Re: RFC: NAPI packet weighting patch

[jamal <hadi@xxxxxxxxxx>]

On Thu, 2005-26-05 at 14:36 -0700, Mitch Williams wrote:
> The following patch (which applies to 2.6.12rc4) adds a new sysctl
> parameter called 'netdev_packet_weight'.  This parameter controls how many
> backlog work units each RX packet is worth.
> 
> With the parameter set to 0 (the default), NAPI polling works exactly as
> it does today:  each packet is worth one backlog work unit, and the
> maximum number of received packets that will be processed in any given
> softirq is controlled by the 'netdev_max_backlog' parameter.
> 

NAPI uses already using a Weighted Round robin scheduling scheme know as
DRR.
I am not sure providing a weight scale on the weight is enhancing
anything. 
Did you try to just reduce the weight instead to make it smaller
instead? i.e take the resultant weight of you using a shift and set that
as the weight.

cheers,
jamal