tomcat GC配置

Windows tomcat/bin/setenv.bat

set "JAVA_OPTS=-Xms1M -Xmx16M -XX:+UseZGC -XX:+ZGenerational -Xlog:gc -XX:+PrintGCDetails -Xloggc:D:\tomcat\apache-tomcat-10.1.17\logs\ztest-gc.log"

Linux tomcat/bin/setenv.sh

JAVA_OPTS=" -Xms32M -Xmx128M -XX:+UseZGC -XX:+ZGenerational -Xlog:gc*:/usr/local/tomcat/tomcat10/logs/zgc.(date +%Y-%m-%d).$.log"

rem -XX:+ZGenerational 开启分代

rem -XX:SoftMaxHeapSize 最大堆的软限制，ZGC尽量控制不超过该值，

rem -XX:UseLargePages 开启大页，提高性能 Linux 方式： https://docs.oracle.com/en/java/javase/21/gctuning/z-garbage-collector.html#GUID-D003B0F4-F89F-4CE3-9132-8E45E9D70D73