From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tomasz Chmielewski Subject: Re: strange guest slowness after some time Date: Thu, 19 Mar 2009 09:03:36 +0100 Message-ID: <49C1FC58.6050109@wpkg.org> References: <49B29705.6000904@wpkg.org> <49BFF8D2.5080000@wpkg.org> <49C094D0.2070905@redhat.com> <200903191529.15081.rusty@rustcorp.com.au> <49C1D6A2.4070604@cisco.com> <49C1E17A.1090102@cisco.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: Rusty Russell , Avi Kivity , Felix Leimbach , kvm@vger.kernel.org, Anthony Liguori To: "David S. Ahern" Return-path: Received: from mx03.syneticon.net ([78.111.66.105]:50723 "EHLO mx03.syneticon.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751633AbZCSIDm (ORCPT ); Thu, 19 Mar 2009 04:03:42 -0400 In-Reply-To: <49C1E17A.1090102@cisco.com> Sender: kvm-owner@vger.kernel.org List-ID: David S. Ahern schrieb: > > David S. Ahern wrote: >> Rusty Russell wrote: >>> On Wednesday 18 March 2009 16:59:36 Avi Kivity wrote: >>>> Tomasz Chmielewski wrote: >>>>> virtio_net virtio0: id 64 is not a head! >>> This means that qemu said "I've finished with buffer 64" and the guest didn't >>> know anything about buffer 64. >>> >>> We should not lock up, tho networking is toast: I think that qemu got upset >>> and that caused this as well as it to chew 100% cpu. >>> >>> I'll see if I can reproduce with kvm-84 userspace and 2.6.27 guests, 32-bit >>> guests on a 64-bit AMD host. What's your kvm/qemu command line? >>> >> I've hit this as well. >> >> Intel host, running RHEL5.3, x86_64 with KVM-81. >> >> Guest is RHEL4.7, 32-bit, with the virtio drivers from RHEL4.8 beta. >> >> Happens pretty darn quickly for me. >> >> david >> > > Like I said, pretty darn quickly. Can you reproduce it also with e1000 instead of virtio? -- Tomasz Chmielewski http://wpkg.org