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  1. JDK
  2. JDK-8115937

8.0-b74: up to 25% performance regression in WebNode.GUIMark2-Vector in hw pipeline on Windows platforms

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      There is up to 25% performance regression in WebNode.GUIMark2-Vector in hw pipeline on Windows platforms.
       WinXP-Mid-Range: 17%, 29.05 -> 24.54 fps
       Win7-High-Ned: 30%, 31.15 -> 22.95 fps

      The regression first appeared in build 8.0-graphics-scrum-h570 which contains the fix
      for RT-26537 "Deadlock in WebNode.GUIMark2-Bitmap benchmark".

      Interesting, the regression is not observed when running in fullspeed mode.
      It is only seen in default non-fullspeed mode. I guess the performance regression
      is because extra synchronization introduced by the fix.

      Steps to run the benchmark
      > cd JFX_WS/tests/performance/WebNodeTestSuite/
      > ant
      > java -cp "JFX_HOME/rt/lib/jfxrt.jar;./dist/WebNodeTestSuite.jar;../FXBenchmark/dist/FXBenchmark.jar;../../../import/benchmarks-2.1.1/benchmarks-2.1.1.jar"
             jrockit.bm.Main webnodetestsuite.bm.GUIMark2Benchmark -i 1 -wt 0 -tr 30 -resource guimark2-vector.html

            peterz Peter Zhelezniakov
            epavlova Ekaterina Pavlova
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              Created:
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