Greg Smith <greg@xxxxxxxxxxxxxxx> writes: > André Volpato wrote: >> I disabled effective_io_concurrency at AIX but it made no changes on bitmap index times. > Brad's point is that it probably doesn't do anything at all on AIX, and > is already disabled accordingly. AFAICT from googling, AIX does have posix_fadvise, though maybe it doesn't do anything useful ... regards, tom lane -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance