I am running JBoss 4.0.2 with JVM 220.127.116.11, with maximum heap and PermGen memory size set to be 1GB and 256MB, respectively.
I deployed JBoss with our application on Fedora 5 (FC5) with 2GB of memory and the memory footprint is as follows:
Virtual Memory: 1712m
I then deployed the exact same code and configuration on a similarly configured Windows XP machine, with 2GB of memory as well and Windows version of JVM 18.104.22.168 and memory footprint is as follows:
Virtual Memory: 322m
I obtained these numbers right after JBoss start-up while the system is idling doing nothing.
Can someone shed some lights on why such a great memory utilization discrepancy on the two platforms? And what do I need to do to tune JBoss/JVM and/or Fedora to bring the memory utilization to a more management level? I tried to Google for some answers but didn't find anything related.