anonymous wrote : | I very much doubt that. The reason why rendering large tables is slow in JSF is the building of the component tree. No it is EL. I can see it in profiler. JSF doesn't have ability to define a variable so you have to recalculate EL expressions over and over (and that is using reflection!). JSF doesn't have if/else concept it only has 'rendered' so where you would normally had 'switch' statement evaluated once JSF has to evaluate 'rendered' again and again (with reflection!). I wonder if any thought on performance implications was given during JSF design... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4084773#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...