Re: [PATCH] loop unrolling in net/sched/sch_generic.c

[Eric Dumazet <dada1@xxxxxxxxxxxxx>]

Thomas Graf a écrit :
> I think you got me wrong, the whole point of this qdisc
> is to prioritize which means that we cannot dequeue from
> prio 1 as long as the queue in prio 0 is not empty. 

if prio 0 is not empty, then the last

if (!skb_queue_empty(list))
     best = list;

will set 'best' to the prio 0 list, and we dequeue the packet on this prio 0 
list, not on prio 1 or prio 2.

> If you have no traffic at all for prio=0 and prio=1 then
> the best solution is to replace the qdisc on the device
> with a simple fifo.

Yes sure, but I know that already. Unfortunatly I have some trafic on 
prio=1 and prio=0 (about 5 %)

Thank you
Eric