Why does beam.smp process have high CPU usage?
Configuration:
Ubuntu 12.04
Openstack Grizzly
Openstack Networking with OVS plugin
Everything seems to be working ok. I can launch and connect to the instance but I notice that the more I have instances running, the more the "nova" command and the dashboard responses becoming very slow. One thing I noticed was the beam.smp CPU usage is most of the time 100% and I have seen it went up to 500%. I think this is contributing to the performance I am seeing.
I installed the management plugin to check the status of rabbitmq-server and everything seems to be normal. Resources available are way more than the current usage.
Here's the output of the "rabbitmqctl report | grep A3 file_descriptors".
{file_descriptors,
[{total_limit,9900},
{total_used,259},
{sockets_limit,8908},
{sockets_used,257},
I was running the rabbitmq version that came with Ubuntu 12.04 and I upgraded it to ver 3.1.1-1 to test if that would help solve the problem, but same bproblem. Does anyone have seen this behavior? Thanks for any help that you can provide.
Not good :) Consider reporting this as a bug at https://bugs.launchpad.net/nova to get attention from developers if there's no reply soon.