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I made a JVM heap dump of my tomcat server with jmap, and I’d like to figure out what is the size of all the sessions in memory.
As such I would like to know what type of object I should be looking for to estimate the sessions size.
Thank you
It’s a
javax.servlet.http.HttpSessionand the javadoc for it is here. Note that it’s an interface, but there’s a tomcat interface that extends itorg.apache.catalina.Session. I would look for all the classes that implement the Catalina Session interface;org.apache.catalina.cluster.session.DeltaSession,org.apache.catalina.cluster.session.ReplicatedSession, andorg.apache.catalina.session.StandardSession.I’m sure there are a few confounding variables which might make session tracking not 100% correlate to memory usage, but at least it’s a start.