Hello Sathish,
You are probably right!
I have used VisualVM to evaluate it.
(1)
I have evaluated s:cache. 1 hour measurement with treeCache
Heap Size 108MB -> 190MB after GC
PermGen 108MB -> 111MB after GC
(2)
I took off s:cache, I got not concurent exceptions :) . 30 minut evaluation
Heap Size 113MB -> 130MB after GC
PermGen 105MB -> 107MB after GC
Seems like a leak. I have JBoss 4.2.3 so I upgraded jboss cache and jgroups (1.4.1.SP14)
Here is what I get now
(3)
I have evaluated s:cache. 30 minut evaluation
Heap Size 115MB -> 127MB after GC
PermGen 105MB -> 111MB after GC
Seems better..
Look here for more
http://docs.jboss.org/jbosscache/2.2.0.GA/userguide_en/html_single/
http://docs.jboss.org/jbosscache/2.0.0.GA/JBossCache-UserGuide/en/html_single/index.html
http://docs.jboss.org/jbosscache/1.4.1.SP4/TreeCache/en/html/index.html