Messages in this thread | | | Date | Thu, 16 Apr 1998 16:49:08 +1000 | From | Richard Gooch <> | Subject | NE2000 slow interrupts safe? |
| |
Hi, all. Looking at the code for the NE2000 driver, I note that the interrupt is registered as a fast interrupt. I'm trying to convince people here to change from pSOS to Linux. A problem they have is that the NE2000 interrupt service routine takes up to 2 milliseconds. This blocks another interrupt from a custom card for too long (it interrupts every millisecond), causing them to loose interrupts.
I've instrumented the Linux NE2000 interrupt handler, and I see that almost all the time is taken in transferring the data from the card memory to RAM (the card is on an ISA bus). I did the measurements on a Pentium 90 MHz.
So my question is whether it is safe to re-enable other interrupts in the Linux NE2000 interrupt handler?
Regards,
Richard....
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu
| |