Today, the most common tool for measuring controller performance is cbench. We've made some changes to Floodlight to enhance cbench performance and want to suggest a configuration for running performance tests of this type.
Openjdk is easy to install but its worth getting a fast sun jvm to maximize performance. Check out [www.java.com]. There are no longer Ubuntu packages I believe.
Edit src/main/resources/floodlightdefault.properties to look like this. It loads a minimal, optimized configuration of Floodlight.
The Floodlight properties file is cached in the Floodlight jar. You can either rebuild Floodlight or add a "-cf floodlightdefault.properties" to the java command in floodlight.sh (in the root floodlight directory).
You should use floodlight.sh in the root directory to run Floodlight. This includes a number of java properties that optimize performance.
Depending on the number of MAC's in your test, you may need to tweak memory properties further.