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Why does beam.smp process have high CPU usage?

asked 2013-05-31 12:55:27 -0600

spcla1 gravatar image

updated 2013-05-31 12:58:51 -0600


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".


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.

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Not good :) Consider reporting this as a bug at to get attention from developers if there's no reply soon.

fifieldt gravatar imagefifieldt ( 2013-06-08 22:39:59 -0600 )edit

1 answer

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answered 2013-07-26 17:27:37 -0600

smaffulli gravatar image

This seems to be a bug. Please report it and add the URL to the bug here in the comments. Thank you.

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Asked: 2013-05-31 12:55:27 -0600

Seen: 12,230 times

Last updated: Jul 26 '13