Thanks to all, at this moment, can't stop the database and put back the old database, but at night i will take more analyzes on old database and reimported and i put here the results.
Thanks a lot Rodrigo -----Mensagem original----- De: Tom Lane [mailto:[EMAIL PROTECTED] Enviada em: sexta-feira, 18 de fevereiro de 2005 12:00 Para: Rodrigo Moreno Cc: firstname.lastname@example.org Assunto: Re: RES: [PERFORM] Degradation of postgres 7.4.5 on FreeBSD/CygWin "Rodrigo Moreno" <[EMAIL PROTECTED]> writes: > max_fsm_pages = 40000 > max_fsm_relations = 2000 > But why after 2 months the database has 1.3gb and after reimport on 900mb ? 40k pages = 320M bytes = 1/3rd of your database. Perhaps you need a larger setting for max_fsm_pages. However, 30% bloat of the database doesn't particularly bother me, especially when you are using infrequent vacuums. Bear in mind that, for example, the steady-state fill factor of a b-tree index is usually estimated at less than 70%. A certain amount of wasted space is not only intended, but essential for reasonable performance. What you need is to take a more detailed look at the behavior of that function that's getting so slow. Are the query plans changing? Is the loop iterating over many more rows than before? You haven't told us anything that would account for 100x slowdown. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 4: Don't 'kill -9' the postmaster