Brad Nicholson <bnichols@xxxxxxxxxxxxxxx> writes: > Running PG8.1 - will it recognize CPU and memory that are added > dynamically to the server when the postmaster is running? Depends somewhat on the OS. If it allows existing processes to be scheduled on newly added CPUs, then existing backends will be able to run on them. Newly added memory will be available for private (per-backend) allocations and (I assume) disk caching by the OS, but not for addition to the Postgres shared memory pool (since that is all allocated when the server starts up). In general, if the OS makes newly added resources available to existing processes, PG should be able to use them. -Doug