Look at developer faq. 2011/9/9, Antonio Rodriges <antonio.rrz@xxxxxxxxx>: > 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. > > Thank you. > > -- > Kind regards, > Antonio Rodriges > > -- > Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-performance > -- ------------ pasman -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
