On Wed, Jan 28, 2015, murali reddy <muralimmre...@gmail.com> wrote: > On hosts with multi-core processors, it does not seem optimal to run a > single service instance with just green thread. I understand that on > controller node, we can run one or more nova services but still it does not > seem to utilize multi-core processors. > > Is it not a nova scaling concern?
It certainly depends on the service. nova-compute isn't CPU limited for instance, so utilizing multiple cores isn't necessary. nova-scheduler generally isn't CPU limited either in our usage (at Rackspace), but we use cells and as a result, we run multiple independent nova-scheduler services. If you've seen some scaling problems, I know the Nova team is open to reports. In some cases, patches wouldn't be hard to develop to start multiple processes, but no one has ever reported a need beyond nova-api. JE __________________________________________________________________________ OpenStack Development Mailing List (not for usage questions) Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev