JVM，内存相关
从 Java 代码到 Java 堆
http://www.ibm.com/developerworks/cn/java/j-codetoheap/


内存详解
http://www.ibm.com/developerworks/cn/java/j-nativememory-linux/


从转储—ump）文件中调试并除错
http://www.ibm.com/developerworks/cn/java/j-memoryanalyzer/