From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by dpdk.org (Postfix) with ESMTP id 78344201 for ; Tue, 14 Feb 2017 13:19:20 +0100 (CET) Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 14 Feb 2017 04:19:19 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.35,161,1484035200"; d="scan'208";a="65592359" Received: from irsmsx103.ger.corp.intel.com ([163.33.3.157]) by fmsmga006.fm.intel.com with ESMTP; 14 Feb 2017 04:19:17 -0800 Received: from irsmsx111.ger.corp.intel.com (10.108.20.4) by IRSMSX103.ger.corp.intel.com (163.33.3.157) with Microsoft SMTP Server (TLS) id 14.3.248.2; Tue, 14 Feb 2017 12:19:17 +0000 Received: from irsmsx103.ger.corp.intel.com ([169.254.3.77]) by irsmsx111.ger.corp.intel.com ([169.254.2.109]) with mapi id 14.03.0248.002; Tue, 14 Feb 2017 12:19:17 +0000 From: "Mcnamara, John" To: "Hanoch Haim (hhaim)" , "dev@dpdk.org" CC: "Ido Barnea (ibarnea)" Thread-Topic: [dpdk-dev] DPDK 17.02 RC-3 performance degradation of ~10% Thread-Index: AdKGt7fnrieEjXy/RRu8l+2cQlkqSAABG0EQ Date: Tue, 14 Feb 2017 12:19:16 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ctpclassification: CTP_IC x-titus-metadata-40: eyJDYXRlZ29yeUxhYmVscyI6IiIsIk1ldGFkYXRhIjp7Im5zIjoiaHR0cDpcL1wvd3d3LnRpdHVzLmNvbVwvbnNcL0ludGVsMyIsImlkIjoiZTEyMDNkM2UtOTA1Ny00NjYzLWE4NzctNTc2NGQxMDMxYTVhIiwicHJvcHMiOlt7Im4iOiJDVFBDbGFzc2lmaWNhdGlvbiIsInZhbHMiOlt7InZhbHVlIjoiQ1RQX0lDIn1dfV19LCJTdWJqZWN0TGFiZWxzIjpbXSwiVE1DVmVyc2lvbiI6IjE1LjkuNi42IiwiVHJ1c3RlZExhYmVsSGFzaCI6ImZLSGpvQ09jK2ZyRmRIeEpVVXcyTVNnbnQ4ajFqT1JIZk9PWEs4MWNsWUk9In0= 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 12:19:20 -0000 > -----Original Message----- > From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Hanoch Haim (hhaim) > Sent: Tuesday, February 14, 2017 11:45 AM > To: dev@dpdk.org > Cc: Ido Barnea (ibarnea) ; Hanoch Haim (hhaim) > > Subject: [dpdk-dev] DPDK 17.02 RC-3 performance degradation of ~10% >=20 > Hi, >=20 > 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: >=20 > XL710 : 10-15% > ixgbe : 8% in one case > mlx5 : 8% 2 case > X710 : no impact (same driver as XL710) > VIC : no impact >=20 > It might be related to DPDK infra change as it affects more than one > driver (maybe mbuf?). > Wanted to know if this is expected before investing more into this. The Y > axis numbers in all the following charts (from Grafana) are MPPS/core > which means how many cycles per packet the CPU invest. Bigger MPPS/core > means less CPU cycles to send packet. Hi, Thanks for the update. From a quick check with the Intel test team they hav= en't seen this. They would have flagged it if they had. Maybe someone from = Mellanox/Netronome could confirm as well. Could you do a git-bisect to identify the change that caused this? John