Re: [9fans] venti+fossil woes

[Geoff Collyer <geoff@collyer.net>]

Wow, your irqalloc output is already sorted; I have to sort mine by
hand.

It seems odd that sdC doesn't show up (at irq 14).  I only have one
CPU server with IDE disk(s), but its irqs look like this:

; sort +1nb  '#P/irqalloc'
          3           0 debugpt
          7           0 mathemu
          8           0 doublefault
          9           0 mathover
         14           0 fault386
         16           0 matherror
         32           0 clock
         33           1 kbd
         38           6 floppy
         42          10 ether1
         44          12 ether0
         46          14 sdC (ata)
         47          15 sdD (ata)

You've got sdE and sdF sharing irq 9 and usb0 and ether0 sharing irq
11 (yet irqs 10 and 12 are unused).  This could be due to a buggy BIOS
(I've got a few of those), but more likely your BIOS is running out of
irqs that it knows to be free and thus doubles up devices.  It would
be worthwhile to go into BIOS setup and disable any devices you aren't
using, to reclaim their IRQs.  Also visit your PCI/PNP assignment
screen and let PCI/PNP have all free irqs, or turn off manual
selection of free irqs.

On a CPU server, you can probably disable all LPT (parallel) ports at
irqs 5 and 7, COM2 (second serial port) at irq 3, and PS/2 mouse at
irq 12.  If you're not using USB, don't assign it an irq.  If there's
an option to assign your vga card an irq, disable it.  I'm not sure
what's sitting on irq 10; maybe vga.  Make sure your first IDE
controller is enabled (in your `integrated peripherals' screen); it
should appear at irq 14.