The problems still remains... I've tried to change shmax to 128 mb (i've got 2 GB of ram), then the others parameter are set as follow:
shared_buffers = 8096 # 2*max_connections, min 16 max_fsm_relations = 500 # min 10, fsm is free space map max_fsm_pages = 15000 # min 1000, fsm is free space map max_locks_per_transaction = 64 # min 10 wal_buffers = 8 # min 4 # # Non-shared Memory Sizes # sort_mem = 1024 # min 32 vacuum_mem = 16384 # min 1024 I've scheduled 2 tasks nightly: vacuumdb --analyze dbname pg_dump -x -f dbname.dmp dbname so when the users go home, i've got something like 15/20000kb free ram, the rest is cached and 0kb of swap... It seems that when pg_dump starts the cached memory isn't released so the system begin to swap, then the system does the same with vacuum..... even if there 1.8 gb of cached ram (that is'nt released anymore....) very strange! anyone could explain mw why this happend? Distinti Saluti Sgarbossa Domenico X Tecnica S.R.L. www.xtecnica.com Tel: 049/9409154 - 049/5970297 Fax: 049/9400288 ---------------------------(end of broadcast)--------------------------- TIP 8: explain analyze is your friend
