On Fri, Sep 05, 2008 at 09:16:41AM -0400, Aaron Burnett wrote: > For an upcoming release there is a 16 million row insert that on our test > cluster takes about 2.5 hours to complete with all indices dropped > beforehand. > > If I turn off fsync, it completes in under 10 minutes. Have you tried bundling all the INSERT statements into a single transaction? If you haven't then PG will run each statement in its own transaction and then commit each INSERT statement to disk separately, incurring large overheads. Sam
