Following up on intermittent issues with efficiency, with multiple causes.  One is pods using more storage than they are allocated.  We are looking into allowing pods to temporarily exceed this limit, since most pods don't come close to it and nodes generally run with at least 60% free storage.  If this doesn't work, we may have to increase the amount of storage per core in CRIC and see if the efficiency improvement outweighs the loss of slots.  Spikes of backoff errors may also be due to issues with diskIO overload, we are looking into this as well.

Kuantifier is now running on the cluster.  We lost some slots while it was being implemented because machines were being used for development and troubleshooting.