如何在Windows上增加Tomcat堆内存 [英] How to increase Tomcat Heap memory on windows

问题描述

我在互联网上和这里的stackoverflow上都读了很多文章，但是我仍然无法增加 Tomcat Heap Siz e. 可能我犯了一个我无法识别的错误.

I read many posts on the internet and here on stackoverflow, but I'm still not able to increase Tomcat Heap Size. Probably I made an error that I can't recognize.

遵循此指南我做了这些步骤:

Following this guide I did these steps:

1. 我在文件夹 {tomcat} \ bin
中创建了文件 setenv.bat
2. 在文件 setenv.bat 中，我添加了字符串 set"JAVA_OPTS =％JAVA_OPTS％-Xms128m -Xmx1024m -XX:MaxPermSize = 512m -server"
>

1. I created the file setenv.bat inside the folder {tomcat}\bin
2. Inside the file setenv.bat I added the string set "JAVA_OPTS=%JAVA_OPTS% -Xms128m -Xmx1024m -XX:MaxPermSize=512m -server"

当我运行Tomcat，然后启动我的应用程序(例如localhost:8080/appName)时，我尝试通过这种方式了解堆信息:

When I run Tomcat and then I launch my app (for instance localhost:8080/appName) and I try to know the heap informations this way:

long maxHeapSize = Runtime.getRuntime().maxMemory();        
long freeHeapSize = Runtime.getRuntime().freeMemory();  
long totalHeapSize = Runtime.getRuntime().totalMemory();    
System.out.println("Max Heap Size = " + (maxHeapSize/1024/1024)+ " MB");    
System.out.println("Free Heap Size = " + (freeHeapSize/1024/1024)+ " MB");  
System.out.println("Total Heap Size = " + (totalHeapSize/1024/1024)+ " MB");        

我知道最大堆大小始终为256 MB. 有人知道我的错误吗?

I get that the Max Heap Size is always 256 MB. Does anybody know what's my error?

推荐答案

请查看详细信息:

1. 我使用 apache-tomcat-9.0.14-windows-x64.zip
2. 请确保正确使用 Java版本
3. 在setlocal之后编辑catalina.bat添加设置JAVA_OPTS = -Xms128m -Xmx1024m
4. 使用 startup.bat
启动Tomcat.
5. 使用以下方法检查JVM:启动 jconsole ，选择不安全
6. 请参见 XMS，XMX

1. I use apache-tomcat-9.0.14-windows-x64.zip
2. Sure use right java version
3. Edit catalina.bat add set JAVA_OPTS=-Xms128m -Xmx1024m after setlocal
4. Start Tomcat with startup.bat
5. Check JVM with: start jconsole, select Tomcat, select insecure
6. See XMS, XMX

如果要启动Tomcat9w.exe，则需要安装服务

If you want start Tomcat9w.exe, you need install service

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