From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lb0-f182.google.com (mail-lb0-f182.google.com [209.85.217.182]) by dpdk.org (Postfix) with ESMTP id B6806694A for ; Tue, 17 May 2016 23:48:50 +0200 (CEST) Received: by mail-lb0-f182.google.com with SMTP id h1so10831272lbj.3 for ; Tue, 17 May 2016 14:48:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to; bh=IqrioJgFQwnggEEDOZXRLGZC1WkKQQHGlgvXTDRTkfU=; b=H3PpU+hQXlJvTrUDDT3l1uBbc7X8HGQXFtnBUPDvrXt/zNK6Z8d6cQuvy6/nvz8BUS 6qR0UEmzVDYNs1fhlJbw1Nt1bCwMD6eDmYT/Z3JKy7pZuovxD2uRxhvI2ylU20y0TjZd AC26J3aVoN5joWAS4E1v/DNAO6sSz4TF+Js0i7dxf7zj35LFRbYLQCp7ml2ykCTKpe4T ItbUuFoM4MJMo17qPO2LcnIQVP4FIv/qObxOhY4HGlZLGhogiWL7sQfQ1XgMYcnqsF+i BZAxHA5Sb89zZvXMCxSGg0BsYtMvgvI2TEyGoyO0YZdSNqXRIp99IBZUBco3JlH15Dho u/Mg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=IqrioJgFQwnggEEDOZXRLGZC1WkKQQHGlgvXTDRTkfU=; b=e+e9DMOslbMcBvTiHVansWwOFwYHRHztxgw1Akc5FPAr2BMp5strJSY+IkT3HQRqEk k2ThcmHjQBb0EiC9oExhnoBMpw0XvqT2fjIZzrhToQS3vnth9frPqQrnj7gjNAZ/Ka+Q lSPRh8B7jZIHJeyCyynBHb7O0TIhwnqZX3YYhfgSJMgadPYjVkrKLmcFAaN9qbZdCM85 bOBeHIlJKgBZjRQ0nDf0j5QA/0Tz6eLJPGMK5zHo5tuNbGuENq5qjFdDkWY1tXxoDqUc TcCk4YM6a7rIxjKla6gX/dvyvi/EMmk0hjT2MxX1x0GFzuZv8JT3AFFEVDaPqkR6Y+Cg pdYQ== X-Gm-Message-State: AOPr4FWBBCWKmn1s/0IM+X34mZG1QIZlzpt2zgeZpY5mT1rZHgRK/3zJT4NeoyyCkqpWRkLtiwKQO3E7yQR5Ig== MIME-Version: 1.0 X-Received: by 10.112.205.200 with SMTP id li8mr1414876lbc.55.1463521730185; Tue, 17 May 2016 14:48:50 -0700 (PDT) Received: by 10.114.59.79 with HTTP; Tue, 17 May 2016 14:48:50 -0700 (PDT) Date: Wed, 18 May 2016 00:48:50 +0300 Message-ID: From: =?UTF-8?B?0KHQtdGA0LPQtdC5INCb0YzQstC+0LI=?= To: users@dpdk.org Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.15 Subject: [dpdk-users] Can't get line-rate with l3fwd X-BeenThere: users@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: usage discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 May 2016 21:48:51 -0000 Hi, I have two traffic generators (pktgen) and a router (l3fwd) in between. The traffic generators are connected with the router via 10Gb links. generato #1 <--10Gb full duplex--> router <--10Gb full duplex--> generator #2 Both generator send 64-bytes packets at full 10Gb rate. The problem is that l3fwd recieves only 7.5Gb/s on each port. I'd run pktgen instead of l3fwd and had the same result. If there's only one generator sending packets (10 Gb/s) and another is turned off, l3fwd can recieve all the packets (10 Gb/s) I figured out that the rte_eth_rx_burst function returns 0 quite often. This could mean that the problem is not in CPU. Is it possible to increase performance up to 20Gb/s or is there a hardware limit? I'd read the dpdk articles "How to get best performance with NICs on Intel platforms" and "IXGBE Driver", but it didn't help. The hardware is: - Intel(R) 82599EB 10 Gigabit Ethernet Controller - Intel(R) Xeon(R) CPU E5-2470 v2 @ 2.40GHz - PCI Express bandwidth of 32GT/s (Speed:5.0GT/s, Width: x8, Encoding Loss:20%) Memory: 8 hugepages x 1Gb The command is: ./build/l3fwd -c 0xf0000 -n 4 =E2=80=94 -p 0x3 =E2=80=94config=3D"(0,0,19),= (1,0,18)" =E2=80=94parse-ptype Any ideas how to resolve the perfomance issure will be appreciated. Thanks