On Thu, Jun 25, 2009 at 4:39 PM, Kevin Kempter<kevink@xxxxxxxxxxxxxxxxxxx> wrote: > > we're inserting an average of 70-100 rows per second into these tables. Hm. And every row is a separate transaction? That's still only a few hundred rows per second. About 25 million per day. You should have about 4 days before it hits autovacuum_freeze_max_age-vacuum_freeze_min_age. Are you using subtransactions heavily (savepoints in sql or exception clauses in plpgsql)? That could add a multiplier or two to the number of transaction ids used up. You can raise autovacuum_freeze_max_age to, say, 800 million to get four times longer before the autovacuum kicks in. You can also lower vacuum_freeze_min_age to maybe 25 million. That will give you about 775 million transaction ids, almost 8x what you have now, which will hopefully give you about a week before autovacuum tries to freeze the table -- greg http://mit.edu/~gsstark/resume.pdf -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin
