The Jetty application server is the service that runs Rudder web application and inventory endpoint. It uses the Java runtime environment (JRE).

The default settings fit the basic recommendations for minimal Rudder hardware requirements, but there are some configuration switches that you might need to tune to obtain better performance with Rudder, or correct e.g. timezone issues.

To look at the available optimization knobs, please take a look at /etc/default/rudder-jetty on your Rudder server.