All,
The Bizgres project is working on resource management for PostgreSQL. So far,
however, they have been able to come up with schemes that work for BI/DW at
the expense of OLTP. Becuase of O^N lock checking issues, resource
management for OLTP which doesn't greatly reduce overall performance seems a
near-impossible task.
--
Josh Berkus
PostgreSQL @ Sun
San Francisco