On Sat, 2012-12-29 at 19:58 +0100, Eric Dumazet wrote:

Le samedi 29 décembre 2012 à 09:40 -0800, Eric Dumazet a écrit :

quoted

Please post your new tcpdump then ;)

also post "netstat -s" from root and test ns after your wgets

Also try following bnx2 patch.

It should help GRO / TCP coalesce

bnx2 should be the last driver not using skb head_frag

And of course, you should make sure all your bnx2 interrupts are handled
by the same cpu.

Or else, packets might be reordered because the way dev_forward_skb()
works.

(CPU X gets a bunch of packets from eth0, forward them via netif_rx() in
the local CPU X queue, NAPI is ended on eth0)

CPU Y gets a bunch of packets from eth0, forward them via netif_rx() in
the local CPU Y queue.

CPU X and Y process their local queue in // -> packets are delivered Out
of order to TCP stack

Alternative is to setup RPS on your veth1 device, to force packets being
delivered/handled by a given cpu