From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754071AbdBUR0k (ORCPT ); Tue, 21 Feb 2017 12:26:40 -0500 Received: from shards.monkeyblade.net ([184.105.139.130]:55386 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754000AbdBUR0e (ORCPT ); Tue, 21 Feb 2017 12:26:34 -0500 Date: Tue, 21 Feb 2017 12:26:33 -0500 (EST) Message-Id: <20170221.122633.2147557584633743335.davem@davemloft.net> To: jasowang@redhat.com Cc: mst@redhat.com, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH net-next] virtio-net: switch to use build_skb() for small buffer From: David Miller In-Reply-To: <1487666788-9658-1-git-send-email-jasowang@redhat.com> References: <1487666788-9658-1-git-send-email-jasowang@redhat.com> X-Mailer: Mew version 6.7 on Emacs 24.5 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Tue, 21 Feb 2017 08:27:39 -0800 (PST) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jason Wang 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 Applied.