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

Tue May 21 04:48:50 UTC 2013
John R Pierce <pierce at hogranch.com>

On 5/20/2013 9:53 PM, Alex Flex wrote:
> a.) Could anyody please help me with a solution so that iam able to
> balance equally the interrupts on both cores?
> b.) Is there anyway to actually assign more interrupts to this IRQ (25)
> or is that something that the kernel discretly takes care of?

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 ?

john r pierce                                      37N 122W
somewhere on the middle of the left coast