From mboxrd@z Thu Jan 1 00:00:00 1970 From: Asias He Subject: Re: native kvm tool hrtimer problem Date: Sun, 11 Mar 2012 09:39:49 +0800 Message-ID: <4F5C0265.20301@gmail.com> References: <20120308151353.GD21812@moon> <20120308155109.GE21812@moon> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: Pekka Enberg , kvm@vger.kernel.org, Sasha Levin , Ingo Molnar To: Cyrill Gorcunov , Daniele Carollo Return-path: Received: from mail-iy0-f174.google.com ([209.85.210.174]:58244 "EHLO mail-iy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751960Ab2CKBlU (ORCPT ); Sat, 10 Mar 2012 20:41:20 -0500 Received: by iagz16 with SMTP id z16so4602418iag.19 for ; Sat, 10 Mar 2012 17:41:20 -0800 (PST) In-Reply-To: <20120308155109.GE21812@moon> Sender: kvm-owner@vger.kernel.org List-ID: On 03/08/2012 11:51 PM, Cyrill Gorcunov wrote: > On Thu, Mar 08, 2012 at 04:31:17PM +0100, Daniele Carollo wrote: >>>> I don't really use the tap interface so lets CC Asias. Which guest >>>> kernel are you using, btw? >>>> >>> >>> Yup, Asias was using it, if my memory doesn't betray me. Also both -- host >>> and guest kernel versions might be useful to know. iirc we were emulating >>> rtc only while anything else passes through to kvm kernel driver. >>> >>> Cyrill >> >> As guest I'm using debian 6.0 squeeze found here >> http://people.debian.org/~aurel32/qemu/i386/debian_squeeze_i386_standard.qcow2 >> while on the host I'm using Opensuse 11.2 with kernel 3.3.0-rc1KVM >> gitted from here http://git.kernel.org/pub/scm/virt/kvm/kvm.git >> > > OK, lets see what Asias say. Hi, Daniele The guest should be fine, I use that image as well. Can you post the command line which you started the kvm tool? Is tap/virtio or vhost/virtio working before the iperf stress testing, like ping guestA in guesgB? Can you try it on host with stock kernel from your distro? -- Asias He