On Mon, Feb 27, 2012 at 04:19:10AM -0800, Chris Travers wrote: > > Strangely, he doesn't consider PostgreSQL to be an elephant. The last presentation I saw from Volt guys explicitly mentioned Postgres as one of the elephants. Also, if you read their literature carefully, you discover that the reason there's no locking overhead is because there's no lock; basically, if you're joining a lot, you're thrown back on old-fashioned locks of some sort. They also don't permit in-transaction round trips to the application, so that source of lock contention is also gone. A -- Andrew Sullivan ajs@xxxxxxxxxxxxxxx -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general