http://www.oracle.com/technetwork/java/gc-tuning-5-138395.html
http://www.oracle.com/technetwork/java/javase/gc-tuning-6-140523.html
http://docs.oracle.com/javase/8/docs/technotes/guides/vm/gctuning/index.html
原文：http://www.cnblogs.com/zno2/p/4599846.html