JVM 堆内存，参数优化

Java堆内存

http://www.importnew.com/19593.html

JVM诊断之查看运行参数

JVM 垃圾回收器工作原理及使用实例介绍

https://www.ibm.com/developerworks/cn/java/j-lo-JVMGarbageCollection/

Java 理论与实践: 垃圾收集简史

https://www.ibm.com/developerworks/cn/java/j-jtp10283/index.html