes, you can use “stronger” 7zip compression which uses larger dictionary, however in most of the cases it will not lower the compression. PowerArchiver uses 32 MB dictionary with Ultra settings which will take up 400 MB of your RAM, 7zip allows the use of up to 192 MB of memory, taking up to 1.9 GB of RAM…

                        I personally tested it with quite few things and never noticed anything but small difference with larger dictionaries than 32 MB…

                        I think you should let your users decide about the amount of memory to set the dictionary to…as noticed, some times that does make a differencd in files final size.

                        I’ve got a testing pc with 4GB of RAM…so I might very well have 1.9GB of those taken for compressing… ;)

                        S 1 Reply Last reply Reply Quote 0
                        • S
                          Serhiy @manuangi
                          last edited by

                          @manuangi:

                          I think you should let your users decide about the amount of memory to set the dictionary to…as noticed, some times that does make a differencd in files final size.

                          I’ve got a testing pc with 4GB of RAM…so I might very well have 1.9GB of those taken for compressing… ;)

                          I don’t have “4GB of RAM” but I agree with you anyway. ;)

                          Thanks!

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                          • B
                            By-Tor @Serhiy
                            last edited by

                            Good, then everyone is agreeable. :)

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