Re: [PATCH v3 net-next 08/14] mlx4: use order-0 pages for RX
From: Eric Dumazet <edumazet@google.com>
Date: 2017-02-14 00:22:44
On Mon, Feb 13, 2017 at 3:47 PM, Alexander Duyck [off-list ref] wrote:
Actually it depends on the use case. In the case of pktgen packets they are usually dropped pretty early in the receive path. Think something more along the lines of a TCP syn flood versus something that would be loading up a socket.
So I gave another spin an it, reducing the MTU on the sender to 500 instead of 1500 to triple the load (in term of packets per second) since the sender seems to hit some kind of limit around 30Gbit. Number of packets we process on one RX queue , and one TCP flow. Current patch series : 6.3 Mpps Which is not too bad ;) This number does not change putting your __page_frag_cache_drain() trick.