Thanks for the thought but it (-C) does not work .
BTW, I think you should use -C option with pgbench for this kind of testing. -C establishes connection for each transaction, which is pretty much similar to the real world application which do not use connection pooling. You will be supprised how PostgreSQL connection overhead is large. -- Tatsuo Ishii SRA OSS, Inc. Japan English: http://www.sraoss.co.jp/index_en.php Japanese: http://www.sraoss.co.jp