JVM笔记jdk 的相关内容

文章 2017-07-17 来自：开发者社区

【JVM】调优笔记3-----JVM参数配置 JDK1.8

一.关于JVM参数配置，有多种途径。 1.在tomcat中直接配置的　　打开tomcat的安装目录，在bin下修改catalina.bat文件添加如下： set "JAVA_OPTS=-Xmx300m -Xms300m -Xmn100m -XX:SurvivorRatio=8" 在这个位置：启动tomcat即可起作用。   2.使用Myecplise，配置JVM参数双击Tomc...

文章 2017-07-12 来自：开发者社区

【JVM】调优笔记2-----JVM在JDK1.8以后的新特性以及VisualVM的安装使用

一.JVM在新版本的改进更新以及相关知识 1.JVM在新版本的改进更新图中可以看到运行时常量池是放在方法区的　　1.1对比：　　　　JDK 1.7 及以往的 JDK 版本中，Java 类信息、常量池、静态变量都存储在 Perm（永久代）里。类的元数据和静态变量在类加载的时候分配到 Perm，当类被卸载的时候垃圾收集器从 Perm 处理掉类的元数据和静态变量。当然常量池...

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