Stack information, GC statistics

How to view stack information ：
top or ps -ef |grep ... Find the process pid
top -H -p Check the resource utilization ratio of threads under the process

jstack Print under this process Stack details
jstat -gcutil Print gc The recovery of

Detailed see
Stack ：https://blog.csdn.net/weixin_33946020/article/details/85770103
gc:http://blog.csdn.net/chaofanwei/article/details/11758395