JDK-8019378 : Win32GraphicsDevice.isPixFmtSupported[native]() extremely slow
  • Type: Bug
  • Component: client-libs
  • Sub-Component: 2d
  • Affected Version: 7u45,8
  • Priority: P3
  • Status: Closed
  • Resolution: Duplicate
  • Submitted: 2013-06-28
  • Updated: 2013-11-12
  • Resolved: 2013-07-16
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Related Reports
Duplicate :  
Duplicate :  
There has been one report from a NetBeans user so far. The report is from JDK 8 used with NetBeans on Windows 7, and the profiling information shows 20509ms spent in the method sun.awt.Win32GraphicsDevice.isPixFmtSupported[native]().

The AWT thread dump (attached also here) and more information about user's setup is available at

The original NetBeans bug:

This same problem was also reported against JDK 7u45 see <https://netbeans.org/bugzilla/show_bug.cgi?id=238267>.