I am seeing this bug on a ubuntu 16.04 box running on proxmox 5.1. Running 4.4.0-72-generic x86_64 guest (linux-image-4.4.0-72-generic).
Under heavy I/O sometimes the guest get stuck for couple of seconds and this error is printed: [538796.529342] hrtimer: interrupt took 37764682 ns After that the guest becames unbearably slow and only reboot helps. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1346917 Title: Using KSM on NUMA capable machines can cause KVM guest performance and stability issues To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1346917/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
