Continuously 'Rendering template' on freemarker+struts2

Question

I'm using struts2 with freemarker (included in struts2 lib) and i'm trying to speed up my web-app.

In the logs continuously appear:

UIBean.debug(57) | Rendering template /template/xhtml/a
FreemarkerTemplateEngine.debug(57) | Rendering template /template/simple/a.ftl

and this for each tag. The problem is that i don't know if it's normal, i just set properties for caching templates:

struts.properties:

struts.freemarker.templatesCache=true

and freemarker.properties:

template_update_delay=60000