Hello, I am trying to understand how a nova component can be run parallely on a host. From the developer reference documentation it seems to indicate that all the openstack services use green thread model of threading. Is it the only model of parallelism for all the components or multiple processes can be used for a nova service on a host. Does nova.service which seems to do os.fork is being used to fork multiple processes for a nova service? I am newbie so pardon me if the question is asked before. Thanks Murali -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-dev/attachments/20150128/5c14b900/attachment.html>