You have been subscribed to a public bug: Context: openstack juju/maas deploy using 1510 charms release on trusty, with: openstack-origin: "cloud:trusty-liberty" source: "cloud:trusty-updates/liberty
* Several openstack nova- and neutron- services, at least: nova-compute, neutron-server, nova-conductor, neutron-openvswitch-agent,neutron-vpn-agent show almost busy looping on epoll_wait() calls, with zero timeout set most frequently. - nova-compute (chose it b/cos single proc'd) strace and ltrace captures: http://paste.ubuntu.com/13371248/ (ltrace, strace) As comparison, this is how it looks on a kilo deploy: - http://paste.ubuntu.com/13371635/ * 'top' sample from a nova-cloud-controller unit from this completely idle stack: http://paste.ubuntu.com/13371809/ FYI *not* seeing this behavior on keystone, glance, cinder, ceilometer-api. As this issue is present on several components, it likely comes from common libraries (oslo concurrency?), fyi filed the bug to nova itself as a starting point for debugging. Note: The description in the following bug gives a good overview of the issue and points to a possible fix for oslo.messaging: https://bugs.launchpad.net/mos/+bug/1380220 ** Affects: cloud-archive Importance: Undecided Status: Fix Committed ** Affects: cloud-archive/kilo Importance: Undecided Status: Fix Committed ** Affects: cloud-archive/liberty Importance: Undecided Status: Fix Committed ** Affects: cloud-archive/mitaka Importance: Undecided Status: Fix Committed ** Affects: cloud-archive/newton Importance: Undecided Status: Fix Committed ** Affects: ubuntu-translations Importance: Undecided Status: Invalid ** Affects: oslo.messaging Importance: Undecided Assignee: John Eckersberg (jeckersb) Status: Fix Released ** Affects: nova (Ubuntu) Importance: Undecided Status: Invalid ** Affects: python-oslo.messaging (Ubuntu) Importance: Undecided Status: Fix Released ** Affects: python-oslo.messaging (Ubuntu Xenial) Importance: Undecided Status: New ** Affects: python-oslo.messaging (Ubuntu Yakkety) Importance: Undecided Status: New ** Affects: python-oslo.messaging (Ubuntu Zesty) Importance: Undecided Status: Fix Released ** Tags: canonical-bootstack verification-liberty-needed -- liberty: ~busy loop on epoll_wait being called with zero timeout https://bugs.launchpad.net/bugs/1518430 You received this bug notification because you are a member of Ubuntu Translations Coordinators, which is subscribed to Ubuntu Translations. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-translations-coordinators Post to : ubuntu-translations-coordinators@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-translations-coordinators More help : https://help.launchpad.net/ListHelp