Major Description
sometimes figuring out whether or not the request is meant for the wicket or not can be expensive, eg accessing a jcr repo and checking if some node exists. configuring a list of paths that the filter should skip right away will improve performance.
eg
<filter>
<init-param>
<param-name>ignorePaths</param-name>
<param-value>/images/products,/documents/pdfs</param-value>
</init-param>
</filter>