How to increase DMA fifo depth?

I'm not very knowledgable with DMA's but wouldn't that mean you should drop you interupt down to something that occurs sooner (maybe when the dma is half full).

To me it sounds like the interrupt happens too late and the fifo fills up before getting emptied out (although I would have figured the emptying process would be faster then the filling but again, I have never played with DMAs before).

Hopefully someone will be of more help

G-luck