> resource management policies implemented. By default, > ZFS will queue > 35 I/Os to each leaf vdev, so it is not clear that > scheduling above the ZFS > level will be as effective
It doesnt have to be above the _ZFS_ layer no? In place of a single queue one could maintain separate queues that are either timesliced between or FSSed (some form of ticket scheduling where ticket = priority * age) You could still have elevator + deadline and therefore not hurt disk bandwidth. -- This message posted from opensolaris.org
