GWT load testing with jmeter

In fact the real complexity exists if your application uses GWT RPC, if it's JSON then JMeter will do the job. I your login page is not the first page AND you application uses GWT RPC, then you will need either a plugin to JMeter that handles the serialization or use another tool (I don't know real free tools that do this).

It depends on maintenance. We do have a GXT app and even the JMeter HTTP Proxy recorder works fine on it.

But its maintenance gets compromised since RPC Requests use a parameter ("X-GWT-Permutation") which is the id of the .nocache.html file. Since it is generated with a different id for each build, you are likely to re-record it.

On the other hand, selenium runs fine. Get a hold on properly using selectors in selenese, and perhaps ensureDebugIds (in GWT), and youre likely to be set. It is fairly trivial to write a .jar enclosing a JUnit (3.8) test suite and wrap it around selenium.

As a recomendation: If you're likely to do multiple load testing with selenium, I can recommend Saucelabs' Sauce on Demand (saucelabs.com). You set up an SSH Proxy with their service, and their EC2 selenium instances connect to your intranet app. Thats the approach we went for.

The tool you need is called NeoLoad (www.neotys.com/). But is not free :( if you want to try just once you can use the trial license the give you at start.

If you don't need something sofisticated you can use Apache HTTPD-Test wich is Free but is not than configurable as Jmeter.

Hope This Helps. Cheers.