Report pages - reduce render time

Is there a way to minimize the number of pages obtained from a report. My report has more than 9000 pages. I want to minimize the number of pages as it would fasten the rendering of the report in excel,pdf formats. how would one do this? is there any expression?. your help is very much appreciated. I am tearing my hair to minimize the time taken to render a report.! help pls!

Thanks,

You say the report is 9000 pages, so what did you have in mind when you say "minimize the number of pages" -- it seems like you already know how big the report is.

If you only need to see some of the 9000 pages at a time, or only certain people need to see certain pages, you should filter the data (preferably at the data source) with parameters and/or UserId.