http://blog.csdn.net/lengyuhong/article/details/5953544
http://www.cnblogs.com/nexiyi/p/java_memory_model_and_thread.html
性能监测工具：http://blog.csdn.net/wisgood/article/details/25343845
jvm结构、gc运行机制：http://blog.csdn.net/tonytfjing/article/details/44278233