JasperReport Server performance in relation to number of client users?

[bagaric.test]

Hi,

lately I've installed JasperServer on a linux machine, and created around 25 reports(quite simple) via iReport and published them on that JR Server. Next step is to setup my Oracle APEX application to work with same JR Server. Now, what I want to ask is how JR Server handle number of sessions or workload regarding the number of clients? Something like, if number of users is 100, than I should increase RAM memory or else? If anyone have some best practices to share regarding this question or experience with JR Server when it's on full workload(whether is crashing, slowing down....)  that would be most appreciated. 

Best regards