Hi,
What do you make of my IRQs, they're not consistent
with what you're describing. Is this some newer bios
aipc feature?
The pci cards begin at 16 with two scsi controlers
sharing interupt 16, at 18 we see a third scsi
controler that isn't the same as the one on 16. It's
just the same driver.
There's an NVIDIA graphics card in an AGP slot, soon
to be replaced with a radeon. Is the NVIDIA the "LOC"
entry?
The scsi HDD controlers, interupt 16, are a lower
interupt than the rme9652 so I'm assuming they recieve
priority over the audio card. I'm guessing two HDD
controlers requesting CPU time slices aren't the most
optimal scenario.
I am comfortable running jackd with larger buffers
because I use an external digital consol and monitor
inputs for studio and control rooms from the consols
inputs. So latency isn't as big an issue for me as it
might be for engineers that don't have external
consols. Reguardless, I'd like to tune this box to its
optimal performance capability.
If the AGP interupt can't be reordered, then I assume
the correct strategy is to use "setpci" or the bios to
adjust latency. Make sense? I'd probably opt for using
"setpci" because it enables resetting latency on the
fly--I intend to do some video work.
I'd be curious to know other people's opinions of my
irq ordering.
bash-2.05b# cat /proc/interrupts
CPU0 CPU1
0: 3729010 3949857 IO-APIC-edge timer
1: 8714 9043 IO-APIC-edge keyboard
2: 0 0 XT-PIC cascade
12: 206994 212633 IO-APIC-edge PS/2 Mouse
16: 212646 216114 IO-APIC-level sym53c8xx,
gdth
17: 1234920 1245793 IO-APIC-level rme9652
18: 3721 4640 IO-APIC-level sym53c8xx
19: 364290 368882 IO-APIC-level ICE1712,
eth0
NMI: 0 0
LOC: 7678904 7678970
ERR: 0
MIS: 0
ron
--- Mark Knecht <markknecht@xxxxxxxxx> wrote:
> On Sun, 2003-03-23 at 01:59, Jaakko Prättälä wrote:
>
> > What could I do if I can't set irq's in my bios?
> >
> Jaakko,
> Hi. First, what machine are you running and what
> BIOS does the
> machine have? Phoenix? Award? Usually you can set
> IRQ's, but often the
> settings are hard to find. In my machine it's under
> Advanced->PCI
> Configuration. Even though I have this feature, I
> still recommend that
> you should:
>
> 1) Remove all of your cards EXCEPT graphics, boot
> and look at interrupt
> settings. Write them down or save a file somewhere.
>
> 2) If you have on-board devices, like sound or LAN,
> then you should
> attempt (through BIOS if available) to put them on
> low-priority
> interrupts. (3,4,5,6,7)
>
> 3) Add a card, such as your HDSP that drives the
> multi-face, on maybe
> PCI slot 3, boot the machine, and look at what
> interrupt each device is
> on. If you get 9 or 10 for the HDSP, then you're in
> pretty good shape.
> If you do not, then again, set the PCI slot to IRQ 9
> if available, or
> try a different slot with just the HDSP and no other
> cards. (Always
> graphics installed, obviously!)
>
> 4) Go through this process, adding a single card,
> booting, and looking
> at which IRQ each card has, until you get your
> important sound card/s on
> the best IRQs. Again, IRQ order is:
>
> 0,1,8,9,10,11,12,13,14,15,3,4,5,6,7
>
> 2 does not exist. (Or it's called 'cascade'.)
>
> 0,1 & 8 are not available.
>
> 9 is best, followed by 10, etc.
>
> 10 is as good as 9 if 9 is not used, or only used by
> acpi support.
>
> Networking works fine on 3-7.
>
> I hope this helps. Feel free to write directly if
> you have other
> questions.
>
> Cheers,
> Mark
>
> 3) NOTE: On my machine, BIOS seems to move the USB
> interrupts around as
> I chan
>
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