JSF, Tomcat memory usage

[Pfau, Oliver]

Hi,

I have made some test with my JSF portlet regarding memory consumption
with liferay and tomcat. The memory usage increases up to 1,1 Gbyte.
After closing the session and waiting, the memory usage does not
decrease.
In detail I store a big PDF as byte[] in the session, show it and remove
it from the session but the memory usage remains on the highest value.
That's strange I think.