I tested with qemu-kvm 1.3.0. It seems that the issue still exists, but that it exists without a live migration if you wait long enough.
That is if you start a VM on one node and run phoronix batch-run pts/compilation, wait 4 hours (with the VM and physical host doing nothing else) an re-run the test you'll get results on the VM similar to if you run the test and then live migrate to a new host. I have no idea what's causing this behavior, but it seems to be reproducible. For now this can probably be closed. I'll resubmit a new bug (possibly upsteam) if I can figure out how to get more details to help properly diagnose how/when/why the VM's slow down over time. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu-kvm in Ubuntu. https://bugs.launchpad.net/bugs/1100843 Title: Live Migration Causes Performance Issues To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/1100843/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
