On 07/30/2011 06:37 AM, Pasi Kärkkäinen wrote: > On Fri, Jul 29, 2011 at 08:07:38PM +0200, Dennis Jacobfeuerborn wrote: >> Hi, >> I'm trying to use oprofile to debug a problem with idle virtual machines >> eating 10% cpu but apparently the debuginfo packages for Centos 6 do not >> exist and so I cannot get any useful information from the kernel. >> Is there some way to at least get the kernel-debuginfo from somewhere? >> > > If those VMs are el5 then try adding "divider=10" for their kernels. It's a Centos6 "minimal" guest on a Centos 6 "Desktop" host so technically this shouldn't be needed but I tried it anyway without effect. I also removed the NIC and tried playing with the APIC/ACPI settings but this doesn't seem to matter either. I filed a bug here: http://bugs.centos.org/view.php?id=5028 According to toracat he sees this also on RHEL6 and SL6 which has me worried because if this is really a Problem upstream that hasn't been addressed yet then I'm not sure how I can justify using Centos 6 as a virtualization platform. 10% of wasted resources per VM is simply not acceptable when you run more than one guest on a system. Regards, Dennis