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  1. JDK
  2. JDK-6890258

6u18b03: 10% to 20% FX startup performance regression in javaws and plugins

    Details

    • Subcomponent:
    • Introduced In Build:
      b03
    • Introduced In Version:
    • CPU:
      generic
    • OS:
      generic

      Description

      javaws and plugin benchmarks (from startup2 refworkload benchmark) run with fx1.3b111(promoted build b07)
      and jdk6u18b03 in "warm" mode (deployed cache is kept untouched) show from 10% to 20% regression
      comparing to previous jdk6u18b01.

      10% - 20% is about 100ms in average.

      Here is the detailed comparison:

      ==============================================================================
      6u18b01_fx1.3b07:
        Benchmark Samples Mean Stdev Geomean Weight
        app_animpath_jws 20 907.70 25.68
        app_fx_jws 20 511.60 30.03
        app_jmc_jws 20 724.15 10.52
        app_mediacenter_jws 20 1754.60 35.86
        app_swing_jws 20 547.60 14.68
        applet_animpath_jpi 20 1087.40 15.68
        applet_fx_jpi 20 722.00 32.91
        applet_jmc_jpi 20 1099.10 56.67
        applet_mediacenter_ 20 1978.85 16.25
        applet_swing_jpi 20 705.45 11.57
      ==============================================================================
      6u18b03_fx1.3b07
        Benchmark Samples Mean Stdev %Diff P Significant
        app_animpath_jws 20 915.55 38.05 -0.86 0.450 *
        app_fx_jws 20 615.55 10.64 -20.32 0.000 Yes
        app_jmc_jws 20 801.40 21.65 -10.67 0.000 Yes
        app_mediacenter_jws 20 1851.50 33.02 -5.52 0.000 Yes
        app_swing_jws 20 614.75 9.13 -12.26 0.000 Yes
        applet_animpath_jpi 20 1147.60 47.09 -5.54 0.000 Yes
        applet_fx_jpi 20 790.60 12.75 -9.50 0.000 Yes
        applet_jmc_jpi 20 997.65 12.63 9.23 0.000 Yes
        applet_mediacenter_ 20 2030.55 12.86 -2.61 0.000 Yes
        applet_swing_jpi 20 794.65 12.82 -12.64 0.000 Yes
      ==============================================================================


      The regression is observed in all benchmarks except applet_jmc_jpi and app_animpath_jws.
      applet_jmc_jpi actually shows stable improvements.
      app_animpath_jws looks like fluctuate too much, so hard to compare.

      Please see also results here:
       http://spb-phare.russia.sun.com/compare?ids=16541,16581


      I also tried to reproduce the regression using 2 simple benchmarks app_swing_jws and app_swing_jws
      and the regression is easy reproduced:

      ==============================================================================
      ./6u18b01/results/: Benchmark Samples Mean Stdev Geomean Weight
        startup2 10 623.68 23.33
          app_swing_jws 10 556.30 42.39 0.50
          applet_swing_jpi 10 700.10 9.70 0.50
      ==============================================================================
      ./6u18b03/results/:
        Benchmark Samples Mean Stdev %Diff P Significant
        startup2 10 697.99 15.08 -11.92 0.000 Yes
          app_swing_jws 10 614.20 7.47 -10.41 0.002 Yes
          applet_swing_jpi 10 793.60 35.01 -13.36 0.000 Yes
      ==============================================================================


      The similar regressions are observed in "coldapp" mode (application jars are purged from deployment cache) as well:
       http://spb-phare.russia.sun.com/compare?ids=16555,16584

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              • Assignee:
                igor Igor Nekrestyanov (Inactive)
                Reporter:
                epavlova Ekaterina Pavlova
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