From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753348AbdEQERu (ORCPT ); Wed, 17 May 2017 00:17:50 -0400 Received: from mx1.redhat.com ([209.132.183.28]:42102 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751064AbdEQEPY (ORCPT ); Wed, 17 May 2017 00:15:24 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com C36C637E67 Authentication-Results: ext-mx05.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx05.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=jasowang@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com C36C637E67 From: Jason Wang To: mst@redhat.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Jason Wang Subject: [PATCH net-next V5 0/9] vhost_net rx batch dequeuing Date: Wed, 17 May 2017 12:14:36 +0800 Message-Id: <1494994485-12994-1-git-send-email-jasowang@redhat.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Wed, 17 May 2017 04:15:24 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This series tries to implement rx batching for vhost-net. This is done by batching the dequeuing from skb_array which was exported by underlayer socket and pass the sbk back through msg_control to finish userspace copying. This is also the requirement for more batching implemention on rx path. Tests shows at most 7.56% improvment bon rx pps on top of batch zeroing and no obvious changes for TCP_STREAM/TCP_RR result. Please review. Thanks Changes from V4: - drop batch zeroing patch - renew the performance numbers - move skb pointer array out of vhost_net structure Changes from V3: - add batch zeroing patch to fix the build warnings Changes from V2: - rebase to net-next HEAD - use unconsume helpers to put skb back on releasing - introduce and use vhost_net internal buffer helpers - renew performance numbers on top of batch zeroing Changes from V1: - switch to use for() in __ptr_ring_consume_batched() - rename peek_head_len_batched() to fetch_skbs() - use skb_array_consume_batched() instead of skb_array_consume_batched_bh() since no consumer run in bh - drop the lockless peeking patch since skb_array could be resized, so it's not safe to call lockless one Jason Wang (8): skb_array: introduce skb_array_unconsume ptr_ring: introduce batch dequeuing skb_array: introduce batch dequeuing tun: export skb_array tap: export skb_array tun: support receiving skb through msg_control tap: support receiving skb from msg_control vhost_net: try batch dequing from skb array Michael S. Tsirkin (1): ptr_ring: add ptr_ring_unconsume drivers/net/tap.c | 25 +++++++-- drivers/net/tun.c | 31 ++++++++--- drivers/vhost/net.c | 128 +++++++++++++++++++++++++++++++++++++++++++--- include/linux/if_tap.h | 5 ++ include/linux/if_tun.h | 5 ++ include/linux/ptr_ring.h | 120 +++++++++++++++++++++++++++++++++++++++++++ include/linux/skb_array.h | 31 +++++++++++ 7 files changed, 327 insertions(+), 18 deletions(-) -- 2.7.4