interrupt storm on MSI IXP600 based motherboards

[Dan Langille]

On Jan 22, 2009, at 11:38 AM, Dan Langille wrote:

> Victor Balada Diaz wrote:
>> On Wed, Jan 21, 2009 at 07:22:06PM +0300, Marat N.Afanasyev wrote:
>>>>> trouble with onboard re(4) was resolved in -CURRENT and -STABLE,  
>>>>> but storms are not bound to ethernet only. storm may appear on  
>>>>> any device. if any device generates enough interrupts rate,  
>>>>> storm will arrive.
>>>> Yes, I just got another storm, on my ATA controller this time. Ah
>>>> well, so much for the idea of disabling unneeded devices!
>>>>
>>>> -pete.
>>>>
>>> it's a kind of magic, really. I built a new kernel with KDB and  
>>> DDB and after 1 day, 13:15 I'm still waiting for storm to arrive.  
>>> And I added
>>> hw.acpi.osname="Linux" to /boot/loader.conf.
>> Try doing lots of IO and you will get the problem soon. You might
>> want to try:
>> while true; do dd if=/dev/zero of=BAH bs=1M count=1024; sync; done
>
> FWIW, last night I changed the address of the comm port IO in my  
> BIOS. Then I ran the Bacula regression test suite (lots of IO).  For  
> my machine, once the interrupt storm starts, it continues.  I do not  
> know if that happens to everyone.
>
> Since changing the address, I have had no interrupt storms. I have  
> been running the above IO loop for about ten minutes.
>
> No storm yet (knock on wood).


And it's back:

Jan 22 17:21:46 polo kernel: interrupt storm detected on "irq22:";  
throttling interrupt source
Jan 22 17:23:19 polo kernel: interrupt storm detected on "irq22:";  
throttling interrupt source
Jan 22 17:28:20 polo kernel: interrupt storm detected on "irq22:";  
throttling interrupt source
Jan 22 17:33:20 polo kernel: interrupt storm detected on "irq22:";  
throttling interrupt source
Jan 22 17:38:20 polo kernel: interrupt storm detected on "irq22:";  
throttling interrupt source

I shall try the hw.acpi.osname="Linux" option now.

 From dmsg: Jan 22 18:10:07 polo kernel: ACPI: Overriding _OS  
definition with "Linux"

-- 
Dan Langille
http://langille.org/