看来7ZIP各方面得到了优化
之前就是觉得在Deflate mode下的解压速度比较慢
这两天把之前写的打包系统更新一下再看看

HISTORY of the 7-Zip
--------------------

  Version 4.46 beta           2007-05-25
  --------------------------------------
    - New fast compression mode for Deflate method in Zip and GZip.
    - New "Compress shared files" option in GUI and -ssw switch.
    - Some bugs were fixed.
    - New localization: Norwegian Nynorsk.


  Version 4.45 beta           2007-04-17
  --------------------------------------
    - Now it's possible to specify the size of solid block and the number
      of CPU threads in "Add to archive" dialog box.
    - Default dictionary size was increased: Normal: 16 MB, Max: 32 MB.
    - Speed optimizations.
    - Benchmark was improved (new "b" command in command line version).
    - The number of DLL files was reduced.
    - Now it's possible to associate 7-zip with combined types like .tbz2
    - switch -mhcf=off is not supported now.
    - If -t{Type} switch is not specified, 7-Zip now uses extension of archive to
      detect the type of archive.
    - Some bugs were fixed.
    - New localization: Welsh.


  Version 4.44 beta           2007-01-20
  --------------------------------------
    - Speed optimizations for LZMA, Deflate, BZip2 and unRAR.
    - 7-Zip now supports file pathnames longer than 260 characters.
    - Some bugs were fixed.
    - New localizations: Bangla, Bashkir, Nepali.