Memory blocked out when using embedded Jetty as application server

Question

I am using embedded jetty as a Java application server, with maximum JVM memory set to 800MB. I created a method to deploy and un-deploy web archives. Every time I deploy a war with a basic hello world application the embedded application server uses approximately 200MB additional memory which causes an out of memory after I add the 4th web app. Is this the expected behaviour for embedded Jetty when used as an application server?

@ManagedOperation
public boolean deployWebApp(String context, String pathToWar){
    boolean success = false;
    WebAppContext webctx = null;
    try{
        webctx = addWebApp(context, pathToWar);
        webctx.getTempDirectory();
        webctx.start();
        success = webctx.isRunning();
    } catch (Exception e) {
        e.printStackTrace();
        logger.log(Level.SEVERE, "Failed to startup webapp with webappcontext: ", webapps.get(context).getContextPath());           
    }
    return success;     
}

Answer 1

No, I use embedded Jetty and it doesn't use anything like that amount of memory.

The best thing to do is create a heap dump and then use a tool like the Eclipse Memory Analyzer to analyse the heap and see what it is about the web apps that are consuming so much memory.