2014-03-20 7:32 GMT+09:00 The Doctor <doctor@xxxxxxxxxxxxxxxxx>: > Help! > > > Everytime I run 8.1 my server average load mostly below 10. > Everytime I run 9.3 my server average load is about 30. > <snip> > > > Any clue to the runaway performance? What kind of environment is your installation running on (OS, memory etc.?) In particular your memory settings seem to be on the low side: shared_buffers = 1024 work_mem = 64 maintenance_work_mem = 1024 temp_buffers = 100 Unqualified values default to units of 8kB; it's generally easier to qualify them explicitly: shared_buffers = 8MB work_mem = 512kB maintenance_work_mem = 8MB temp_buffers = 800kB You very probably will be able to improve performance by increasing some or all of these values, but it's hard to say by how much without knowing more about your environment. Also I see that in your 8.1 configuration, "max_connections" is 20, but in 9.1 it's 5. Regards Ian Barwick -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin