JVM--调优--03--开发配置

JVM–调优–03–开发配置

1、本地配置

-Xmx1g 
-Xms1g 
-Xmn900m 
-XX:+UseG1GC 
-Xloggc:gc.log 
-XX:+PrintGCDetails

2、linux tomcat 配置

1. 进入tomcat的bin目录

2. 修改catalina.sh文件
   

    if [ -z "$JSSE_OPTS" ] ; then
      JSSE_OPTS="-Djdk.tls.ephemeralDHKeySize=2048"
    fi
    JAVA_OPTS="$JAVA_OPTS $JSSE_OPTS"
    JVM_OPTS="
    -Xmx2g 
    -Xms2g 
    -Xmn700m 
    -XX:+UseG1GC
    -Xloggc:/home/hd/tomcat-app-node01/logs/gc.log 
    -XX:+PrintGCDetails
    "
    MYPERF4J_OPTS="
    -javaagent:/home/hd/myPerf4J/MyPerf4J-ASM.jar
    -DMyPerf4JPropFile=/home/hd/myPerf4J/myPerf4J.properties"
   
    JAVA_OPTS="$JAVA_OPTS $JVM_OPTS $MYPERF4J_OPTS"
     
   
    # Register custom URL handlers
    # Do this here so custom URL handles (specifically 'war:...') can be used in the security policy
    JAVA_OPTS="$JAVA_OPTS -Djava.protocol.handler.pkgs=org.apache.catalina.webresources"