Oak Interrupts Broker tracks the usage of interrupts by raid members and provides this information as an LDB datafeed. Note that Oak Interrupts Broker does not display information to the user without an appropriate LDB display, so you will need the companion addon Oak Interrupts Display or some other compatible LDB display.
Developers
I've not yet written up a description of the specification for the LDB dataobject Oak Interrupts Broker provides, if you are interested in developing a display and have questions PM me. If you want to do something that would be restricted by the license, PM me as well - I just haven't had enough time (read: don't know enough) about licensing to have thought through the implications of something more open.