We've resolved our issues by disabling KSM on the affected nodes. All of the non-affected nodes didn't have KSM enabled (due to a packaging bug elsewhere). After disabling KSM, our problems went away gradually in ~3 days.
This means we're no longer affected by this issue (and given the other reports, probably never were). -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu in Ubuntu. https://bugs.launchpad.net/bugs/1307473 Title: guest hang due to missing clock interrupt To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1307473/+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