From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wg0-x233.google.com (mail-wg0-x233.google.com [IPv6:2a00:1450:400c:c00::233]) by dpdk.org (Postfix) with ESMTP id A600D6931 for ; Fri, 24 May 2013 16:41:35 +0200 (CEST) Received: by mail-wg0-f51.google.com with SMTP id b12so2670749wgh.18 for ; Fri, 24 May 2013 07:41:40 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=from:organization:to:subject:date:user-agent:cc:references :in-reply-to:mime-version:content-type:content-transfer-encoding :message-id:x-gm-message-state; bh=cjPz6P/jcA2bYtvuO8OJGh8Cyg5JiDTrDgvpOFd2Ft8=; b=g0JCSj9QypBn1p0MQwV/r29tJzE7VCkZ1FTNMlt/hr9PAjCMFCdRJCll5oQwWFSwP9 mbRxWVLkfikH9nSpbwvOZ+g1zA3fDCeOZrp6qf28BrkAQLmjCsjH0uYtLWOF4ESslGwY tzQltWimTXxzh0fzfvUrkuZ1lgQCpthe73rX5hnd5r7WP9AJuHB5SJTkDm/Heuo+Nid5 8wH2np8pafajinGjHujURv+7KoXOZqR8UEz6hAkptKsLDbKNzaVUeHMORiMzLsyWtKIp kYzRwiWG4CQrGSLHpoJ0vXrnaWuGxVCRIPXGOly0C0iaUB9gMC9+mv/19jZYRwZ+vrQA JrDw== X-Received: by 10.180.78.10 with SMTP id x10mr49629662wiw.30.1369406500063; Fri, 24 May 2013 07:41:40 -0700 (PDT) Received: from angus.localnet (6wind.net2.nerim.net. [213.41.180.237]) by mx.google.com with ESMTPSA id b11sm42756766wiv.10.2013.05.24.07.41.37 for (version=TLSv1.2 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 24 May 2013 07:41:38 -0700 (PDT) From: Thomas Monjalon Organization: 6WIND To: Patrick Mahan Date: Fri, 24 May 2013 16:41:38 +0200 User-Agent: KMail/1.13.7 (Linux/3.2.0-4-amd64; KDE/4.8.4; x86_64; ; ) References: <519F74F6.3000903@mahan.org> In-Reply-To: <519F74F6.3000903@mahan.org> MIME-Version: 1.0 Content-Type: Text/Plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Message-Id: <201305241641.38896.thomas.monjalon@6wind.com> X-Gm-Message-State: ALoCoQniXr+hxsQ/IvHbB5ZzRHbPjgjtDvLmMi42UFtf6N0VYIbsfRqCUawU+zFQtWgvhqVC7XD9 Cc: dev@dpdk.org Subject: Re: [dpdk-dev] Best example for showing throughput? X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 May 2013 14:41:36 -0000 Hello, 24/05/2013 16:11, Patrick Mahan : > Intel Xeon E5-2690 (8 physical, 16 virtual) How many CPU sockets have you ? > 64 Gbyte DDR3 memory > Intel 82599EB-SPF dual port 10GE interface > CentOS 6.4 (2.6.32-358.6.1.el6.x86_64) > The 82599 is in a 16x PCI-e slot. Check the datasheet of your motherboard. Are you sure it is wired as a 16x PCI-e ? Is it connected to the right NUMA node ? > I have it attached to an IXIA box. I have been running the app 'testpmd' > in iofwd mode with 2K rx/tx descriptors and 512 burst/mbcache. I have been > varying the # of queues and unfortunately, I am not seeing full line rate. What is your command line ? > I am seeing about 20-24% droppage on the receive side. It doesn't seem to > matter the # of queues. If queues are polled by different cores, it should matter. > Question 1: Is 'testpmd' the best application for this type of testing? If > not, which program? Or do I need to roll my own? testpmd is the right application for performance benchmark. It is also possible to use examples l2fwd/l3fwd but you should keep testpmd. > Question 2: I have blacklisted the Intel i350 ports on the motherboard and > am using ssh to access the platform. Could this be affecting the test? You mean i350 is used for ssh ? It shouldn't significantly affect your test. -- Thomas