TOMCAT运行时,实时监控当前应用JVM的使用情况;可以利用Tomcat自带的应用manager查看详情。
首先,确认服务目录webapps下有manager应用
其次,需要创建角色manager和对应的用户,修改/conf/tomcat-users.xml
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<? xml version = '1.0' encoding = 'utf-8' ?>
< tomcat-users >
< role rolename = "tomcat" />
< role rolename = "role1" />
< role rolename = "manager-gui" />
< user username = "admin" password = "admin" roles = "manager-gui" />
< user username = "tomcat" password = "tomcat" roles = "tomcat" />
< user username = "both" password = "tomcat" roles = "tomcat,role1" />
< user username = "role1" password = "tomcat" roles = "role1" />
</ tomcat-users >
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然后,浏览器输入网址:http://IP:port/manager/status 帐号/密码:admin/admin登录
点击Server Status查看JVM内存使用情况
Free memory:当前可用的内存;
Total memory:当前已经分配的JVM内存;
Max memory:当前允许分配的最大JVM内存
完毕!
修改tomcat 最大内存,已分配内存,已分配内存中的剩余空间
C:\Tomcat\apache-tomcat-8.0.47\bin\catalina.bat
添加:set JAVA_OPTS=-Xms512m -Xmx768m
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原文链接:https://www.cnblogs.com/Fooo/p/15962775.html