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  1. JDK
  2. JDK-4126791

Japanese text display is considerably slow on Solaris

    Details

    • Subcomponent:
      2d
    • Resolved In Build:
      1.2fcs
    • CPU:
      generic, sparc
    • OS:
      generic, solaris_2.6
    • Verification:
      Not verified

      Description

      Japanese text rendering by 2D with JFC compoenent is considerably very slow.

      Try open file kanji.* attached using Notepad under JFC demo in the release. Size of file is same but content is different.
      kanji.sjis containes all sjis char but kanji.ascii only containes ASCII character.


      CPU time usage(user time) to complete open and display a file taken by "time" of MKS toolkit:

                  JDK1.2beta3n JDK1.1.5
      kanji.ascii 8.86s 0.01s
      kanji.sjis 18.98s 0.01s

      Measurement was taken on

      WinNT version 4.0 Japanese running on P2 300MHz w/ 128M RAM.

      Acceptable degradation of speed performance to render Japanese character
      is 20%. So, it should be arround 9sec.

      And it is really painfull to scroll up and down the text if Japanese.
      (It looks not scrolling but paging.)



      [jim.hu@prc 1998-07-10]
      This is also a big problem for Chinese. I have attached a program
      and data files to reproduce it. You can run it in C, ja and zh
      locale to see its performance.

      uncompress stresstester.tar.Z
      tar xvf stresstester.tar
      type runit
      press the button "Load text".

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            People

            • Assignee:
              jwarzech Joe Warzecha (Inactive)
              Reporter:
              sishidasunw Shoji Ishida (Inactive)
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              • Created:
                Updated:
                Resolved:
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