From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: strange guest slowness after some time Date: Tue, 26 May 2009 17:35:55 +0300 Message-ID: <4A1BFE4B.7040300@redhat.com> References: <49B29705.6000904@wpkg.org> <49D30801.5020201@wpkg.org> <49DA1D75.6000604@wpkg.org> <200904081019.14768.rusty@rustcorp.com.au> <4A1BD765.4080405@wpkg.org> <4A1BD8A7.9090404@redhat.com> <4A1BDB10.2030603@wpkg.org> <4A1BDC1F.5050708@redhat.com> <4A1BF7B0.70107@wpkg.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: Rusty Russell , "David S. Ahern" , Felix Leimbach , kvm@vger.kernel.org, Anthony Liguori To: Tomasz Chmielewski Return-path: Received: from mx2.redhat.com ([66.187.237.31]:49512 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752402AbZEZOgE (ORCPT ); Tue, 26 May 2009 10:36:04 -0400 In-Reply-To: <4A1BF7B0.70107@wpkg.org> Sender: kvm-owner@vger.kernel.org List-ID: Tomasz Chmielewski wrote: >> Maybe virtio is racy and a loaded host exposes the race. > > I see it happening with virtio on 2.6.29.x guests as well. > > So, what would you do if you saw it on your systems as well? ;) > > Add some debug routines into virtio_* modules? > I'm no virtio expert. Maybe I'd insert tracepoints to record interrupts and kicks. -- error compiling committee.c: too many arguments to function