Doc: update VACUUM VERBOSE freezing tip.

VACUUM VERBOSE/autovacuuming logging have reported on the number of
pages frozen by VACUUM since commit d977ffd9 added that capability.
This information is directly related to relfrozenxid advancement, so
update an older tip from the documentation about how relfrozenxid is
reported on by the same instrumentation code.  Now the tip directly
mentions newly frozen pages, too.

diff --git a/doc/src/sgml/maintenance.sgml b/doc/src/sgml/maintenance.sgml
index 687b168cc56eb4719f504d1f13a40f08a82f65d4..bc21de300671d26a1d6d33958f93d9a59a1ae7d9 100644 (file)
--- a/doc/src/sgml/maintenance.sgml
+++ b/doc/src/sgml/maintenance.sgml
@@ -643,8 +643,9 @@ SELECT datname, age(datfrozenxid) FROM pg_database;
      parameter is specified, VACUUM prints various
      statistics about the table.  This includes information about how
      relfrozenxid and
-     relminmxid advanced.  The same details appear
-     in the server log when autovacuum logging (controlled by 
+     relminmxid advanced, and the number of
+     newly frozen pages.  The same details appear in the server log when
+     autovacuum logging (controlled by 
       linkend="guc-log-autovacuum-min-duration"/>) reports on a
      VACUUM operation executed by autovacuum.