From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: [announce] KVM/NET, paravirtual network device Date: Thu, 11 Jan 2007 10:21:22 +0200 Message-ID: <45A5F382.7050207@qumranet.com> References: <20070111001010.GA28779@elte.hu> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel Return-path: To: Ingo Molnar In-Reply-To: <20070111001010.GA28779-X9Un+BFzKDI@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: kvm.vger.kernel.org Ingo Molnar wrote: > here's a quick update wrt. the KVM paravirtualization work: i'm > currently working on KVM/NET, which is a Linux<->Linux virtual network > device driver between the KVM host and the KVM guest. It uses the new > KVM-paravirtualization infrastructure that i've sent to this list > yesterday. > > while the code is still a prototype, it's working already and here are > some early TCP bandwidth (bw_tcp from guest to host) performance results > which i'm sure you'll enjoy: > > ----------------------------------------------------------- > | Native via loopback (mtu=1500) : 235.57 MB/sec | > | Native via loopback (mtu=4000) : 487.12 MB/sec | > ----------------------------------------------------------- > | Qemu via RTL-8029 emulation : 2.84 MB/sec | > | KVM via RTL-8029 emulation : 7.41 MB/sec | > ----------------------------------------------------------- > | KVM-para via KVM/NET device (mtu=1500) : 303.35 MB/sec | > | KVM-para via KVM/NET device (mtu=4000) : 389.47 MB/sec | > ----------------------------------------------------------- > > That's about a 5000% improvement :) Amazing, both the bandwidth results and the speed in which it was reached. I'm really at a loss for words. -- error compiling committee.c: too many arguments to function ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV