编辑: /opt/maco/tomcat8/catalina.sh 修改 JAVA_OPTS 如下:
JAVA_OPTS="-Xms5g -Xmx5g -Xmn2g -server -XX:+UseG1GC -XX:-UseCompressedOops -XX:+HeapDumpOnOutOfMemoryError -XX:MaxDirectMemorySize=500M -Djava.security.egd=file:/dev/./urandom" |
注意: -Xms 与 -Xmx 设置为物理内存的40%, -Xmn设置为-Xmx的40%
sysctl vm.max_map_count |
sysctl -w vm.max_map_count=131072 |