Why exactly are you listing 6000 items on one page?
Why would you not
1) Fix the query
2) Limit the results displayed on one page
3) Cache the query results
Which are all simpler and easier ways to solve this problem?
Heck its even easier to use template::adp::include to "save" the page, write it to the filesystem as a static adp then include that into the page than what you are trying to do. Static pages are quite speedy.
