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## Sounds like you want hard real-time performance

  Forum: Device Drivers
  Re: How fast are IRQ's serviced (Tim Krieglstein)
  Keywords: IRQ Interrupt-Handler Interrupt
  Date: Fri, 19 Sep 1997 08:53:18 GMT
  From: Michael K. Johnson <johnsonm@redhat.com>

Linux's fast interrupts will probably do what you want, as long as other device drivers on your machine don't disable interrupts for long periods. On the other hand, you sound like you want more than ``will probably work''. I suggest taking a look at Real Time Linux, which provides a layer that virtualizes interrupts, so that drivers that try to disable interrupts don't get in the way of real-time interrupt-driven tasks.