arthas用来动态调试很好用
安装arthas
sudo -iu sankuai
export http_proxy="http://11.39.114.32:3128"
export https_proxy="http://11.39.114.32:3128"
mkdir arthas;cd arthas;wget "https://arthas.aliyun.com/download/latest_version?mirror=aliyun" -O arthas-packaging-3.5.3-bin.zip;unzip -o arthas-packaging-3.5.3-bin.zip;cd ..
java -jar arthas/arthas-boot.jar