you can see that at the end of vacuum log (sorry for my english) ... INFO: free space map: 930 relations, 48827 pages stored; 60240 total pages needed -- NEEDED! -- I have already configured in postgresql.conf, you can see it below DETAIL: Allocated FSM size: 1000 relations + 70000 pages = 475 kB shared memory. -- ALLOCATED ACCORDING TO max_fsm_pages , etc VACUUM
You probably must adjust your shared memory, coz the database need it, but it depends on your database... (I could be wrong, I'm learning postgresql, please, feel free to correct me) -----Mensaje original----- De: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] nombre de Stef Enviado el: viernes, 23 de septiembre de 2005 14:18 Para: Bruno Wolff III CC: Markus Benne; pgsql-performance@postgresql.org Asunto: Re: [PERFORM] VACUUM FULL vs CLUSTER Bruno Wolff III mentioned : => > => If you have a proper FSM setting you shouldn't need to do vacuum fulls => > => (unless you have an older version of postgres where index bloat might => > => be an issue). Thanks Alvaro and Bruno I just want to clarify something that I also couldn't find a clear cut answer for before. What is a proper fsm setting? Someone told me to set max_fsm_relations to the number of relations in pg_class plus a few more to allow for new relations. And max_fsm_pages to the number of rows in the biggest table I want to vacuum, plus a few 1000's for extra room? Where does this free space map sit? On the disk somewhere, or in memory, or both. I once set the max_fsm_pages very high by mistake, and postgres then started up and used a _lot_ of shared memory, and I had to increase shmmax. Is there abything to watch out for when bumping this setting up a lot? Kind Regards Stefan ---------------------------(end of broadcast)--------------------------- TIP 5: don't forget to increase your free space map settings ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
