On Sat, May 23, 2009 at 03:43:12PM -0400, Gerry Reno wrote: > I upgraded the host from F10 to F11 (x86_64) with no issues. Now when I > start a F10 (i386) guest it runs very very slow. I also see messages on > the guest boot console about "clocksource tsc unstable" and some kernel > oops. Once it got far enough to start network I logged in and checked > the clocksource and it currently is 'acpi_pm' even though the kernel > line says clocksource=pit. The available clocksources are acpi_pm, > jiffies, and tsc. I do not see 'pit' in the list. How do I fix this issue? If the guest runs 'extrememly' slowly then the most like thing is that it has fallen back to using QEMU emulation, instead of KVM hardware acceleration. Check the /var/log/libvirt/qemu/$GUEST.log to see if there is any mesage about not being able to open /dev/kvm. Also make sure that KVM modules are loaded, and that 'virsh capabilities' lists KVM as a valid domain. Daniel -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :| -- Libvir-list mailing list Libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list