From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: strange guest slowness after some time Date: Sun, 31 May 2009 11:43:40 +0300 Message-ID: <4A22433C.1080205@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> <4A1BFE4B.7040300@redhat.com> <4A1EA6B2.4020002@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 , Marcelo Tosatti To: Tomasz Chmielewski Return-path: Received: from mx2.redhat.com ([66.187.237.31]:38932 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751626AbZEaIns (ORCPT ); Sun, 31 May 2009 04:43:48 -0400 In-Reply-To: <4A1EA6B2.4020002@wpkg.org> Sender: kvm-owner@vger.kernel.org List-ID: Tomasz Chmielewski wrote: > Accidentally, I made some "interesting" discovery. > > This ~2 MB video shows a kvm-86 guest being rebooted and GRUB started: > > http://syneticon.net/kvm/kvm-slowness.ogg > > > GRUB has its timeout set to 50 seconds, and is supposed to show it on > the screen by decreasing the number of seconds shown, every second. > > Here, GRUB decreases the second counter very fast by 2 seconds, then > waits 2 seconds, then again decreases the number of sends by 2 seconds > very fast, and so on. > > Perhaps my wording does not describe it very well though, so just try > to download the video and open it i.e. in mplayer. Wierd, wierd. Can you run kvmtrace on this guest while this is happening and post the results somewhere? -- error compiling committee.c: too many arguments to function