High CPU interrupt load on intel I350T4 with igb on 8.3

[Eugene Grosbein]

On 09.05.2013 23:25, Barney Cordoba wrote:

>> Network device driver is not guilty here, that's just pf's
>> contention
>> running in igb's context.
>>
>> Eugene Grosbein
> 
> They're both at play. Single threadedness aggravates subsystems that 
> have too many lock points.
> 
> It can also be "solved" with using 1 queue, because then you don't
> have 4 queues going into a single thread.

Again, the problem is within pf(4)'s global lock, not in the igb(4).