So, I noticed that things are starting to take quite a while to execute on the BI Server...
decided to check top, and while I reloaded a dashboard, this came up:

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
31244 x 20 0 2916m 2,4g 10m S 102,1 60,9 638:53.83 java

Which made me wonder about two things:
1- (serious) could that server uptime be a performance problem?
2- (not so much) how the hell did it got 102.1% CPU?! O_o