interrupt storm on MSI IXP600 based motherboards

[Dan Langille]

Marat N.Afanasyev wrote:
> Dan Langille wrote:
>> Pete French wrote:
>>>>>>> kernel: interrupt storm detected on "irq22:"; throttling 
>>>>>>> interrupt source
>>>
>>> ....
>>>
>>>> Opening the case, reading the m/b:
>>>>
>>>>   K9A2 Platinum MSI
>>>
>>>
>>> I hadnt been paying much attention to this thread, but just to let you
>>> know that I also saw the same thing on this machine which has an MSI 
>>> 790FX
>>> Platinum motherboard. It was also irq22, and I am also running amd64.
>>>
>>> In my case I simply disabled the onboard ethernet (which I wasnt using)
>>> and the problem went away - but then I only saw the problem once, it 
>>> wasnt
>>> a regular occurrance. If you have an alternative ether card you can drop
>>> in thn you could try that...
>>
>> FYI, this box has always run off an ethernet card (fxp).  The on-board 
>> NIC (re) was enabled.  After disabling, the ethernet storms persisted.
>>
>>
> 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.
> 
> I've written about it in 
> http://lists.freebsd.org/pipermail/freebsd-stable/2009-January/047644.html
> 
> so far i can say that this issue is related on MSI IXP600 based 
> motherboards only. well, we should try to find out what we can do to 
> resolve it.

Any committer that would like ssh access to this box in order to fix the 
problem, mail me your public-ssh key.  :)


-- 
Dan Langille

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