From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gerard Saraber Subject: Gigabit networking speeds Date: Tue, 18 Sep 2007 13:57:00 -0500 Message-ID: <1190141820.12685.216.camel@ahr2> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Return-path: 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 Hi, we were testing the network throughput with some simple wget tests, grabbing a 112MB file off another machine, the host OS gets 46MB/sec transferring that file, but the guest virtual ones only get 10-14MB/sec, I'm using model=rtl8139 for the nic, and a tap via a bridge, I'm wondering if I'm doing something wrong, is there another nic model I can use to make it faster? or use a different method besides the network tap +bridge thing? I tested two guests pulling the same file at the same time, both got ~10MB/sec, so it seems the host is up to it, but the guests are somehow limited.. I saw some patches for an "IOQ" driver, should I be using a different kernel tree? I'm using kvm-40 and linux 2.6.23-rc6 -- Regards, Gerard Saraber Network Admin, Rarcoa, Inc. (630) 654-2580 x199 gsaraber-/tCmSuwdN3vQT0dZR+AlfA@public.gmane.org ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/