From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: strange guest slowness after some time Date: Tue, 17 Mar 2009 17:52:35 +0200 Message-ID: <49BFC743.20000@redhat.com> References: <49B29705.6000904@wpkg.org> <49B4E7A6.3090601@redhat.com> <49B4EDC9.9020504@wpkg.org> <49B4EE8F.7050001@redhat.com> <49BD007C.9030809@wpkg.org> <49BF7FB6.9080503@wpkg.org> <49BF8686.5050707@redhat.com> <49BF88BE.7040805@wpkg.org> <49BFC276.1080600@gmx.net> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: Tomasz Chmielewski , kvm@vger.kernel.org To: Felix Leimbach Return-path: Received: from mx1.redhat.com ([66.187.233.31]:49360 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753032AbZCQPwk (ORCPT ); Tue, 17 Mar 2009 11:52:40 -0400 In-Reply-To: <49BFC276.1080600@gmx.net> Sender: kvm-owner@vger.kernel.org List-ID: Felix Leimbach wrote: > I see similar behavior: After a week one of my guests' network totally > stops to respond. Only guests using virtio networking get hit. Both > windows and linux guests are affected. > My guests in production use e1000 and have never been hit. > While that can be a coincidence it seems very unlikely: Out of 3 > virtio guests 2 have been hit, one repeatedly. > Out of 3 e1000 guests none has ever been hit. > > Observed with kvm-83 and kvm-84 with the host running in-kernel KVM > code (linux 2.6.25.7) Might it be that some counter overflowed? What are the packet counts on long running guests? (output of ifconfig, even on an unaffected e1000 guest, might help) -- error compiling committee.c: too many arguments to function