Re: How to load balance interrupts of a NIC on the PCI-MSI-edge driver in CentOS? :(

[Alex Flex <aflexzor@xxxxxxxxx>]

John,

On 05/20/2013 10:48 PM, John R Pierce wrote:
>
> afaik, IRQs from a single device have to be handled serially, you can't
> have more than one active IRQ at the same time.
>
> so there's really no point in distributing them across multiple CPU
> cores.  let the other cores handle user space and other sorts of IOs.
>
> SYN flooding is a pathological condition thats not going to happen under
> regular workloads, how does your system handle actual network traffic
> when it approaches network saturation ?
>
In summary, its very easy to hit a low number of packets/second flood 
and have the server start looking legitimate ones. I find it hard to 
believe that one cannot benefit from load balancing the interrupts?

Alex
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