From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from alln-iport-6.cisco.com (alln-iport-6.cisco.com [173.37.142.93]) by dpdk.org (Postfix) with ESMTP id 22975201 for ; Wed, 15 Feb 2017 13:35:58 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=1099; q=dns/txt; s=iport; t=1487162159; x=1488371759; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=3Sxf/CIMxn5QqfUaiN2J16JeE+Mq9mmK54/vipIKjJE=; b=bkIDTmmf4vYMbh/9owCF6W8qR+hFIv0LwmVpGXWzEbAEYasDZPyTTX/u bFh5GkIyTRF2UzyKRWfs3kuUIuHKBQGDYgh03oGW4FjcL2DRMnk5skPrm khuLYDH28+V568b/pEx9vPOyTTwb37F5D4wpldHdcwj2FjSEiXhE8pFWh Y=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0ATAQChSqRY/4wNJK1UChkBAQEBAQEBA?= =?us-ascii?q?QEBAQcBAQEBAYNSgWoHjVqSEJMngg+CDIYiAoILPxgBAgEBAQEBAQFiKIRwAQE?= =?us-ascii?q?BBDo/DAQCAQgRBAEBHwkHMhQJCAEBBA4FCIljshOLYwEBAQEBAQEBAQEBAQEBA?= =?us-ascii?q?QEBAQEBAR2GTYRvhCyGDQWbdwGSCoIEhReJdJMWAR84gQBRFYcAdYh7AYELAQE?= =?us-ascii?q?B?= X-IronPort-AV: E=Sophos;i="5.35,165,1484006400"; d="scan'208";a="385945232" Received: from alln-core-7.cisco.com ([173.36.13.140]) by alln-iport-6.cisco.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 15 Feb 2017 12:35:57 +0000 Received: from XCH-RTP-015.cisco.com (xch-rtp-015.cisco.com [64.101.220.155]) by alln-core-7.cisco.com (8.14.5/8.14.5) with ESMTP id v1FCZvZJ026596 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=FAIL); Wed, 15 Feb 2017 12:35:57 GMT Received: from xch-rtp-017.cisco.com (64.101.220.157) by XCH-RTP-015.cisco.com (64.101.220.155) with Microsoft SMTP Server (TLS) id 15.0.1210.3; Wed, 15 Feb 2017 07:35:57 -0500 Received: from xch-rtp-017.cisco.com ([64.101.220.157]) by XCH-RTP-017.cisco.com ([64.101.220.157]) with mapi id 15.00.1210.000; Wed, 15 Feb 2017 07:35:56 -0500 From: "Hanoch Haim (hhaim)" To: Thomas Monjalon , "Mcnamara, John" CC: "dev@dpdk.org" , "Ido Barnea (ibarnea)" Thread-Topic: [dpdk-dev] DPDK 17.02 RC-3 performance degradation of ~10% Thread-Index: AdKGt7fnrieEjXy/RRu8l+2cQlkqSAAC9/ZdADDdnBA= Date: Wed, 15 Feb 2017 12:35:56 +0000 Message-ID: <09de078b09d44c47b78bd5234462505e@XCH-RTP-017.cisco.com> References: <1793839.gziRDArGs7@xps13> In-Reply-To: <1793839.gziRDArGs7@xps13> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [64.103.125.60] 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: Wed, 15 Feb 2017 12:35:59 -0000 Hi Thomas and John, We found that the performance degradation is not related to DPDK 17.02 for = Intel XL710/ixgbe. Now It is back to normal. The fix was to add a one unre= lated line to a specific file. This probably changed the instructions trace= . This line is not related to DP or CP. (We still don't fully understand th= at). Mlx5 small degradation wasn't solved yet.=20 Thanks, Hanoh -----Original Message----- From: Thomas Monjalon [mailto:thomas.monjalon@6wind.com]=20 Sent: Tuesday, February 14, 2017 3:05 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 followin= g > > NICS: [...] >=20 > 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?