From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B6196C43441 for ; Tue, 27 Nov 2018 06:18:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7DB1820989 for ; Tue, 27 Nov 2018 06:18:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7DB1820989 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=davemloft.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728772AbeK0ROx (ORCPT ); Tue, 27 Nov 2018 12:14:53 -0500 Received: from shards.monkeyblade.net ([23.128.96.9]:53484 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727331AbeK0ROx (ORCPT ); Tue, 27 Nov 2018 12:14:53 -0500 Received: from localhost (unknown [IPv6:2601:601:9f80:35cd::bf5]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) (Authenticated sender: davem-davemloft) by shards.monkeyblade.net (Postfix) with ESMTPSA id 0180E14E0F702; Mon, 26 Nov 2018 22:18:04 -0800 (PST) Date: Mon, 26 Nov 2018 22:18:04 -0800 (PST) Message-Id: <20181126.221804.911097813637187592.davem@davemloft.net> To: mst@redhat.com Cc: tiwei.bie@intel.com, jasowang@redhat.com, virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, virtio-dev@lists.oasis-open.org, wexu@redhat.com, jfreimann@redhat.com, maxime.coquelin@redhat.com Subject: Re: [PATCH net-next v3 00/13] virtio: support packed ring From: David Miller In-Reply-To: <20181127010157-mutt-send-email-mst@kernel.org> References: <20181121100330.24846-1-tiwei.bie@intel.com> <20181127010157-mutt-send-email-mst@kernel.org> X-Mailer: Mew version 6.8 on Emacs 26.1 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]); Mon, 26 Nov 2018 22:18:05 -0800 (PST) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "Michael S. Tsirkin" Date: Tue, 27 Nov 2018 01:08:08 -0500 > On Wed, Nov 21, 2018 at 06:03:17PM +0800, Tiwei Bie wrote: >> Hi, >> >> This patch set implements packed ring support in virtio driver. >> >> A performance test between pktgen (pktgen_sample03_burst_single_flow.sh) >> and DPDK vhost (testpmd/rxonly/vhost-PMD) has been done, I saw >> ~30% performance gain in packed ring in this case. >> >> To make this patch set work with below patch set for vhost, >> some hacks are needed to set the _F_NEXT flag in indirect >> descriptors (this should be fixed in vhost): >> >> https://lkml.org/lkml/2018/7/3/33 > > I went over it and I think it's correct spec-wise. > > I have some ideas for enhancements but let's start > with getting this stuff merged first. > > Acked-by: Michael S. Tsirkin Series applied.