Sequence of events:

   Started 64bit Java app running 6u21GA
         1. Started wrapper script on remote host to collect jmap.
         2. Observed some issues with test set-up.
         3. Killed the wrapper script.
         4. Fixed the issue in ~10 minutes.
         5. re-started wrapper script to collect jmap.
         6. Waited for ~30 minutes and assumed jmap is hung.
         7. Tried executing jstack on server app from local host.
         8. Assumed jstack is in hung state as command prompt did not return in
            ~30 minutes.
         9. Collected kill -3 , gcore etc. on all related processes pid.