From mboxrd@z Thu Jan 1 00:00:00 1970 From: Priyanka Subject: Performance issue in DPDK setup Date: Thu, 19 Jan 2017 12:17:04 +0530 Message-ID: <588060E8.5010508@cse.iitb.ac.in> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit To: "users@dpdk.org" , "dev@dpdk.org" Return-path: Received: from smtp1.iitb.ac.in (smtp1.iitb.ac.in [103.21.127.13]) by dpdk.org (Postfix) with ESMTP id BC031FB54 for ; Thu, 19 Jan 2017 07:47:02 +0100 (CET) Received: from ldns2.iitb.ac.in (ldns2.iitb.ac.in [10.200.12.2]) by smtp1.iitb.ac.in (Postfix) with SMTP id 80FE911D for ; Thu, 19 Jan 2017 12:17:01 +0530 (IST) List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Hi All, We have VMs on a physical server with both VMs having 1 core 7 GB RAM with DPDK 16.04. The VMs are communicating using SR-IOV (per VM 1 VF is assigned). We are performance benchmarking the setup with our application which sends burst of packet on the sender VM and receiver VM receives it in a ring. But we are unable to get good performance at L2 layer also. The problem we noticed is that if we attempt to send a burst of 1 lakh (1,00,000) packet at a go, the receiver side is able to receive only 40,000 packets. We feel there is some buffer overflow happening but we cannot trace it. So, we feel a uniform rate of sending packet and not a huge burst would be a better application for benchmarking. Is there a application available in DPDK where we can specify the sending rate i.e. ask the application to send 1 Gbps traffic etc, so that it would send 1 Gb traffic uniformly in the second. Please guide us on this. Thanks, Priyanka