From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail2.vvv6.jp (mail2.vvv6.jp [115.69.228.5]) by dpdk.org (Postfix) with ESMTP id B05101B29B for ; Thu, 9 Nov 2017 02:09:21 +0100 (CET) Received: from NW3ANNEXKIM (unknown [IPv6:2402:c800:ff06:0:a07e:e987:ded7:3bc4]) by mail2.vvv6.jp (Postfix) with ESMTPSA id 237FA75902B for ; Thu, 9 Nov 2017 10:09:18 +0900 (JST) From: "KHKim" To: Date: Thu, 9 Nov 2017 10:08:27 +0900 Message-ID: <001e01d358f7$4071e9d0$c155bd70$@jp> MIME-Version: 1.0 X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: AdNY9z9d1UZ2wL20RWayb6PkJXcIGQ== Content-Language: ja Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Content-Filtered-By: Mailman/MimeDel 2.1.15 Subject: [dpdk-users] Limitation of performance the X550(RX pps) X-BeenThere: users@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK usage discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 09 Nov 2017 01:09:22 -0000 Hi, all. Could you tell us whether the events described below are within assumptions ? >>From server1 where DPDK was installed to server2 installed in the same way, we sent 14.88 million 64byte-length packets with pktgen. At first, we installed x540-t2 in server1 and server2, and next did x550-t2 in server1 and server2. In the measurement, when the packet-length is 64 bytes, x540-t2 received all 14.88 million packets, while x550-t2 received only 4.82 million packets. When the packet-length is 128 bytes, x540-t2 received 8.44 million packets, while x550-t2 received only 4.62 million packets. These numbers show the performance of x540-t2 will be better than that of x550-t2 although, given the specifications, the results should be the opposite. I don't know why it will result like this. Could someone let us know why this could happen ?, and if there is a difficult part to understand, please let us know.