Hi Warren, thanks for the help. I found that the application creates lots of SessionFactoryImpl objects even though one is enough
I changed this part of webapp. Now it has only one SessionFactoryImpl and the memory leak is gone. bye 2012/5/24 Warren Bell <warrenbe...@gmail.com> > Is this the same server with the Wicket app you posted about earlier ? > If so, you have a Wicket app that is storing the > SessionFactoryObjectFactory on a page as a class member. Wicket stores > each page a user has been to in the user's session. If the page has > class members, then it serializes them and stores them too. I have seen > this kind of thing happen many times before causing big memory usage. > > Remove the Wicket app and run the Eclipse Memory Analyzer. > > Thanks, > > Warren Bell > > On 5/24/12 5:42 AM, Konstantin Kolinko wrote: > > 2012/5/24 Christian Kaufhold <kaufhol...@googlemail.com>: > >> Hi, > >> > >> I have a leaking Tomcat App > >> I checked the heap with the Eclipse Memory Analyser > >> and it says > >> > >> The classloader/component > *"org.apache.catalina.loader.WebappClassLoader @ > >> 0x94532f50"* > >> occupies *376.421.152 (79,51%)* bytes. The memory is accumulated in one > >> instance of > >> *"java.util.HashMap$Entry[]"* loaded by *"<system class loader>"*. > >> > > > > So the memory is used for something useful? That is not a "memory > > leak". It is just a web application requiring a lot of memory. > > > > WebappClassLoader is the classloader that is used to load the classes > > of your webapp. Of course, it remembers every class that it loaded > > (to satisfy repeated class.forName() calls) and every class that it > > loads has a reference it it (via getClass().getClassLoader()). > > > > There may be many classes, but I do not think that the classloader > > itself is responsible for 300 Mb of memory. > > > >> and the data that is in the entries of the gigantic Map is > >> org.hibernate.impl.SessionFactoryObjectFactory > >> > > > > That would be a hibernate question. I have no clue what that class is > about. > > > > Best regards, > > Konstantin Kolinko > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > > For additional commands, e-mail: users-h...@tomcat.apache.org > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > >
