Java – htmlunit: ultra slow execution?

I've been using htmlunit It suits my requirements, but it seems to be very slow

Goto Google page
Enter some text
Click on the search button
Get the title of the results page
Click on the first result.

code:

long t1=System.currentTimeMillis();
Logger logger=Logger.getLogger("");
logger.setLevel(Level.OFF);
WebClient webClient=createWebClient();
WebRequest webReq=new WebRequest(new URL("http://google.lk"));

HtmlPage googleMainPage=webClient.getPage(webReq);
HtmlTextInput searchTextField=(HtmlTextInput) googleMainPage.getByXPath("//input[@name='q']").get(0);
HtmlButton searchButton=(HtmlButton) googleMainPage.getByXPath("//button[@name='btnK']").get(0);

searchTextField.type("Sri Lanka");
System.out.println("Text typed!");
HtmlPage googleResultsPage= searchButton.click();
System.out.println("Search button clicked!");

System.out.println("Title : " + googleResultsPage.getTitleText());

HtmlAnchor firstResultLink=(HtmlAnchor) googleResultsPage.getByXPath("//a[@class='l']").get(0);
HtmlPage firstResultPage=firstResultLink.click();
System.out.println("First result clicked!");

System.out.println("Title : " + firstResultPage.getTitleText());
//System.out.println(firstResultPage.asText());
long t2=System.currentTimeMillis();
long diff=t2-t1;
System.out.println("Time elapsed : "  + milliSecondsToHrsMinutesAndSeconds(diff));

webClient.closeAllWindows();

It works 100% well But it takes three minutes and 41 seconds

I guess the reason for the slow execution is to validate every element on the page

My question is how to reduce the execution time of htmlunit? Is there any way to disable validation on Web pages

Thank you in advance!

Solution

For the current htmlunit 2.13, the setting options are slightly different from those provided by maxmax:

final WebClient webClient = new WebClient(BrowserVersion.CHROME);
webClient.getOptions().setCssEnabled(false);//if you don't need css
webClient.getOptions().setJavaScriptEnabled(false);//if you don't need js
HtmlPage page = webClient.getPage("http://XXX.xxx.xx");
...

In my own tests, this is 8 times the default option (note that this may depend on the web page)