I have a similar problem.
My instance of Glassfish v2.1 (9.1.1) (build b60e-fcs) stops responding to
requests after stress test performed.
All SSL threads are in RUNNABLE state at:
java.net.SocketInputStream.socketRead0(Native Method)
CPU usage is about 0.1%
Stress test configuration:
2000 threads,
request timeout 10 ms (it is time that client waits for server response,
connection to server is reset if timeout occurs).