JDK-6740231 : High CPU consumption by gray box painter during loading of applets
  • Type: Bug
  • Component: deploy
  • Sub-Component: plugin
  • Affected Version: 6u10
  • Priority: P2
  • Status: Closed
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2008-08-22
  • Updated: 2010-09-08
  • Resolved: 2008-09-24
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JDK 6
6u10 b32Fixed
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Description
It has been observed that while the gray box painter (orange "S" logo) is being displayed, there is extremely high CPU consumption. This appears to be occurring due to a previous fix that went into 6u2; see Comments for details. This is severely impacting the startup time for JavaFX applets.
This shows up with the first launch of the basic Java / Swing version of BubbleMark from http://www.bubblemark.com/ .

Comments
SUGGESTED FIX webrev: http://sa.sfbay.sun.com/projects/deployment_data/6u11/6740231.0 testcase: http://j2se.east.sun.com/deployment/www/tests/1.6.0_11/6740231/
08-09-2008

EVALUATION Fixed typo in fix for 6688396 causing excessive CPU consumption during painting of "S" logo animation. Improved performance measurement around call to applet.init().
31-08-2008

EVALUATION The high CPU consumption in the orange "S" logo animation was introduced in 6u10 with a typo in the fix for 6688396. The problem of long startup time appears to be orthogonal to this issue, however.
29-08-2008