From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47889) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XUlna-0006DD-KN for qemu-devel@nongnu.org; Thu, 18 Sep 2014 20:11:50 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XUlnT-00015u-5c for qemu-devel@nongnu.org; Thu, 18 Sep 2014 20:11:42 -0400 Received: from mail-pa0-f48.google.com ([209.85.220.48]:41288) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XUlnS-00015L-WE for qemu-devel@nongnu.org; Thu, 18 Sep 2014 20:11:35 -0400 Received: by mail-pa0-f48.google.com with SMTP id fb1so1699066pad.35 for ; Thu, 18 Sep 2014 17:11:29 -0700 (PDT) Message-ID: <541B7490.6080206@linaro.org> Date: Fri, 19 Sep 2014 02:10:56 +0200 From: Eric Auger MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: [Qemu-devel] [question] virtio-net-device and multi-queue option List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu list , "Michael S. Tsirkin" Hi, I am currently doing some benchmarks using virtio-net-device using virtio-mmio (non PCI) with qemu_system_arm with KVM. Purpose is to compare with device passthrough performance. I heard about the availability of a multi-queue option that greatly improves the performance but I currently fail in enabling it. Please could someone explain me how to turn that feature on? My current virtio-net options simply are: -netdev tap,id=tap0,ifname="tap0" \ -device virtio-net-device,netdev=tap0 Also are there any "easy" tunings I can play with to try to reach the best performance. Thank you in advance Best Regards Eric