Disk performance test

Hello guys!

Is there a tool to benchmark our rockstor setup? Like disk reading/writing tests, general system speed according to hardware, etc.?

I feel like my RAID is not performing as good as before and I would like to be able to investigate.

More precisely it seems it has having hard times doing file I/O operations. I have an application which needs to rebuild an XML (2 megs), every time it refreshes a certain gui page and it is taking more than 30 seconds lately, while it used to take less than 5.

Thanks a lot!!