We seem to have the same issue with our Glassfish.
Our server runs out of memory twice a week (on average). We tracked this down to an increasing number of ConcurrentLinkedQueue node in the selector threads. (see image selectorthread.png)
Everything seems to be working fine in our webapplication until the memory is full.
Here some more background:
Sun GlassFish Enterprise Server v2.1.1 ((v2.1 Patch06)(9.1_02 Patch12)) (build b31g-fcs)
Ubuntu 8.10
Sun Java 1.6.0_16-b01
I hope somebody has an idea what is going on here.
Kim
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