java dump MAT工具

 dump日志 jmap 

jstats -gc  jvm内存信息 jstat -gcutil -h10 1 1000 1000

分析dump日志 jhat 

MAT 

http://mahl1990.iteye.com/blog/2410197

https://blog.csdn.net/aaa2832/article/details/19419679

linux kill java

http://blog.51cto.com/leejia/1952482

http://www.10tiao.com/html/460/201612/2650518452/1.html