deepti dhokte - Sun Microsystems - Menlo Park United States wrote:
>>
>> It is both driver and system dependent.
>> The preference is to the finest level of granularity of course, which
>> is an interrupt per ring.
>>
>>
> I think, that would be complex and I don't see how useful.?
when rings are assigned to sub-flows, we want to toggle the interrupts
on/off rings
independently, and poll packets off them individually.
Even with interrupt-only mode, the interrupts from different rings can
be spread to multiple CPUs.
> cause, purpose of grouping would be to load-balance same traffic.
>
> although, I see your point that as we don't have correct way of knowing
> which ring of the group got packet to be drained up, individual interrupt
> per ring is the finer knowledge.
> But again as per my above comment in earlier paragraph , it's likely that
> each ring of the group would always have some packet
> also, grouping will be used in heavy network situations.
Kais
