Using henrix's -proposed kernel appears to resolve the issue for me. Under 3.13.0-32-generic #56-Ubuntu, Kworker is no longer running away, whereas before under *.30-generic #55 it was.
My setup is a server with a nfs client on a KVM VM coming in over openvswitch. Restarting the NFS client VM seemed to hang the NFS daemon on the server, and Kworker was running away. I replicated that same scenario, and everything appears to be working correctly now. The only difference was that there was a significant amount of NFS activity that I didn't recreate, but as I said, everything appears normal now. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1322407 Title: NFS kernel server creates a kworker with 100% CPU usage, then hangs randomly To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1322407/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
