100% CPU in IcedTea plugin

[Stefan Reich]

Hi!

I am seeing 100% CPU usage by the Java process when I use the IcedTea
plugin + OpenJDK 7 in Firefox 22 on Peppermint Linux.

It's not every time. Mostly after I load a few applets, it begins. Applets
don't work and CPU usage of Java process = 100%.

I also saw this with Java 6 I think. Definitely it's Java 7 now:

~ $ dpkg -l|grep iced
ii  icedtea-7-jre-jamvm
7u25-2.3.10-1ubuntu0.12.04.2              Alternative JVM for OpenJDK,
using JamVM
ii  icedtea-7-plugin
1.2.3-0ubuntu0.12.04.3                    web browser plugin based on
OpenJDK and IcedTea to execute Java applets
ii  icedtea-netx
1.2.3-0ubuntu0.12.04.3                    NetX - implementation of the Java
Network Launching Protocol (JNLP)
ii  icedtea-netx-common
1.2.3-0ubuntu0.12.04.3                    NetX - implementation of the Java
Network Launching Protocol (JNLP)

What to do...? Any way to find out what the Java process is doing?

I'll try kill -3 to get a stack dump next time the bug is seen. Hope it
goes somewhere I can see it.

Note: Sometimes the CPU load seems to go away again by itself, remember
seeing that once.

Weird, eh?

Here's an example applet btw:
http://tinybrain.de:8080/tb/gui-applet.php?id=105

Any ideas?

Greetings,
Stefan
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.openjdk.java.net/pipermail/distro-pkg-dev/attachments/20140109/1c66bc62/attachment.html