JConsole 6.0 b87 had crashed after 2 days of running. It was monitoring itself. JConsole may need a functionality to pack or store the old collected data to disk to avoid consuming too much memory.

Console output follows. hs_err_pid.log file is attached.

Exception in thread "AWT-EventQueue-0" java.lang.OutOfMemoryError: Java heap spa
ce
Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException:
 65536
        at sun.tools.jconsole.Plotter$Sequence.add(Plotter.java:772)
        at sun.tools.jconsole.Plotter$Sequence.access$000(Plotter.java:749)
        at sun.tools.jconsole.Plotter.addValue(Plotter.java:164)
        at sun.tools.jconsole.ThreadTab$1.done(ThreadTab.java:227)
        at javax.swing.SwingWorker$5.run(SwingWorker.java:702)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:598)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThre
ad.java:273)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.
java:183)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThre
ad.java:173)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)
Exception in thread "AWT-EventQueue-0" java.lang.OutOfMemoryError: Java heap spa
ce
Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException:
 65536
        at sun.tools.jconsole.Plotter$Sequence.add(Plotter.java:772)
        at sun.tools.jconsole.Plotter$Sequence.access$000(Plotter.java:749)
        at sun.tools.jconsole.Plotter.addValue(Plotter.java:164)
        at sun.tools.jconsole.ThreadTab$1.done(ThreadTab.java:227)
        at javax.swing.SwingWorker$5.run(SwingWorker.java:702)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:598)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThre
ad.java:273)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.
java:183)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThre
ad.java:173)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)
#
# An unexpected error has been detected by Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x0822f034, pid=3329, tid=2913307568
#
# Java VM: Java HotSpot(TM) Client VM (1.6.0-rc-b87 mixed mode)
# Problematic frame:
# C 0x0822f034
#
# An error report file with more information is saved as hs_err_pid3329.log
#
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
#
Aborted
Please also note ArrayIndexOutOfBoundsException: most charts stop redrawing at this moment.