Hi After upgrading DBI and DBD::Pg, this benchmark still picks MySQL as the winner (at least on Linux RH3 on a Dell 1875 server with 2 hyperthreaded 3.6GHz CPUs and 4GB RAM). I've applied the following parameters to postgres.conf: max_connections = 500 shared_buffers = 3000 work_mem = 100000 effective_cache_size = 3000000000 Most queries still perform slower than with MySQL. Is there anything else that can be tweaked or is this a limitation of PG or the benchmark? Thanks. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com