I'm looking into our app performance these days. In running a small jmeter script, my
app starts throwing OutOfMemory errors. The script logs into my app, places an order
and log out. The script is set to do this 50 times. It gets through about 5 and then
i see the below stack trace for each subsequent request. Thus, I'm looking for memory
leaks. Our app currently holds a lot of data in the user's session (RunData). I've
included our current log out code. Does the removeUserFromSession() method clean up
the httpSession object that's out there for the user? it would be nice to take a look
at object's in memory after this script runs for a while, but i haven't yet gotten the
hyades plugin to give anything other than weblogic specific statistics. suggestions?
ideas?
thanks!
~mark
logout code:
if (data.getSession().getAttribute(AccessControlList.SESSION_KEY)!=null)
{
data.getSession().removeAttribute(AccessControlList.SESSION_KEY);
}
if(data.getUser() != null)
{
data.getUser().setHasLoggedIn(new Boolean(false));
data.removeUserFromSession();
data.save();
}
errors:
2004-02-18 09:21:35,843 [ExecuteThread: '14' for queue: 'weblogic.kernel.Default']
ERROR system - Turbine.handleException: null
2004-02-18 09:21:35,843 [ExecuteThread: '14' for queue: 'weblogic.kernel.Default']
ERROR system -
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.apache.turbine.util.velocity.VelocityActionEvent.executeEvents(Unknown
Source)
at org.apache.turbine.util.velocity.VelocityActionEvent.perform(Unknown Source)
at org.apache.turbine.modules.actions.VelocityAction.perform(Unknown Source)
at org.apache.turbine.modules.actions.VelocitySecureAction.perform(Unknown
Source)
at org.apache.turbine.modules.ActionLoader.exec(Unknown Source)
at org.apache.turbine.modules.pages.DefaultPage.doBuild(Unknown Source)
at org.apache.turbine.modules.Page.build(Unknown Source)
at org.apache.turbine.modules.PageLoader.exec(Unknown Source)
at org.apache.turbine.Turbine.doGet(Unknown Source)
at org.apache.turbine.Turbine.doPost(Unknown Source)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1053)
at
weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:387)
at
weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:305)
at
weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6310)
at
weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:317)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:118)
at
weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3622)
at
weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2569)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170)
Caused by: java.lang.OutOfMemoryError
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