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  1. JDK
  2. JDK-4969969

JDWP: Performance regression on using debbuger (step speed improvements)

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    • b40
    • x86
    • windows_xp


      ###@###.### 2003-12-17

      J2SE Version (please include all output from java -version flag):
          java version "1.5.0-beta"
          Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-beta-b30)
          Java HotSpot(TM) Client VM (build 1.5.0-beta-b30, mixed mode)

      Does this problem occur on J2SE 1.3 or 1.4.x? Yes / No (pick one)
          No, 1.4.2 only takes 1 sec. b30 takes 18 sec.

      Operating System Configuration Information (be specific):
          Windows XP (version 5.1 Service Pack 1 (Build 2600))

      Hardware Configuration Information (be specific):

          Platform configuration:

          CPU: Intel 32bit Single Processor
          Processor Speed: 1893 MHz

          Operating System:
          Windows XP (version 5.1 Service Pack 1 (Build 2600))

          DirectX version: DirectX 8.1 or greater

          DirectX display devices:
          Device 0:
            Resolution (width x height x depth): 1024 x 768 x 32
            Device driver nv4_disp.dll version 6.13.10.3638

          GDI display devices:
          Primary: Name = \\.\DISPLAY1, Description = NVIDIA GeForce4 460 Go (Toshiba)

      Bug Description:

         Testing the VisualMust debugger with B30, there is a problem :
         when running the application step by step and entering into a "super()"
         to create a frame for example, the step takes 18 seconds and 100 % CPU
         (with a Pentium 4, 1900 MHz). With the same machine, with Java 1.4.2.
         the step takes less than 1 second.

      Steps to Reproduce (be specific):
        - unzip VisualMust.zip
        - run java -Xmx128m -classpath ./VisualMust.jar;./VisualMustDocs.jar;./JbcBeansEvaluation.jar;c:/jdk/lib/tools.jar VisualMust

            ohair Kelly Ohair (Inactive)
            tyao Ting-Yun Ingrid Yao (Inactive)
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