On Fri, 2006-02-03 at 01:41, Leonid Grossman wrote:
>  
> As I mentioned earlier, it would be cool to get these moderation
> tresholds from NAPI, since it can make a better guess about the overall
> system utilization than the driver can.

Agreed.

>  But even at the driver level,
> this works reasonably well.

Yep.

> - the moderation scheme is implemented in the ASIC on per channel basis.
> So, if you have workloads with very distinct latency needs, you can just
> steer it to a separate channel and have an interrupt moderation that is
> different from other flows, for example keep an interrupt per packet
> always.

Wow, that's cool.  So I could configure a particular UDP port and a
particular TCP port to always have minimum latency, but keep all the
rest of the traffic on the same NIC at minimum interrupts?  Currently
we need to use separate NICs for the two traffic types (for a number
of reasons).

What's the interface, some kind of ethtool extension or /proc magic?

Greg.
-- 
Greg Banks, R&D Software Engineer, SGI Australian Software Group.
I don't speak for SGI.


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