Memory settings
The following sample sets
- PermGen space is set to 256 MB
- Minimum application memory is 512 MB
- Maximum application memory is 1 GB
Max total memory in this setup is 1280 MB which will work just fine in most cases
-Xmx512m -Xms1024m -XX:MaxPermSize=256m
In very memory constrained environments (server <= 1GB) use the following settings, with a max use of 512 mB
-Xmx384m -Xms384m -XX:PermSize=128m -XX:MaxPermSize=128m
Tomcat6
Windows
The service can be changed by
- Open prompt as Administrator
- Run the following commands
cd "C:\Program Files\Apache Software Foundation\Tomcat 6.0\bin
Tomcat6w.exe //ES//tomcat6- Klik "Java" page
- Set the values
- Initial memory pool (aka "Xms"): 512m
- Maximum memory pool (aka "Xmx"): 1024m
- Add an extra line to Java Options
-XX:MaxPermSize=256m- Klik OK
Linux
Find catalina.sh in something like: /usr/share/tomcat6/bin
Assign following line to JAVA_OPTS variable and add it into catalina.sh file.
JAVA_OPTS="-Djava.awt.headless=true -server -Xmx512m -Xms1024m -XX:MaxPermSize=256m"Tomcat7
Windows
As Tomcat 6 except for step 2
cd "C:\Program Files\Apache Software Foundation\Tomcat 7.0\bin
Tomcat7w.exe //ES//tomcat7See the visual guide here
http://plavc.wordpress.com/2012/02/08/tomcat-service-on-windows/
Linux
sudo nano /etc/tomcat7/tomcat7.confTomcat8
Windows
As Tomcat 7 except for step 2
cd "C:\Program Files\Apache Software Foundation\Tomcat 8.5\bin
Tomcat8w.exe //ES//tomcat8JBoss 7.x
Windows
- Edit [JBoss home]\bin\standalone.conf.bat
- Ensure the following value is present
set "JAVA_OPTS= -Xmx512m -Xms1024m -XX:MaxPermSize=256m"