Subject: Re: [PATCH] genirq: Set initial default irq affinity to just CPU0

From: David Miller <[email-masked]>
Date: Sat, 25 Oct 2008 21:05:13 -0700 (PDT)

From: Kevin Diggs <[email-masked]>
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.

This is what the userland IRQ balance daemon does.