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Date: Tue, 18 Jul 2006 14:13:48 +0100
From: Alex Zbyslaw <xfb52@dial.pipex.com>
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To: John Baldwin <jhb@freebsd.org>
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Cc: freebsd-hackers@freebsd.org
Subject: Re: [Fwd: Interrupts question]
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John Baldwin wrote:

>>>Interrupt storm detected on "irq18: uhci2"; throttling interrupt source
>>>      
>>>
>>which ties to the disk interrupt.  Will that be slowing things down?  
>>Would increasing the storm threshold help (especially disk 
>>performance)?  Guess I'm looking for any mitigation that might be possible.
>>
>>    
>>
>
>There's no easy answer on this.  You'll have to run your own benchmarks.  If 
>you don't need USB, then you may just want to leave it out of your kernel 
>which might help some.
>
>  
>
OK, thanks for the info and suggestions.  Regrettably, leaving out USB 
isn't an option for us.  I'll schedule some benchmarking for all that 
ample free time I have :-)

Best,

--Alex