Here is a patch for testing query modes on pgbench. It is discussed on http://archives.postgresql.org/pgsql-hackers/2007-10/msg00755.php
I think this is useful to measure performance of protocols and prepared statements. I hope the extended protocol will be improved as fast as the simple protocol. It is 10-20% slower now. (for 8.4 item) The querymode option is added: -M querymode Choose the query mode from the follows: simple: using simple query protocol. extended: using extended protocol. prepared: using extended protocol with prepared statements. default is simple. Usage: $ pgbench -M [simple|extended|prepared] Regards, --- ITAGAKI Takahiro NTT Open Source Software Center
pgbench_querymode.patch
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