From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:41402) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z1xc3-0007jJ-7V for qemu-devel@nongnu.org; Mon, 08 Jun 2015 10:01:15 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Z1xc0-0002Xv-CV for qemu-devel@nongnu.org; Mon, 08 Jun 2015 10:01:15 -0400 Received: from mx1.redhat.com ([209.132.183.28]:52334) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z1xbz-0002W5-Qn for qemu-devel@nongnu.org; Mon, 08 Jun 2015 10:01:12 -0400 Message-ID: <5575A023.7010808@redhat.com> Date: Mon, 08 Jun 2015 16:01:07 +0200 From: Paolo Bonzini MIME-Version: 1.0 References: <1b79c169d7e76e0ae1dfe3f79b8f9cfe@alukardd.org> <55759CA8.4070909@redhat.com> In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] poor virtio-scsi performance List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Vasiliy Tolstov Cc: Andrey Korolyov , Alexey , "qemu-devel@nongnu.org" On 08/06/2015 16:00, Vasiliy Tolstov wrote: > 2015-06-08 16:46 GMT+03:00 Paolo Bonzini : >> > virtio-scsi dataplane is not yet 100% thread-safe, but in practice it >> > should work in 2.3+. It's definitely good enough for benchmarking. > > Minimal qemu version is 2.3 or something from git? 2.3 > Also how can i enable dataplane ? Replace "-device virtio-scsi-pci" with "-object iothread,id=io1 -device virtio-scsi-pci,iothread=io1". Paolo