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Date: Mon, 27 Oct 2008 11:36:21 -0600
From: "Chris Friesen" <cfriesen@nortel.com>
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To: David Miller <davem@davemloft.net>
Subject: Re: [PATCH] genirq: Set initial default irq affinity to just CPU0
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David Miller wrote:
> From: Kevin Diggs <kevdig@hypersurf.com>
> Date: Sat, 25 Oct 2008 15:53:46 -0700
> 
>> What does this all mean to my GigE (dual 1.1 GHz 7455s)? Is this
>> thing supposed to be able to spread irq between its cpus?
> 
> Networking interrupts should lock onto a single CPU, unconditionally.
> That's the optimal way to handle networking interrupts, especially
> with multiqueue chips.

What about something like the Cavium Octeon, where we have 16 cores but a 
single core isn't powerful enough to keep up with a gigE device?

Chris