From mboxrd@z Thu Jan 1 00:00:00 1970 From: Priyanka Subject: seg fault in InterVM communication using virtio Date: Mon, 20 Feb 2017 16:00:12 +0530 Message-ID: <58AAC534.7000004@cse.iitb.ac.in> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Cc: "mitaliyada@cse.iitb.ac.in" 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 F0E21374E for ; Mon, 20 Feb 2017 11:30:13 +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 99ABC7E for ; Mon, 20 Feb 2017 16:00:12 +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 2 VM running on qemu-kvm hypervisor. We have provided vNIC to the VMs using macvtap device and virtio as the device model in bridge mode. We are running DPDK applications (udp client and server) on the VMs. We observe that the inter-VM communication is not happening using drivers i.e igb_uio and uio_pci_generic. We were able to communicate between the VMs properly using SRIOV. But we were not getting performance as expected so we switched to virtio. But using virtio the DPDK communication hangs after sending 128 packets. We also observe a seg fault in the dmesg of the VM. Please provide us some guideline to do the inter-VM communication using virtio. Are we correct if we are using rte_eth_tx/rx_burst to send and receive packets from the vNIC. Thanks, Priyanka