netdev - Re: [PATCH net-next] virtio-net: switch to use build

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Date:   Tue, 21 Feb 2017 12:26:33 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     jasowang@...hat.com
Cc:     mst@...hat.com, virtualization@...ts.linux-foundation.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next] virtio-net: switch to use build_skb() for
 small buffer

From: Jason Wang <jasowang@...hat.com>
Date: Tue, 21 Feb 2017 16:46:28 +0800

> This patch switch to use build_skb() for small buffer which can have
> better performance for both TCP and XDP (since we can work at page
> before skb creation). It also remove lots of XDP codes since both
> mergeable and small buffer use page frag during refill now.
> 
>                        Before   | After
> XDP_DROP(xdp1) 64B  :  11.1Mpps | 14.4Mpps
> 
> Tested with xdp1/xdp2/xdp_ip_tx_tunnel and netperf.
> 
> Signed-off-by: Jason Wang <jasowang@...hat.com>

Applied.