https://docs.oracle.com/javase/8/docs/technotes/guides/vm/performance-enhancements-7.html
调优白皮书：
设计大量Java调优内容：
https://www.oracle.com/technetwork/cn/java/javase/documentation/whitepapers-jsp-139357-zhs.html
原文：https://www.cnblogs.com/leodaxin/p/11039531.html