Also after all this messages in stdout.log i see follow:

[Unloading class sun.reflect.GeneratedSerializationConstructorAccessor3]
[Unloading class sun.reflect.GeneratedSerializationConstructorAccessor2]
[Unloading class sun.reflect.GeneratedSerializationConstructorAccessor1]
[Unloading class sun.reflect.GeneratedConstructorAccessor3]


As write here: http://anshuiitk.blogspot.com/2010/11/excessive-full-garbage-collection.html. This is may Perm size problems, but line Perm : 20073K->19913K(33420K), doesn't say about this?