From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by dpdk.org (Postfix) with ESMTP id BA38C4C90 for ; Thu, 4 Oct 2018 15:59:10 +0200 (CEST) Received: from smtp.corp.redhat.com (int-mx12.intmail.prod.int.phx2.redhat.com [10.5.11.27]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 08F4E86671; Thu, 4 Oct 2018 13:59:10 +0000 (UTC) Received: from [10.36.112.13] (unknown [10.36.112.13]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 6E56C9E8DE; Thu, 4 Oct 2018 13:59:06 +0000 (UTC) To: Jens Freimann , dev@dpdk.org Cc: tiwei.bie@intel.com, Gavin.Hu@arm.com References: <20181003131118.21491-1-jfreimann@redhat.com> From: Maxime Coquelin Message-ID: <298c0223-1440-e6ae-de0a-2400adc46051@redhat.com> Date: Thu, 4 Oct 2018 15:59:03 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <20181003131118.21491-1-jfreimann@redhat.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.84 on 10.5.11.27 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.26]); Thu, 04 Oct 2018 13:59:10 +0000 (UTC) Subject: Re: [dpdk-dev] [PATCH v7 0/8] implement packed virtqueues X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 04 Oct 2018 13:59:11 -0000 Hi Jens, On 10/03/2018 03:11 PM, Jens Freimann wrote: > To support out-of-order processing I used the vq_desc_extra struct to > add a .next field and use it as a list for managing descriptors. This > seemed to add less complexity to the code than adding a new data > structure to use as a list for packed queue descriptors. Looking at the series, I don't see a specific path when in-order has been negotiated. Is it intended? Wouldn't we save some cache misses when assuming packets are processed in-order? Maxime