From mboxrd@z Thu Jan 1 00:00:00 1970 From: Erich Weiler Subject: Disk activity issue... Date: Thu, 30 Dec 2010 15:25:20 -0800 Message-ID: <4D1D14E0.3090706@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit To: kvm@vger.kernel.org Return-path: Received: from mail-pv0-f174.google.com ([74.125.83.174]:55031 "EHLO mail-pv0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751342Ab0L3XZW (ORCPT ); Thu, 30 Dec 2010 18:25:22 -0500 Received: by pva4 with SMTP id 4so2085290pva.19 for ; Thu, 30 Dec 2010 15:25:22 -0800 (PST) Sender: kvm-owner@vger.kernel.org List-ID: I've got this issue that I've been banging my head against a wall for a while over and I think another pair of eyes may help, if anyone have a moment. We have this new-ish KVM VM server (with the latest CentOS 5.5 updates, kmod-kvm-83-164.el5_5.25) that houses 3 VMs. It works mostly as expected except it has a very high load all the time, like 40-60, when the VMs are running. I suspect it has to do with memory management, because when all 3 VMs are online, they should consume 5GB RAM on the VM server and they only consume like 2GB, so I think the rest of the RAM is swapping or something, because the disks are spinning at 100% all the time (even when the VMs are doing nothing). Although, the VM server does not report any swapping happening. When I shut down the VMs one by one, the load drops and so does the disk activity. I don't think I set this server up with anything out of the ordinary... I've tried rebooting, but the same thing happens immediately upon reboot. Google searches, for me at least, yielded nothing useful. Anyone heard of this kind of thing happening? -erich