From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by dpdk.org (Postfix) with ESMTP id 53B3F201 for ; Tue, 14 Feb 2017 14:38:48 +0100 (CET) Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 14 Feb 2017 05:38:48 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.35,161,1484035200"; d="scan'208";a="225154451" Received: from irsmsx105.ger.corp.intel.com ([163.33.3.28]) by fmsmga004.fm.intel.com with ESMTP; 14 Feb 2017 05:38:45 -0800 Received: from irsmsx108.ger.corp.intel.com ([169.254.11.173]) by irsmsx105.ger.corp.intel.com ([169.254.7.38]) with mapi id 14.03.0248.002; Tue, 14 Feb 2017 13:38:45 +0000 From: "De Lara Guarch, Pablo" To: "De Lara Guarch, Pablo" , Thomas Monjalon , "Hanoch Haim (hhaim)" CC: "dev@dpdk.org" , "Mcnamara, John" , "Ido Barnea (ibarnea)" Thread-Topic: [dpdk-dev] DPDK 17.02 RC-3 performance degradation of ~10% Thread-Index: AQHShrylJkn8jebyMU6+9aFYjj767qFoeFsAgAADw7CAAAWMQA== Date: Tue, 14 Feb 2017 13:38:44 +0000 Message-ID: References: <1793839.gziRDArGs7@xps13> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-titus-metadata-40: eyJDYXRlZ29yeUxhYmVscyI6IiIsIk1ldGFkYXRhIjp7Im5zIjoiaHR0cDpcL1wvd3d3LnRpdHVzLmNvbVwvbnNcL0ludGVsMyIsImlkIjoiNzkxYzNmZjQtZWVjNi00YWY5LWFkYWYtOTA2MGM4YzdkOTJmIiwicHJvcHMiOlt7Im4iOiJDVFBDbGFzc2lmaWNhdGlvbiIsInZhbHMiOlt7InZhbHVlIjoiQ1RQX0lDIn1dfV19LCJTdWJqZWN0TGFiZWxzIjpbXSwiVE1DVmVyc2lvbiI6IjE1LjkuNi42IiwiVHJ1c3RlZExhYmVsSGFzaCI6Im1naVd5bWhSM3IweW1SeHBxOGNoTWh0K3psM2pZMElOYWFyK1h1cDVSdVE9In0= x-ctpclassification: CTP_IC x-originating-ip: [163.33.239.180] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Subject: Re: [dpdk-dev] DPDK 17.02 RC-3 performance degradation of ~10% 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: Tue, 14 Feb 2017 13:38:49 -0000 > -----Original Message----- > From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of De Lara Guarch, > Pablo > Sent: Tuesday, February 14, 2017 1:28 PM > To: Thomas Monjalon; Hanoch Haim (hhaim) > Cc: dev@dpdk.org; Mcnamara, John; Ido Barnea (ibarnea) > Subject: Re: [dpdk-dev] DPDK 17.02 RC-3 performance degradation of ~10% >=20 > Hi, >=20 > > -----Original Message----- > > From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Thomas > Monjalon > > Sent: Tuesday, February 14, 2017 1:05 PM > > To: Hanoch Haim (hhaim) > > Cc: dev@dpdk.org; Mcnamara, John; Ido Barnea (ibarnea) > > Subject: Re: [dpdk-dev] DPDK 17.02 RC-3 performance degradation of > ~10% > > > > 2017-02-14 12:19, Mcnamara, John: > > > From: Hanoch Haim (hhaim) > > > > We (trex traffic generator project) upgrade DPDK version from 16.07 > to > > > > 17.02arc-3 and we experienced a performance degradation on the > > following > > > > NICS: > > [...] > > > > > > Could you do a git-bisect to identify the change that caused this? > > > > +1 for the bisect. > > Please could you try to isolate the change causing the regression? >=20 > I reproduced the regression for i40e driver (3-4% degradation, not 10%). > The commit that caused it was the following: > 5ea0942129a4 ("net/i40e: add packet type metadata in vector Rx") >=20 > This commit was introduced in 16.11, and not in 17.02. This caused some > performance degradation > in the i40e vector RX, due to the addition of packet type parsing in the > PMD. >=20 > Thanks, > Pablo Sorry, I was talking about RX and not TX, so this is probably not valid the= n. Pablo