From mboxrd@z Thu Jan  1 00:00:00 1970
From: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Subject: Re: [PATCH 0/2] vhost: Add support to indirect
	descriptors on Rx path
Date: Fri, 21 Oct 2016 23:58:58 +0800
Message-ID: <20161021155858.GU16751@yliu-dev.sh.intel.com>
References: <1476804939-8675-1-git-send-email-maxime.coquelin@redhat.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Cc: dev@dpdk.org, mst@redhat.com, zhihong.wang@intel.com,
 ciara.loftus@intel.com
To: Maxime Coquelin <maxime.coquelin@redhat.com>
Return-path: <dev-bounces@dpdk.org>
Received: from mga05.intel.com (mga05.intel.com [192.55.52.43])
 by dpdk.org (Postfix) with ESMTP id 9828B2716
 for <dev@dpdk.org>; Fri, 21 Oct 2016 17:58:05 +0200 (CEST)
Content-Disposition: inline
In-Reply-To: <1476804939-8675-1-git-send-email-maxime.coquelin@redhat.com>
List-Id: patches and discussions about DPDK <dev.dpdk.org>
List-Unsubscribe: <http://dpdk.org/ml/options/dev>,
 <mailto:dev-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://dpdk.org/ml/archives/dev/>
List-Post: <mailto:dev@dpdk.org>
List-Help: <mailto:dev-request@dpdk.org?subject=help>
List-Subscribe: <http://dpdk.org/ml/listinfo/dev>,
 <mailto:dev-request@dpdk.org?subject=subscribe>
Errors-To: dev-bounces@dpdk.org
Sender: "dev" <dev-bounces@dpdk.org>

On Tue, Oct 18, 2016 at 05:35:37PM +0200, Maxime Coquelin wrote:
> Indirect descriptor feature has been enabled in v16.11-rc1, but only TX path
> was implemented.
> However, some configurations expect it is supported for the Rx path:
>  - Windows guests with and without mergeable buffers enabled
>  - Linux guests with Kernel drivr with mergeable buffers disabled
> 
> This series add the support of indirect descs for the Rx path, and has been
> tested with following configurations:
>  - Windows guest with indirect ON, mergeeable ON/OFF
>  - Linux guest with Kernel driver with indirect ON/OFF, mergeable ON/OFF
>  - Linux guest with Virtio PMD with mergeable ON/OFF
> 
> The performance degradation measured with/without this series with Virtio PMD
> is around 1% (which doesn't use indirect descs for the Rx path).
> 
> The series is based on top of "vhost: optimize mergeable Rx path" v7.

Series applied to dpdk-next-virtio.

Thanks.

	--yliu
> 
> Maxime Coquelin (2):
>   vhost: Add indirect desc support to Rx mergeable path
>   vhost: Add indirect desc support to the Rx no-mergeable path
> 
>  lib/librte_vhost/virtio_net.c | 73 ++++++++++++++++++++++++++++++-------------
>  1 file changed, 51 insertions(+), 22 deletions(-)
> 
> -- 
> 2.7.4