Mladen Gogala <mladen.gogala@xxxxxxxxxxx> writes: > Tom Lane wrote: >> My guess would be overstressed disk subsystem. A COMMIT doesn't require >> much except fsync'ing the commit WAL record down to disk ... > Doesn't the "commit" statement also release all the locks held by the > transaction? Yeah, and there's a nontrivial amount of other cleanup too, but it all amounts to just changes in in-memory data structures. I don't see that taking five seconds, especially not if commits of similar transactions usually take much less than that. regards, tom lane -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance