On 8/28/08, Phoenix Kiula <phoenix.kiula@xxxxxxxxx> wrote: > I hope someone can urgently help. I was running 8.2.3 with a lot of > pleasure and no-nonsense. Very fast and delightful database that had > me singing paeans. > > But I upgraded to 8.2.9 this morning and have had a major slowdown of > the DB processes. How do I begin to test what is going wrong? > > I checked the log files and there are "LOG: duration: 84533.845 ms > statement: " type errors messages for the simplest of queries that > call the indexes into question. > > Nothing has ben changed on the db or in the conf files other than just > the RPM upgrade! > > The SELECTs are taking about 85 seconds and the main INSERT to a table > (no binary blob or anything, just usual data!) is taking about 145 > seconds sometimes. > > How can I begin to diagnose what is wrong? Has there been a major > change to some CONF variables between versions 8.2.3 and 8.2.9 that I > should look at? > > Thanks for any pointers or direction! > To add to that, some information. CentOS 4.4 Linux Postgresql 8.2.9 (now) 6GB RAM Dual Core 2 Duo CPU SATA disks RAID 1 These are my postgres.conf settings: max_connections = 300 shared_buffers = 330MB effective_cache_size = 512000 max_fsm_relations = 100 max_fsm_pages = 300000 work_mem = 20MB temp_buffers = 4096 authentication_timeout = 10s ssl = off checkpoint_warning = 3600 random_page_cost = 2 autovacuum = on autovacuum_vacuum_cost_delay = 20 vacuum_cost_delay = 20 autovacuum_naptime = 10 stats_start_collector = on stats_row_level = on autovacuum_vacuum_threshold = 75 autovacuum_analyze_threshold = 25 autovacuum_analyze_scale_factor = 0.02 autovacuum_vacuum_scale_factor = 0.01
