Here is a updated patch to add query modes into pgbench in order to measure performance of simple protocol, extended protocol and prepared statements with it.
[PATCHES] Patch for testing query modes on pgbench http://momjian.us/mhonarc/patches/msg00335.html A new runtime option (-M) is added: -M querymode Choose the query mode from the follows. default is simple. - simple: using simple query protocol. - extended: using extended protocol. - prepared: using extended protocol with prepared statements. ---- Extended protocol is slower than simple protocol. I think it is a problem because we have to use the protocol (and cannot use prepared statements) in some situations, such as connectiong with JDBC to partitioned tables. $ pgbench -S -n -c5 -t10000 -M simple tps = 3567.351598 (excluding connections establishing) $ pgbench -S -n -c5 -t10000 -M extended tps = 2877.697842 (excluding connections establishing) $ pgbench -S -n -c5 -t10000 -M prepared tps = 4532.680627 (excluding connections establishing) Regards, --- ITAGAKI Takahiro NTT Open Source Software Center
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