From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by dpdk.org (Postfix) with ESMTP id 00DCD5A62 for ; 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" To: "Xu, Qian Q" , "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: 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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-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 ....