At the Folsom Summit someone (and I am totally blanking on who, sorry), did a really great lightning talk on a scheduler tester that would run through a simulated scheduling process and pack a set of simulated hosts, ensuring that scheduling didn't over commit, or happen in an unexpected way. Is that code available as something that could be integrated into nova unit tests? It would be a nice basis for being able to confirm scheduler behavior, especially for some of the reported scheduler bugs like this one - https://bugs.launchpad.net/nova/+bug/1023827 -Sean -- Sean Dague IBM Linux Technology Center email: sdague at linux.vnet.ibm.com alt-email: sldague at us.ibm.com