On Fri, Mar 05, 2004 at 06:30:58PM +0000, Steve Harris wrote:
This really
mattered? I'm honestly DEEPLY surprised, and a bit sceptical.
IRQ priority will only matter AT ALL if you are in a constant state of
interrupt, or your IRQ handlers are painfully slow, neither of which should
be true.
Heres /proc/interrupts after ~3 hours of uptime.
CPU0
0: 12578480 XT-PIC timer
1: 22347 XT-PIC keyboard
2: 0 XT-PIC cascade
5: 0 XT-PIC Maestro3
8: 1 XT-PIC rtc
10: 58915 XT-PIC usb-uhci, ohci1394, eth0, Texas
Instruments PCI4451 PC card Cardbus Controller, Texas Instruments PCI4451
PC card Cardbus Controller (#2)
11: 774663 XT-PIC nvidia
12: 28909 XT-PIC PS/2 Mouse
14: 16635 XT-PIC ide0
NMI: 0
ERR: 0
Everything beats the soundcard, including the video drivers.
It shows that your soundcard had ZERO interrupts. I have trouble believing
that over the course of THREE HOURS it tried and tried and could not get a
single interrupt through. Is that what you're saying?
This does not show a particularly high interrupt load, either. It does show
that you get about 70 video interrupts per second (ask nvidia!) and it shows
that you seem to have the timer at 1024 HZ (lowlatency patch?).