On Tue, Nov 09, 2010 at 12:36:16PM +0900, Masao Uebayashi wrote: > The root cause of such a problem is, we don't do I/O scheduling at all. > > I think that pool(9) (and pool_cache(9)) is a great tool to manage > limited resources. The way to go would be to extend it to manage > bandwidth in I/O subsystems. (We already use pool_cache(9) for > KVA.) > > Resources are shared, and have dependencies. I/O resources would > look like some hierachical structure chained with pool backend > callbacks. Probably combined with device tree too.
FWIW, I'm working on managing PCI I/O resources in this way, but I'm probably going to use vmem(9), not pool(9). Dave -- David Young OJC Technologies dyo...@ojctech.com Urbana, IL * (217) 278-3933
