At y! we have been working in integrating zipkin into openstack to get a 'live' tracing mechanism hooked into the various openstack components.
This session would be talking about how we did this and what the benefits are and how it can be expanded in the future to provide more in depth tracing with more context, something sorely lacking in openstack.
We'd like to share this code with others and let others see the potential of such a system and also be able to use it for themselves...