Re: [9fans] oh, no! (again)

[Fernan Bolando <fernanbolando@mailc.net>]

On Wed, Aug 12, 2009 at 8:40 PM, erik quanstrom<quanstro@quanstro.net> wrote:
>> > judging from past email, i'm guessing that your ide device
>> > is 27c4, which was missing from 9load.  i put up a corrected cd.
>> > if you can ftpfs from your mostly-installed machine and
>> > get just 9load.bz2, it's in the same directory.
>> >
>> > ; i=9atom.iso.bz2 sha1sum $i && ls -l $i
>> > cb7bdb9bcaebaf5e54d5a76c672dba52f90eb55a        9atom.iso.bz2
>> > --rw-r--r-- M 176 quanstro quanstro 88211681 Aug 11 17:13 9atom.iso.bz2
>> >
>> thanks erik!!!  I can now boot. I am now at the
>> init starting /bin/rc     stage it seems to stall there. I think its
>> just the ip/ipconfig issue should be easy to fix.
>
>> just a note.  i am getting
>> ide: caught missed irq   several times shoul i be concerned?
>
> what's going on:
> i replaced the sleep in sdata.c with a loop that checks for i/o
> completion every second.  i/o should never be outstanding for
> 1 second, so this will never fire unless your disk is very sick,
> or you're missing interrupts.  after 10 missed irqs, it has mercy
> on you and checks every 50ms.  this will seem very slow.
>

Its very very slow hehehe

> the pureists are probablly going to choke at this trick.
> i don't blame them.  but on the other hand, i want to give
> folks a chance to recover their systems if ide acts up.
>
> this is something to be concerned about.
>
> once you boot up, there are a number of things to try.
> /dev/irqalloc for your kernel should have an extra final
> entry that counts the number of interrupts on each vector.
> i would expect that number would be 0, given your symptoms.

term% cat /dev/irqalloc
3 0 debugpt [0]
7 0 mathemu [0]
8 0 doublefault [0]
9 0 mathover [0]
14 0 fault386 [0]
15 0 unexpected [0]
16 0 matherror [0]
32 0 clock [8298344]
33 1 kbd [103]
38 6 floppy [0]
39 7 lpt [29]
42 10 usbehci [0]
42 10 usbuhci [0]
43 11 sdE (ata) [16869]
43 11 usbuhci [16863]
43 11 usbuhci [16863]
43 11 ether0 [16863]
44 12 kbdaux [2400]
46 14 sdC (ata) [23]



>
> here are a few things you can look at
> - is your southbridge recognized?
>
not sure how to check this...

> - you might want to try turning dma on, on the wild
> theory that it worked well enough during installation.

updated /rc/bin/cpurc.local to include dmamode=ask
rebooting now.

> - you might want to try turning mp interrupts on.
> unfortunately, i forgot to add the nomp device which
> allow one to inspect the mp interrupts before trying
> them.
plan9.ini already shows *nomp=1
so I guess it's a default.

> failing any of those things, send me your pci output.
> this setup should work.
dont have lspci will install after trying the dmamode.

thanks for the patience.



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