Excerpts from Bruce Momjian's message of dom ago 22 12:51:47 -0400 2010: > Well, the reason that value is 200 million is for pg_clog cleanup, not > for xid wraparound protection. The next sentence does relate to xid > wraparound, but it seems to fit because the previous sentence ends with > xid wraparound: > > Note that the system will launch autovacuum processes to > prevent wraparound even when autovacuum is otherwise disabled. > > If we were worried about just xid wraparound I assume the value would be > 2 billion. > > Do you have a suggestion? Reorder the items?
I'd add another para before that one saying that this value "also" affects pg_clog truncation. I agree that putting pg_clog truncation as the first item here is not an improvement. For most people, having those pg_clog files there or not is going to be a wash, compared to data size. -- Álvaro Herrera <alvhe...@commandprompt.com> The PostgreSQL Company - Command Prompt, Inc. PostgreSQL Replication, Consulting, Custom Development, 24x7 support -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
