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  1. JDK
  2. JDK-4752334

Regression: Some J2DBench tests are 3-4 times slower on Win XP for 1.4.0_03b1

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    • Subcomponent:
      2d
    • Resolved In Build:
      03
    • CPU:
      x86
    • OS:
      windows_xp
    • Verification:
      Verified

      Description


      J2DBench is much slower on 1.4.0_03b1 compared to 1.4.0_02b2 (repspin of b2)
      It appears to only affect Win XP so far. I've tested on 2k and NT and Sparc 2.8, the results look ok with these os's.

      I've selected one test to show the regression.
      About 10 out of the ~200 tests show regression.
      The setup file for this test is attached.

      Results at http://latte.ireland/results/1.4.0_03/J2DBench/XPPro/

      I also installed Service Pack 1 on Xp to see if it would
      make a difference. No difference noticed.


      Below is a table of results :

      Draws/Sec for 100X100 xBGR Bitmask Image Scaled 1.5x

      OS: 140_02b2/3 140_03b1

      XP (1st box) 261 67
      XP (1st with SP 1) 262 67
      XP (2nd) 145 40.7
      XP (3rd) 145 36
      NT 163 156
      2K 160 145
      Sparc 2.8 34 34


      ###@###.### 2002-09-24

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              Assignee:
              chegar Chris Hegarty
              Reporter:
              coffeys Sean Coffey
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