Hi all,
We have developed a web application using Tuscany 1.4 which is deployed in
Tomcat. We have a need to restart the webapp on demand without stopping tomcat.
Tomcat goes out of perm gen space and crashes after a few restarts. Looking
through the memory dumps shows the roots to tuscany core MessageImpl class.
To narrow down the issue, I used the calculator-ws-webapp sample that came with
Tuscany. After deploying the war in tomcat, I used tomcat manager to restart
the webapp a few times. I can see that the "Perm Gen memory" keeps increasing
in Jconsole. This happens even with Java options set to -XX:+UseConcMarkSweepGC
-XX:+CMSPermGenSweepingEnabled -XX:+CMSClassUnloadingEnabled.
However if all entries from the composite file are commented out, the perm gen
memory is reclaimed when the webapp is stopped. Makes me think that when
composite entries are present, Tuscany is holding on to the classes somehow
preventing it from getting unloaded or garbage collected during webapp restart.
Is that possible? Does Tuscany create its own classloader? Is there a call to
release the classes loaded by Tuscany when the webapp is stopped?
hope someone can provide us pointers to fix this. This is currently blocking us
from our release :-(
Thanks,
N.V
