Same thing happened with us with running ubuntu precise kvm for our hypervisors. VMs that are live-migrated suffer noticeable performance degradation. We tried a few performance tests against live-migrated vs non-migrated VMs and the problem is easily reproducible.. (we used jmeter)
Ubuntu (hypervisor): 12.04.1 LTS libvirt:0.9.8-2ubuntu17.4 qemu-kvm:1.0+noroms-0ubuntu14.3 storage: NFS exports. Guest OS: Ubuntu 12.04.1 & RHEL 5.5 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to 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-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs