From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <helin.zhang@intel.com>
Received: from mga11.intel.com (mga11.intel.com [192.55.52.93])
 by dpdk.org (Postfix) with ESMTP id 00DCD5A62
 for <dev@dpdk.org>; Mon, 10 Aug 2015 18:16:15 +0200 (CEST)
Received: from orsmga001.jf.intel.com ([10.7.209.18])
 by fmsmga102.fm.intel.com with ESMTP; 10 Aug 2015 09:16:15 -0700
X-ExtLoop1: 1
X-IronPort-AV: E=Sophos;i="5.15,646,1432623600"; d="scan'208";a="745756104"
Received: from kmsmsx151.gar.corp.intel.com ([172.21.73.86])
 by orsmga001.jf.intel.com with ESMTP; 10 Aug 2015 09:16:14 -0700
Received: from shsmsx152.ccr.corp.intel.com (10.239.6.52) by
 KMSMSX151.gar.corp.intel.com (172.21.73.86) with Microsoft SMTP Server (TLS)
 id 14.3.224.2; Tue, 11 Aug 2015 00:16:11 +0800
Received: from shsmsx104.ccr.corp.intel.com ([169.254.5.45]) by
 SHSMSX152.ccr.corp.intel.com ([169.254.6.188]) with mapi id 14.03.0224.002;
 Tue, 11 Aug 2015 00:16:10 +0800
From: "Zhang, Helin" <helin.zhang@intel.com>
To: "Xu, Qian Q" <qian.q.xu@intel.com>, "dev@dpdk.org" <dev@dpdk.org>
Thread-Topic: RE: [dpdk-dev] [PATCH]doc: Add performance tuning guide about
 how to get DPDK high perf on Intel platform.
Thread-Index: AdDTh2pmrWyYk4/vQJKX0RZWPbfivg==
Date: Mon, 10 Aug 2015 16:16:09 +0000
Message-ID: <F35DEAC7BCE34641BA9FAC6BCA4A12E70A8CAC6B@SHSMSX104.ccr.corp.intel.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach: 
X-MS-TNEF-Correlator: 
x-originating-ip: [10.239.127.40]
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0
Subject: Re: [dpdk-dev] [PATCH]doc: Add performance tuning guide about how
 to get DPDK high perf on Intel platform.
X-BeenThere: dev@dpdk.org
X-Mailman-Version: 2.1.15
Precedence: list
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>
X-List-Received-Date: Mon, 10 Aug 2015 16:16:16 -0000

Sorry for repeat! I should have removed the useless pieces!


> +Hardware platform Network Interface Card Essential requirements:
> +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ~~~~
> +
> +1. Get an high end Intel(r) NIC, e.g: Intel(r) XL710.
> +
> +2. Make sure each NIC has flashed the latest version of NVM/firmware,=20
> +if there
> is.
> +
> +3. Use PCIe Gen3 slots, such as Gen3 x8 or Gen3 x16 because PCIe Gen2=20
> +slots
> can't provide enough bandwidth for 2x10G and above.
Pci gen2 x 8 may not provide enough, pci gen2 x 16 may support that.

> +
> +4. When inserting NICs to the PCI slots, be careful about the NUMA.=20
> +If you will
+
> +Example
> +-------
> +
> +Below is an case of running dpdk l3fwd sample to get high performance=20
> +with
> Intel platform and NIC.
> +
> +**Note**: The scenario is to get best performance with two=20
> +Intel(r)XL710 40G
> ports. See below Figure1 as the performance test setup.
> +
> +.. figure:: img/pf_performance_test_setup.*
> +
> +**Figure 1. PF_Performance_Test_setup**
> +
> +
> +1. Insert two NICs(Intel(r)XL710) into the platform, and use one port=20
> +per card to
> get best performance. The reason using two NICs is the PCIe Gen3's limita=
tions.
> **Note**: As PCIe Gen3 can't provide 80G bandwidth for two 40G ports,=20
> but two
Pci gen3 x 8 cannot provide ....