Set Java startup options

The Apache Tomcat application server is optimized for a high number of operations, each with a low amount of data exchanged. This default configuration is not optimal for GeoServer which works with much larger GeoSpatial data.

Follow these steps to set up your Java configuration in a much more efficient way than the one provided by the default startup parameters.

Java options:

Java Option	Description
-XX:SoftRefLRUPolicyMSPerMB=36000	Configure memory use to encourage sharing of coordinate reference systems between requests.
-XX:-UsePerfData	Improve performance by disabling external performance monitoring

System properties:

Parameters	Description
-Dorg.geotools.referencing.forceXY=true	Default to interpreting coordinate reference systems in easting/northing order for greater compatibility with web clients
-Dorg.geotoools.render.lite.scale.unitCompensation=true	When rendering be sure to account for scale when selecting the correct rules to draw

Windows

Apache Tomcat Java Options:

1. Open the Tomcat configuration tool. If you are running Windows, you will find it at Start ‣ All Programs ‣ Apache Tomcat ‣ Tomcat Configuration.

2. Click Configure and select the Java tab.

3. At the bottom of the Java Options field, enter the following lines:

   -Dcatalina.home=C:\Program Files\Apache Software Foundation\Tomcat 9.0
   -Dcatalina.base=C:\Program Files\Apache Software Foundation\Tomcat 9.0
   -Djava.io.tmpdir=C:\Program Files\Apache Software Foundation\Tomcat 9.0\temp
   -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
   -Djava.util.logging.config.file=C:\Program Files\Apache Software Foundation\Tomcat 9.0\conf\logging.properties
   -XX:SoftRefLRUPolicyMSPerMB=36000
   -XX:-UsePerfData
   -Dorg.geotools.referencing.forceXY=true
   

   Note -X java options are listed before -D system properties.

4. If your application server is currently running, stop it and restart it.

Linux and macOS

Linux and macOS setenv.sh:

1. Java options are managed in setenv.sh:

   #!/bin/sh
   
   # Prepend JVM Options
   CATALINA_OPTS="-XX:SoftRefLRUPolicyMSPerMB=36000 -XX:-UsePerfData ${CATALINA_OPTS}"
   
   # Append system properties
   CATALINA_OPTS="${CATALINA_OPTS} -Dorg.geotools.referencing.forceXY=true"
   

   Notes:

   • Note -X java options are listed before -D system properties.

   • Use of CATALINA_OPTS recommended (as used by Tomcat start and run command)