From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: <pablo.de.lara.guarch@intel.com> Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by dpdk.org (Postfix) with ESMTP id 275EEC3F8 for <dev@dpdk.org>; Fri, 24 Jul 2015 03:14:03 +0200 (CEST) Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by orsmga102.jf.intel.com with ESMTP; 23 Jul 2015 18:14:03 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.15,535,1432623600"; d="scan'208";a="768629400" Received: from irsmsx107.ger.corp.intel.com ([163.33.3.99]) by fmsmga002.fm.intel.com with ESMTP; 23 Jul 2015 18:14:02 -0700 Received: from irsmsx108.ger.corp.intel.com ([169.254.11.22]) by IRSMSX107.ger.corp.intel.com ([169.254.10.245]) with mapi id 14.03.0224.002; Fri, 24 Jul 2015 02:14:01 +0100 From: "De Lara Guarch, Pablo" <pablo.de.lara.guarch@intel.com> To: "Xu, Qian Q" <qian.q.xu@intel.com>, "Qiu, Michael" <michael.qiu@intel.com>, "dev@dpdk.org" <dev@dpdk.org> Thread-Topic: [dpdk-dev] [PATCH] examples/l3fwd: increase lookup burst size to 8 Thread-Index: AQHQxWJr2vJInMqfhk6iAZytaKkUPp3pPayAgACF4gD///tyAIAAEhPA Date: Fri, 24 Jul 2015 01:14:00 +0000 Message-ID: <E115CCD9D858EF4F90C690B0DCB4D8973C7D4C20@IRSMSX108.ger.corp.intel.com> References: <1437667927-18113-1-git-send-email-pablo.de.lara.guarch@intel.com> <533710CFB86FA344BFBF2D6802E60286046ED558@SHSMSX101.ccr.corp.intel.com> <E115CCD9D858EF4F90C690B0DCB4D8973C7D3BB4@IRSMSX108.ger.corp.intel.com> <82F45D86ADE5454A95A89742C8D1410E01D911EF@shsmsx102.ccr.corp.intel.com> In-Reply-To: <82F45D86ADE5454A95A89742C8D1410E01D911EF@shsmsx102.ccr.corp.intel.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [163.33.239.182] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Subject: Re: [dpdk-dev] [PATCH] examples/l3fwd: increase lookup burst size to 8 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: Fri, 24 Jul 2015 01:14:04 -0000 > -----Original Message----- > From: Xu, Qian Q > Sent: Friday, July 24, 2015 2:09 AM > To: De Lara Guarch, Pablo; Qiu, Michael; dev@dpdk.org > Subject: RE: [dpdk-dev] [PATCH] examples/l3fwd: increase lookup burst siz= e > to 8 >=20 > And this patch will be only related to exact match, the common usage of l= pm > is not impacted. That is right, thanks for pointing it out, Qian! Pablo >=20 > Thanks > Qian >=20 > -----Original Message----- > From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of De Lara Guarch, > Pablo > Sent: Friday, July 24, 2015 8:29 AM > To: Qiu, Michael; dev@dpdk.org > Subject: Re: [dpdk-dev] [PATCH] examples/l3fwd: increase lookup burst siz= e > to 8 >=20 > Hi Michael, >=20 > > -----Original Message----- > > From: Qiu, Michael > > Sent: Thursday, July 23, 2015 6:26 PM > > To: De Lara Guarch, Pablo; dev@dpdk.org > > Subject: RE: [dpdk-dev] [PATCH] examples/l3fwd: increase lookup burst > > size to 8 > > > > Hi, Pablo > > > > Is there any performance data for this change? >=20 > With this change, performance increases around 12% compared to the > version before the patch. >=20 > Thanks, > Pablo >=20 > > > > Thanks, > > Michael > > > > -----Original Message----- > > From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Pablo de Lara > > Sent: Thursday, July 23, 2015 9:12 AM > > To: dev@dpdk.org > > Subject: [dpdk-dev] [PATCH] examples/l3fwd: increase lookup burst size > > to 8 > > > > With the new hash implementation, the minimum lookup burst size to get > > good performance is 8, since its internal pipeline consists of 4 > > stages of 2 entries each, so to avoid duplication, burst size should be= 8 or > more entries. > > > > Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>