"Chris Hoover" <revoohc@xxxxxxxxx> writes: > Question, if I turn on autovacuum in PG 8.1, how do I turn it off? > The reason behind this question is that we would love to turn it on and try > it in our production systems. However, if we find that it is causing to > much i/o load, we need to be able to turn it off on a moments notice with > out stopping the database. Not a problem, you can change the autovacuum parameters with just a SIGHUP to the postmaster, no need to restart anything. If you really mean you want to kill it NOW, rather than letting the current autovac pass finish out, I think a SIGINT to the autovac process will take care of it. regards, tom lane