OutOfMemory (PermGen space) under Linux / Firefox when switching bw. applets

Igor Nekrestyanov wrote:

> Context:
> Reloading same FX applet every 5 sec will cause OOM as classes/static state are not released
> (using old plugin to reproduce faster).
>
> Here is the interesting part of reference chains (look for who is holding PluginClassLoaders):
>
> --> sun.awt.X11.XToolkit@0x8bce03d0 (71 bytes) (??:)
> --> class sun.awt.X11.XToolkit (84 bytes) (static field winToDispatcher:)
> --> java.util.HashMap@0x8bce2908 (40 bytes) (field table:)
> --> [Ljava.util.HashMap$Entry;@0x8e4760f8 (136 bytes) (Element 3 of [Ljava.util.HashMap$Entry;@0x8e4760f8:)
> --> java.util.HashMap$Entry@0x8cb36328 (24 bytes) (field value:)
> --> java.util.Vector@0x8cb37ef0 (24 bytes) (field elementData:)
> --> [Ljava.lang.Object;@0x8cb3a0f0 (48 bytes) (Element 0 of [Ljava.lang.Object;@0x8cb3a0f0:)
> --> sun.awt.X11.XEmbedClientHelper@0x8cb395f8 (22 bytes) (field embedded:)
> --> sun.awt.X11.XEmbeddedFramePeer@0x8cb373a8 (305 bytes) (field target:)
> --> sun.plugin.viewer.frame.XNetscapeEmbeddedFrame@0x8cb35718 (424 bytes) (field appContext:)
> --> sun.awt.AppContext@0x8cb363b0 (49 bytes) (field contextClassLoader:)
> --> sun.plugin.security.PluginClassLoader@0x8cb34ad0 (124 bytes) (field classes:)
>
> To reproduce the problem you can try reloading one of the JavaFX samples with the latest build.
> E.g. ProjectManager one. (use link for samples)
>
> Origin : RE
> Product : javafx 1.3
> TYPE : Weekly promotion
> Version : fcs build b32
> Date : Fri Apr 2 00:28:20 2010
> Binaries : /java/re/javafx/1.3/promoted/fcs/b32/binaries
> Bundles : /java/re/javafx/1.3/promoted/fcs/b32/bundles
> *Bundles URL :http://jre.sfbay.sun.com/java/re/javafx/1.3/promoted/fcs/b32/bundles
> Workspace : /java/re/javafx/1.3/promoted/fcs/b32/ws
> dtfx.js :http://jfx.sfbay.sun.com:5001/1.3.0_b32/dtfx.js
> javafx-rt.jnlp :http://jfx.sfbay.sun.com:5001/1.3.0_b32/javafx-rt.jnlp
> jcov instrumented :http://jre.sfbay.sun.com/java/re/javafx/1.3/promoted/fcs/b32/bundles/*/*-instr.zip
> compatibility build:http://jfx.sfbay.sun.com/hudson/job/soma-compatibility/
> samples build :http://fxsqe.sfbay.sun.com/jfxsamples/1.3.0/b32/
>
> You should probably see this with any regular applets too.