Java performance tuning and jvm related knowledge

1.

Java memory debugging tool

http://itzoo.info/?p=256

2.Java memory debugging case

http://www.cnblogs.com/zhengyun_ustc/archive/2013/03/18/tda.html

3.Java memory composition

http://www.cnblogs.com/jackyrong/archive/2010/01/21/1653163.html