I'm exhausted to try all performance tuning ideas, like following parameters shared_buffers fsync max_fsm_pages max_connections shared_buffers work_mem max_fsm_pages effective_cache_size random_page_cost I believe all above have right size and values, but I just can not get higher tps more than 300 testd by pgbench Here is our hardware Dual Intel Xeon 2.8GHz 6GB RAM Linux 2.4 kernel RedHat Enterprise Linux AS 3 200GB for PGDATA on 3Par, ext3 50GB for WAL on 3Par, ext3 With PostgreSql 8.1.4 We don't have i/o bottle neck. Whatelse I can try to better tps? Someone told me I can should get tps over 1500, it is hard to believe. Thanks Marty
