From mboxrd@z Thu Jan 1 00:00:00 1970 From: "jmandawg" Subject: RE: XP guests sluggish after around 1 week of uptime Date: Sun, 18 Jan 2009 23:03:08 -0500 Message-ID: References: <496B4757.1090207@redhat.com> <496C5EDD.9000901@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: To: "'Avi Kivity'" Return-path: Received: from bay0-omc2-s29.bay0.hotmail.com ([65.54.246.165]:52863 "EHLO bay0-omc2-s29.bay0.hotmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751102AbZASEDL (ORCPT ); Sun, 18 Jan 2009 23:03:11 -0500 In-Reply-To: <496C5EDD.9000901@redhat.com> Message-ID: <000601c979ea$d67f60b0$837e2210$@com> Content-Language: en-us Sender: kvm-owner@vger.kernel.org List-ID: It's definitely some kind of Disk IO problem, I can't even copy a 700MB file on that guest without waiting a loooong time. Running bonnie on my linux guest shows considerable slow down in disk performance. Results after a fresh Reboot of the Host: root@wserver:~# cat bonnieresults.txt Version 1.03b ------Sequential Output------ --Sequential Input- --Random- -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP wserver 1G 10617 23 12241 1 10328 2 47915 93 301061 93 5095 98 ------Sequential Create------ --------Random Create-------- -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++ wserver,1G,10617,23,12241,1,10328,2,47915,93,301061,93,5094.8,98,16,+++++,++ +, +++++,+++,+++++,+++,+++++,+++,+++++,+++,+++++,+++ Results after noticing considerable slow down on other guest machine: root@wserver:~# cat bonnieresults_SLOW.txt Version 1.03b ------Sequential Output------ --Sequential Input- --Random- -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP wserver 1G 2252 3 3771 0 6844 1 46057 70 355858 50 752.3 7 ------Sequential Create------ --------Random Create-------- -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++ wserver,1G,2252,3,3771,0,6844,1,46057,70,355858,50,752.3,7,16,+++++,+++,++++ +, +++,+++++,+++,+++++,+++,+++++,+++,+++++,+++ After a reboot of the host, they guest are fine again, but for how long... Any advice or suggestions? Thanks, -J -----Original Message----- From: Avi Kivity [mailto:avi@redhat.com] Sent: Tuesday, January 13, 2009 4:29 AM To: Jay Cc: kvm@vger.kernel.org Subject: Re: XP guests sluggish after around 1 week of uptime Please keep the cc list when replying (use reply-all). Jay wrote: > Avi Kivity redhat.com> writes: > > >> How much memory do you have on the host? Is the host swapping? Can you >> post 'vmstat 1' output while Windows is opening the start menu? >> >> > > I have 8GB RAM on the host, and i've run htop and the swap space is not being > used at all. I have a total of 4 guest (2 windows + 2 linux) > > I will have to try the 'vmstat 1' command tonight when i get home from work. Provide kvm_stat output as well. -- error compiling committee.c: too many arguments to function