[linux-audio-user] Is everyone sick of interrupts yet?

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Subject: [linux-audio-user] Is everyone sick of interrupts yet?
From: brad stafford (brad_AT_archone.tamu.edu)
Date: Tue Sep 28 2004 - 08:59:42 EEST

I just tonight switched from the Planet CCRMA RH9 to FC1. The install
was purely from the CDROMs dated 4/25/2004.

I've seen all the latest posts about interrupts and did the required
reading on the internet. I really managed to get RH9 cleaned up but in
FC1 I'm seeing something a little different. I have a Delta 1010 and I'm
running an AMD Barton 2.6 with 5 PCI slots. The question is what the
heck are IRQ 16 and 22? I moved the sound and ethernet cards around to
get them to 16 and 22 as they used to be eth0 on 21 and ICE1712 on 22. I
have ACPI turned off as a service but don't have a "disable" option in
the BIOS. I did turn off USB support in the BIOS.

Is 16 like the equivalent of IRQ 3 since it's following 15?

[brad_AT_mars brad]$ cat /proc/interrupts
           CPU0
  0: 81690 IO-APIC-edge timer
  1: 75 IO-APIC-edge keyboard
  2: 0 XT-PIC cascade
  8: 1 IO-APIC-edge rtc
  9: 0 IO-APIC-level acpi
 12: 836 IO-APIC-edge PS/2 Mouse
 14: 10789 IO-APIC-edge ide0
 15: 735 IO-APIC-edge ide1
 16: 0 IO-APIC-level ICE1712
 22: 21 IO-APIC-level eth0
NMI: 0
LOC: 81633
ERR: 0
MIS: 0

I'm getting 5.8 msec latency in JACK with 128 frames/period at 44100 and
2 periods/buffer. A huge improvement over the 46.1 msec using RH9 with
capabilities.

Thanks, Brad.

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