Disable the openstack-slothd collector; fix #6.
For whatever reason, this seems to be the trigger for issue #6 . We certainly are running with a ton of VMs, so the Ceilometer history that the collector grabs for Cloudlab is very detailed... it would not surprise me if the collector runs around the clock in these experiments. I no longer think this is really our problem... but I'll leave that bug open in case I ever have time to investigate. But this certainly explains the nondeterministic locks I was seeing in Neutron.
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