Messages in this thread | | | Date | Wed, 22 Sep 1999 14:24:49 +0200 | From | Jamie Lokier <> | Subject | Re: [Q]: Linux and real device drivers |
| |
Steve Underwood wrote: > Sounds like you could make a real improvement to efficiency and cache hits > here. Just turn off the interrupts, and let the scheduler directly poll the > hardware instead of some pointless semaphore. > > Come on. The interrupts are there for a purpose. You just made them a > valueless overhead.
For high-speed packet networking, under heavy load, it's possible that timer-scheduled polling gives less overhead than packet driven interrupts.
A card that can be told "don't interrupt me for N us after receiving the next packet, unless you hit the high water mark" would be even better.
-- Jamie
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
| |