On Fri, Sep 9, 2011 at 11:55 AM, Antonio Rodriges <antonio.rrz@xxxxxxxxx> wrote: > Hello, > > Does anyone know whether PostgreSQL uses DMA (Direct Memory Access) in > certain cases to improve networking IO performance? > > I mean "simple" query is which doesn't require any CPU processing, for ex > SELECT column_a FROM table_b WHERE date = "2001-10-05" > > I need this to devise the best logic for the system with PostgreSQL as > a layer. Certainly I could study PostgreSQL sources or test it with a > simple application but I hope PostgreSQL experts are aware of this > feature. That's all up to your hardware and OS, not postgresql -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
